允許BGP傳輸第2層MAC和第3層IP資訊的擴展是EVPN，它使用多協定邊界網關協定(MP-BGP)作為協定來分發有關VXLAN重疊網路的可達性資訊。
Catalyst 9000交換機上的EVPN VxLAN TRM故障排除
目錄
簡介
本檔案介紹如何透過EVPN VxLAN對TRM（租戶路由多點傳送）進行疑難排解。
必要條件
- 建議您熟悉單播EVPN VxLAN功能、BGP和MVPN（組播虛擬專用網路）。
- 此外，您必須瞭解組播的操作方式和組播概念
需求
本指南假設BGP、NVE對等體已經正確。如果基本EVPN VxLAN啟動有問題（單播ping失敗、BGP、NVE對等點關閉等），請根據需要參考BGP、EVPN、路由/交換機故障排除指南。
每個代碼版本中的功能可用性
| 版本 | 功能 |
| 17.1.1 | 含任播RP的TRMv4 |
| 17.3.1 | 帶有外部RP或單個RP的TRMv4 |
| 17.3.1 |
採用任播RP的TRMv6 |
| 17.3.1 |
帶有外部RP或單個RP的TRMv6 |
| 17.3.1 | 交換矩陣端具有單個RP且具有MVPN互通性的TRMv4(profile11) |
| 17.6.2和17.7.1 | 採用任播RP、外部RP或單個RP的TRMv4資料模組 |
採用元件
本文中的資訊係根據以下軟體和硬體版本：
- C9300
- C9400
- C9500
- C9600
本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路運作中，請確保您瞭解任何指令可能造成的影響。
背景資訊
要配置EVPN TRM，請參閱：BGP EVPN VXLAN配置指南，Cisco IOS XE阿姆斯特丹版17.3.x
租戶路由多點傳送(TRM)是一種基於BGP-EVPN的解決方案，可在VxLAN光纖中在VTEP上連線的來源和接收器之間啟用多點傳送路由[RFC7432]。TRM依靠單播EVPN中存在的路由來發現組播源和組播RP。與NG-MVPN一樣，組播源和接收器資訊通過BGP協定在配置了BGP MVPN地址系列的VTEP之間傳播。沒有從TRM VTEP向VxLAN交換矩陣傳送PIM/IGMP資料包。
TRM解決的關鍵問題是位於不同VLAN但位於同一VRF中的多播傳送方和接收方能夠彼此通訊。若沒有TRM，則多點傳播流量會作為底層中相同BUM（廣播、單點傳播和多點傳播）基礎架構的一部分加以傳送，基礎架構可以是多點傳播樹或輸入複製。此基礎架構是根據VLAN構建的，因此，雖然同一VLAN上的組播源和接收器可以通訊，但位於不同VLAN中的組播源和接收器卻無法通訊。使用TRM時，組播將從BUM中移出，並在父VRF下匯聚在一起。因此，無論源或接收器所在的VLAN如何，組播通訊都完全啟用。
TRM在相同或不同子網內的本地或跨VTEP的傳送方和接收方之間提供多租戶感知組播轉發。請參閱指南 BGP EVPN VXLAN配置指南，Cisco IOS XE阿姆斯特丹17.3.x 瞭解更多詳情
如何在本指南中介紹自己：
- 本指南根據RP位置分為4種方案。
- 一個場景可以引用不在您所在部分中的CLI示例。例如，SSM案例2會引用案例1來瞭解如何讀取某些CLI。
- 只有案例1涵蓋IPv4和IPv6，因為這兩個地址系列的概念基本上是相同的。
- 這些方案中列出的要求假定源和接收器直接連線到VTEP(有關詳細資訊，請參閱相關資訊部分「交換矩陣外部的源和接收器」)。
| 案例 |
IPv4/v6 |
每個中涵蓋的內容 |
| 所有其他方案的常見詳細資訊 |
IPv4 |
始終需要：MVPN底層和NVE運行正常，RPF檢查到任何TRM源都是L3VNI。 |
| AnyCast RP（每個VTEP都是具有通用RP IP的RP） |
IPv4/v6 |
IPv4/v6的BGP、PIM、IGMP、MFIB和FED命令以及捕獲示例均詳細介紹 |
| 無RP（SSM重疊） |
IPv4 |
SSM特定資訊。（有關常見資訊，請參閱場景1） |
| 交換矩陣內部的RP（交換矩陣的一個通用RP） |
IPv4 |
IPv4的BGP、PIM、IGMP、MFIB和FED命令有詳盡的描述 |
| 交換矩陣外部的RP（RP不在交換矩陣中） |
IPv4 |
IP到交換矩陣邊界特定資訊。（請參閱場景3瞭解常見資訊） |
| 具有對稱L2VNI的交換矩陣內部的RP（交換矩陣的一個通用RP） |
IPv4 |
當VNI同時位於傳送者和接收者VTEP上時，在光纖中使用單個RP的警告。（有關常見資訊，請參閱場景3） |
在本疑難排解檔中，show指令輸出的某些行末尾已加入評語。這樣做是為了突出或解釋該輸出行的某一特定方面。如果註釋以新行開始，則它引用註釋前面的輸出行。整個文檔都使用此記法來突出顯示show命令輸出中的註釋：
<-— Text highlighted in this format inside a command's output represents a comment.
This is done for explanation purpose only and is not part of the command's output.
技術
| EVPN |
乙太網路虛擬私人網路 |
|
| VXLAN |
虛擬可擴充LAN（區域網路） |
VXLAN的用途是克服VLAN和STP的固有限制。建議採用的IETF標準[RFC 7348]提供與VLAN相同的乙太網第2層網路服務，但具有更高的靈活性。功能上，它是UDP內MAC封裝協定，在第3層底層網路上作為虛擬重疊運行。 |
| VTEP |
虛擬通道端點 |
這是負責執行封裝和解除封裝的裝置 |
| NVE |
網路虛擬介面 |
進行封裝和解除封裝的邏輯介面 |
| VNI |
VXLAN網路識別碼 |
唯一標識每個第2層子網或網段。VNI有兩種型別： 對稱(L2VNI):VTEP具有相同VNI 非對稱(L3VNI):VTEP沒有相同的VNI，且透過單一通用VNI路由。 |
| MDT |
多點傳送發佈樹 |
在VTEP之間構建的組播樹，用於租戶組播流量的封裝和通道化。 |
| BUM |
廣播、未知單播、組播 |
在NVE設定下，BUM流量會透過連結到VNI的Mcast群組傳送。 |
| RP |
集結點 |
裝置在PIM稀疏模式下執行的角色。組播源和接收器的公共會議點。 |
| AnyCast(RP) |
AnyCast集結點 |
兩個或多個RP在環回介面上配置了相同的IP地址。FHR根據單播路由註冊到最近的RP。 |
| RPT（樹） |
根路徑樹 |
也稱為共用或*,G樹。此路徑指向RP |
| SPT（樹） |
最短路徑樹狀結構 |
到達源的最短路徑，由單播路由表確定 |
| FHR |
第一跳路由器 |
直接連線到源的裝置（ARP相鄰）。FHR向RP註冊源資訊。 |
| LHR |
上一跳路由器 |
連線接收器的裝置 |
| RPF |
反向路徑轉送 |
返回到源的單點傳播路徑。 傳入組播資料包不會被接受/轉發，除非它們被接收到與單播路由表相同的路徑。（排除「ip multicast multipath」使用案例）。 |
| MRIB |
多點傳送路由資訊庫 |
軟體組播路由表，也稱為mroute表 |
| MFIB |
組播轉發資訊庫 |
多點傳送等價物CEF。由MRIB的更新填充，並用於由資料平面轉發。 |
| FED |
轉發引擎驅動程式 |
對裝置硬體進行程式設計的元件。 |
| IIF |
傳入介面 |
啟用PIM的介面，也是返回源的單播RPF上游路徑。 （在show ip mroute中顯示） |
| OIF |
傳出介面 |
支援PIM的介面，該介面位於通向接收器的下游。（在show ip mroute中顯示） |
驗證
所有方案通用的驗證
第一節 介紹任一方案所需的基本要求。
- 確保所需的NVE對等點已啟動
- 確保租戶VRF中源的RPF介面是L3VNI SVI。如果RPF介面不是L3VNI SVI，則BGP不會傳送型別7加入路由。在任何情況下，RPF介面都必須指向此介面。
- 確保對等體之間的底層路徑（MDT隧道）已完成。
- 確保BGP用於組播控制平面（使用MVPN與PIM）
驗證NVE對等
對於本指南中的任何方案，檢查以確保NVE對等體在VTEP之間運行
- NVE對等點由從BGP學習的地址形成。
Leaf-01#sh nve peers
Interface VNI Type Peer-IP RMAC/Num_RTs eVNI state flags UP time
nve1 50901 L3CP 172.16.254.4 7c21.0dbd.9548 50901 UP A/-/4 01:54:11 <-- IPv4 peering with Leaf 02
nve1 50901 L3CP 172.16.254.4 7c21.0dbd.9548 50901 UP A/M/6 17:48:36 <-- IPv6 peering with Leaf 02
Leaf-02#sh nve peers
Interface VNI Type Peer-IP RMAC/Num_RTs eVNI state flags UP time
nve1 50901 L3CP 172.16.254.3 10b3.d56a.8fc8 50901 UP A/-/4 01:55:44 <-- IPv4 peering with Leaf 01
nve1 50901 L3CP 172.16.254.3 10b3.d56a.8fc8 50901 UP A/M/6 17:56:19 <-- IPv6 peering with Leaf 01
驗證租戶VRF中的RPF介面
如果此介面是除L3VNI SVI之外的任何介面，則BGP不會發起MVPN Type-7連線。
- 如果您沒有看到此介面，請確認配置不存在問題，該配置會使返回源的路由成為非L3VNI的介面。
Leaf-03#sh ip rpf vrf green 10.1.101.11 <-- Multicast source IP
RPF information for ? (10.1.101.11)
RPF interface: Vlan901 <-- RPF interface is the L3VNI SVI
RPF neighbor: ? (172.16.254.3) <-- Underlay Next hop IP
RPF route/mask: 10.1.101.0/24 <-- Network prefix for the Source
RPF type: unicast (bgp 65001)
Doing distance-preferred lookups across tables
RPF topology: ipv4 multicast base, originated from ipv4 unicast base
驗證多點傳送控制平面是否使用BGP
- mdt overlay use-bgp：通知裝置使用BGP MVPN型別5/6/7作為訊號協定（相對於PIM消息）
- spt-only：其他關鍵字通知裝置僅在AnyCast RP場景中使用SPT樹。由於每個VTEP都是RP，因此未使用MVPN第6類路由。
Leaf-01
!
vrf definition green
rd 1:1
!
address-family ipv4
mdt auto-discovery vxlan
mdt default vxlan 239.1.1.1 <-- Defines MDT default underlay group address
mdt overlay use-bgp [spt-only] <-- Required for VTEP to use MVPN Type 5/6/7 versus PIM for multicast control plane. (spt-only used for Anycast RP scenario)
驗證MDT組
MDT組對於所有方案都是通用的，因為這是將TRM組封裝到的外部隧道組。
請檢查MDT組是否已在源端正確程式設計
- MDT組的傳入介面是源端環回
- MDT組的傳出介面是底層介面
驗證Leaf-01:MRIB/MFIB中的MDT mroute是否正確
Leaf-01#sh ip mroute 239.1.1.1 172.16.254.3
(172.16.254.3, 239.1.1.1), 00:46:35/00:02:05, flags: FTx
Incoming interface: Loopback1, RPF nbr 0.0.0.0 <-- IIF is local loopback with 0.0.0.0 RPF indicating local
Outgoing interface list:
GigabitEthernet1/0/2, Forward/Sparse, 00:46:35/00:03:12 <-- OIF is the underlay uplink
Leaf-01#sh ip mfib 239.1.1.1 172.16.254.3
(172.16.254.3,239.1.1.1) Flags: HW
SW Forwarding: 2/0/150/0, Other: 1/1/0
HW Forwarding: 1458/0/156/0, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
Null0 Flags: A NS <--- Null0 (originated locally)
GigabitEthernet1/0/2 Flags: F NS <-- OIF is into the Underlay (Global route table)
Pkts: 0/0/1 Rate: 0 pps
驗證MDT組的Leaf-01:FED條目
Leaf-01#sh platform software fed switch active ip mfib 239.1.1.1/32 172.16.254.3 detail <-- the detail option gives summary of the HW indexes
MROUTE ENTRY vrf 0 (172.16.254.3, 239.1.1.1/32) <-- vrf 0 = global for this MDT S,G pair
HW Handle: 139738317079128 Flags:
RPF interface: Null0(1)): <-- Leaf-01 the Source (Null0)
HW Handle:139738317079128 Flags:A
Number of OIF: 2
Flags: 0x4 Pkts : 71 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
OIF Details:
Null0 A <-- The incoming interface is Local Loopback1 and A-Accept flag set
GigabitEthernet1/0/2 F NS <-- The Underlay Outgoing Interface and F-Forward flag set
Htm: 0x7f175cc0beb8 Si: 0x7f175cc0a6b8 Di: 0x7f175cc09df8 Rep_ri: 0x7f175cc0a1d8 <-- The DI (dest index) handle
DI details
----------
Handle:0x7f175cc09df8 Res-Type:ASIC_RSC_DI Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV4 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x538d mtu_index/l3u_ri_index0:0x0 index1:0x538d mtu_index/l3u_ri_index1:0x0
Brief Resource Information (ASIC_INSTANCE# 1)
----------------------------------------
Destination index = 0x538d
pmap = 0x00000000 0x00000002
pmap_intf : [GigabitEthernet1/0/2] <-- FED has the correct programming for the OIF
==============================================================
檢查MDT組是否已在接收器端正確程式設計
- MDT組的傳入介面是返回源端環回的RPF介面
- MDT組的傳出介面是Encap/Decap隧道介面
驗證Leaf-02:MRIB/MFIB中的MDT mroute正確
Leaf-02#sh ip mroute 172.16.254.3 239.1.1.1 <-- This is the Global MDT group
(172.16.254.3, 239.1.1.1), 00:23:35/00:01:09, flags: JTx <-- Source is Leaf-01 Lo1 IP
Incoming interface: GigabitEthernet1/0/2, RPF nbr 172.16.24.2
Outgoing interface list:
Tunnel0, Forward/Sparse, 00:23:35/00:00:24 <-- Decap Tunnel
Leaf-02#sh ip mfib 239.1.1.1 172.16.254.3
Default <-- Global routing table
(172.16.254.3,239.1.1.1) Flags: HW
SW Forwarding: 1/0/150/0, Other: 0/0/0
HW Forwarding: 5537/0/168/0, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
GigabitEthernet1/0/2 Flags: A <-- Accept via Underlay (Global) interface
Tunnel0, VXLAN Decap Flags: F NS <-- Forward to VxLAN decap Tunnel
Pkts: 0/0/1 Rate: 0 pps
驗證MDT組的Leaf-02:FED條目
Leaf-02#sh platform software fed switch active ip mfib 239.1.1.1/32 172.16.254.3 detail
MROUTE ENTRY vrf 0 (172.16.254.3, 239.1.1.1/32) <-- vrf 0 = global for this MDT S,G pair
HW Handle: 140397391831832 Flags:
RPF interface: GigabitEthernet1/0/2(57)): <-- RPF interface to 172.16.254.3
HW Handle:140397391831832 Flags:A
Number of OIF: 2
Flags: 0x4 Pkts : 1585 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
OIF Details:
Tunnel0 F NS <-- Send to decap tunnel to remove VxLAN header
(Adj: 0x73 ) <-- Tunnel0 Adjacency
GigabitEthernet1/0/2 A <-- Accept MDT packets from this interface
Htm: 0x7fb0d0f1f388 Si: 0x7fb0d0f1dc08 Di: 0x7fb0d0ed0438 Rep_ri: 0x7fb0d0ed07a8
RI details <-- Rewrite Index is used for VxLAN decapsulation
----------
Handle:0x7fb0d0ed07a8 Res-Type:ASIC_RSC_RI_REP Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV4 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x38 mtu_index/l3u_ri_index0:0x0 index1:0x38 mtu_index/l3u_ri_index1:0x0
Brief Resource Information (ASIC_INSTANCE# 0)
----------------------------------------
ASIC# 0
Replication list :
------------------
Total #ri : 6
Start_ri : 56
Common_ret : 0
Replication entry rep_ri 0x38 #elem = 1
0) ri[0]=0xE803 Dynamic port=88ri_ref_count:1 dirty=0
Leaf-02#sh platform hardware fed sw active fwd-asic resource asic all rewrite-index range 0xE803 0xE803
ASIC#:0 RI:59395 Rewrite_type:AL_RRM_REWRITE_L2_PAYLOAD_IPV4_EVPN_DECAP(118) Mapped_rii:LVX_EVPN_DECAP(246)
<...snip...>
案例 1.AnyCast RP（僅限SPT的樹）IPv4和IPv6
在此模式下，每個VTEP上都有一個RP。這些VTEP不會通過MSDP同步已識別的源，並且沒有共用樹。相反，MDT模式使用BGP資訊只建立SPT組播樹。 此模式可互換稱為僅SPT模式或分散式任意播RP模式。在此模式下，每個VTEP都是PIM RP。因此，每個站點的(*,G)樹在本地VTEP本身處被截斷。無需在交換矩陣上傳送(*,G)連線或MVPN RT-6。
網路圖表
對於此模式，請考慮以下3種BGP路由型別：
- EVPN路由型別2。這允許需要構建C組播路由（MVPN型別6/7）的其他PE返回原始PE，以附加適當的C組播匯入RT，以便發起者PE可以匯入C組播路由(RFC 6514 11.1.3)[RFC6514]。 此VRI的使用取決於命令「mdt overlay use-bgp」 VRF命令。
- MVPN Route-type 5.這與MVPN中相同，並且是可用的組播源/組的通告
- MVPN Route-type 7.來自IGMP或MLD層以及來自EVPN型別2的資訊用於建立此BGP型別聯接。Type-7驅動在Source端建立MRIB OIF。
EVPN第2類要求：
- 直連組播源已聯機。
- FHR（來源VTEP）驗證ARP（或ND）和CEF鄰接關係（確認來源為直接連線）。
- FHR發起EVPN第2型BGP更新
MVPN第5類要求：
- 源直接連線的要求已解決
- RP是本地的，因此FHR向自身註冊
- FHR發起MVPN第5類BGP更新
MVPN第7類要求：
- 存在EVPN型別2條目（使用正確的VRI構建C-Multicast路由型別7時需要該條目，並且是從源VTEP傳送的）
- 存在MVPN第5類條目（解析可用於SPT加入的源/組對時需要該條目）
- LHR VTEP已接收並處理IGMP或MLD成員身份報告
- LHR VTEP RPF介面是交換矩陣L3VNI介面
驗證BGP EVPN和MVPN路由
驗證Leaf-01:已建立EVPN型別2
### IPv4 ###
Leaf-01#sh bgp l2vpn evpn all route-type 2 0 F4CFE24334C5 10.1.101.11
...or you can also use:
Leaf-01#sh bgp l2vpn evpn detail [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24
BGP routing table entry for [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24, version 6
Paths: (1 available, best #1, table evi_101)
Advertised to update-groups:
1
Refresh Epoch 1
Local
:: (via default) from 0.0.0.0 (172.16.255.3) <-- Leaf-01 locally created
Origin incomplete, localpref 100, weight 32768, valid, sourced, local, best
EVPN ESI: 00000000000000000000, Label1 10101, Label2 50901
Extended Community: RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8 <-- MVPN VRI RT is part of the EVPN Type-2
Local irb vxlan vtep:
vrf:green, l3-vni:50901 <-- Vrf and VxLAN tag
local router mac:10B3.D56A.8FC8
core-irb interface:Vlan901 <-- L3VNI SVI
vtep-ip:172.16.254.3 <-- Leaf-01 VTEP
rx pathid: 0, tx pathid: 0x0
Updated on Dec 16 2020 17:40:29 UTC
### IPv6 ###
Leaf-01#sh bgp l2vpn evpn all route-type 2 0 F4CFE24334C1 FC00:1:101::11
...or you can also use:
Leaf-01#sh bgp l2vpn evpn detail [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36
BGP routing table entry for [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36, version 6
Paths: (1 available, best #1, table evi_101)
Advertised to update-groups:
1
Refresh Epoch 1
Local
:: (via default) from 0.0.0.0 (172.16.255.3) <-- Leaf-01 locally created
Origin incomplete, localpref 100, weight 32768, valid, sourced, local, best
EVPN ESI: 00000000000000000000, Label1 10101, Label2 50901
Extended Community: RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8 <-- MVPN VRI RT is part of the EVPN Type-2
Local irb vxlan vtep:
vrf:green, l3-vni:50901
local router mac:10B3.D56A.8FC8
core-irb interface:Vlan901 <-- L3VNI SVI
vtep-ip:172.16.254.3 <-- Leaf-01 VTEP
rx pathid: 0, tx pathid: 0x0
Updated on Mar 22 2021 19:54:18 UTC
檢驗Leaf-01:ARP/IPv6 ND和EVPN調試顯示ARP/ND已獲知，然後建立並傳送路由型別2
### IPv4 ###
Leaf-01#sh debugging
ARP:
ARP packet debugging is on
BGP L2VPN EVPN:
BGP updates debugging is on for address family: L2VPN E-VPN
BGP update events debugging is on for address family: L2VPN E-VPN
*Dec 17 17:00:06.480: IP ARP: rcvd rep src 10.1.101.11 f4cf.e243.34c5, dst 10.1.101.11 Vlan101 tableid 2 <-- Multicast Source ARP
*Dec 17 17:00:06.481: BGP: EVPN Rcvd pfx: [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24, net flags: 0 <-- BGP Triggered Type-2 creation
*Dec 17 17:00:06.481: TRM communities added to sourced RT2 <-- TRM extended VRI communities being injected into EVPN Type-2
*Dec 17 17:00:06.481: BGP(10): update modified for [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/30 <-- Modifying the update
*Dec 17 17:00:06.481: BGP(10): 172.16.255.1 NEXT_HOP set to vxlan local vtep-ip 172.16.254.3 for net [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24
*Dec 17 17:00:06.481: BGP(10): update modified for [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/30
*Dec 17 17:00:06.481: BGP(10): (base) 172.16.255.1 send UPDATE (format) [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/30, next 172.16.254.3, metric 0, path Local, extended community RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0 MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8
<--- Final update sent to RR with standard EVPN community info and required MVPN community attributes
### IPv6 ###
Leaf-01#debug ipv6 nd
ICMP Neighbor Discovery events debugging is on
ICMP ND HA events debugging is ON
IPv6 ND:
Mar 23 14:29:51.935: ICMPv6-ND: (Vlan101,FC00:1:101::11) Resolution request
Mar 23 14:29:51.935: ICMPv6-ND: (Vlan101,FC00:1:101::11) DELETE -> INCMP
Mar 23 14:29:51.935: ICMPv6-ND HA: in Update Neighbor Cache: old state 6 new state 0
Mar 23 14:29:51.935: ICMPv6-ND HA: add or delete entry not synced as no peer detected
Mar 23 14:29:51.936: ICMPv6-ND: (Vlan101,FC00:1:101::11) Sending NS
Mar 23 14:29:51.936: ICMPv6-ND: (Vlan101,FC00:1:101::11) Queued data for resolution
Mar 23 14:29:51.953: ICMPv6-ND: (Vlan101,FC00:1:101::11) Received NA from FC00:1:101::11
Mar 23 14:29:51.953: ICMPv6-ND: Validating ND packet options: valid
Mar 23 14:29:51.953: ICMPv6-ND: (Vlan101,FC00:1:101::11) LLA f4cf.e243.34c1
Mar 23 14:29:51.953: ICMPv6-ND HA: modify entry not synced as no peer detected
Mar 23 14:29:51.953: ICMPv6-ND: (Vlan101,FC00:1:101::11) INCMP -> REACH <-- peer is reachable
Leaf-01#debug bgp l2vpn evpn updates
Leaf-01#debug bgp l2vpn evpn updates events
BGP L2VPN EVPN:
Mar 23 14:11:56.462: BGP: EVPN Rcvd pfx: [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36, net flags: 0 <-- BGP Triggered Type-2 creation
Mar 23 14:11:57.462: TRM communities added to sourced RT2
ar 23 14:11:57.474: BGP(10): update modified for [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/42
Mar 23 14:11:57.474: BGP(10): 172.16.255.1 NEXT_HOP set to vxlan local vtep-ip 172.16.254.3 for net [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36
Mar 23 14:11:57.474: BGP(10): update modified for [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/42
Mar 23 14:11:57.474: BGP(10): (base) 172.16.255.1 send UPDATE (format) [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/42, next 172.16.254.3, metric 0, path Local, extended community RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0 MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8
<--- Final update sent to RR with standard EVPN community info and required MVPN community attributes
驗證在接收端的BGP中是否獲知Leaf-02：源端路由型別2
### IPv4 ###
Leaf-02#sh bgp l2vpn evpn all | b 10.1.101.11
* i [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24 <-- Remote VTEP route-type 2
172.16.254.3 0 100 0 ?
*>i 172.16.254.3 0 100 0 ? <-- IP of Leaf01 Lo1
Leaf-02#sh bgp l2vpn evpn route-type 2 0 F4CFE24334C5 10.1.101.11
...or you can also use:
Leaf-02#sh bgp l2vpn evpn detail [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24
BGP routing table entry for [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24, version 175
Paths: (2 available, best #2, table EVPN-BGP-Table) <-- In BGP EVPN table
Flag: 0x100
Not advertised to any peer
Refresh Epoch 2
Local
172.16.254.3 (metric 3) (via default) from 172.16.255.2 (172.16.255.2)
Origin incomplete, metric 0, localpref 100, valid, internal
EVPN ESI: 00000000000000000000, Label1 10101, Label2 50901
Extended Community: RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8
Originator: 172.16.255.3, Cluster list: 172.16.255.2
rx pathid: 0, tx pathid: 0
Updated on Dec 14 2020 19:58:57 UTC
MVPN AS:65001:0.0.0.0 <-- MVPN Autonomous System
MVPN VRF:172.16.255.3:2 <-- VRI Extended Community to be used in MVPN Type-7
Router MAC:10B3.D56A.8FC8 <-- Leaf-01 RMAC
Label2 50901 <-- L3VNI 50901
### IPv6 ###
Leaf-02#sh bgp l2vpn evpn all | b FC00:1:101::11
* i [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36
172.16.254.3 0 100 0 ?
*>i 172.16.254.3 0 100 0 ? <-- IP of Leaf01 Lo1
Leaf-02#sh bgp l2vpn evpn route-type 2 0 F4CFE24334C1 FC00:1:101::11
...or you can also use:
Leaf-02#sh bgp l2vpn evpn detail [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36
BGP routing table entry for [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36, version 659
Paths: (2 available, best #2, table EVPN-BGP-Table) <-- In BGP EVPN table
Flag: 0x100
Not advertised to any peer
Refresh Epoch 2
Local
172.16.254.3 (metric 3) (via default) from 172.16.255.2 (172.16.255.2)
Origin incomplete, metric 0, localpref 100, valid, internal
EVPN ESI: 00000000000000000000, Label1 10101, Label2 50901
Extended Community: RT:1:1 RT:65001:101 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.3:2 ENCAP:8 Router MAC:10B3.D56A.8FC8
Originator: 172.16.255.3, Cluster list: 172.16.255.2
rx pathid: 0, tx pathid: 0
Updated on Mar 23 2021 14:11:57 UTC
MVPN AS:65001:0.0.0.0 <-- MVPN Autonomous System
MVPN VRF:172.16.255.3:2 <-- VRI Extended Community to be used in MVPN Type-7
Router MAC:10B3.D56A.8FC8 <-- Leaf-01 RMAC
Label2 50901 <-- L3VNI 50901
驗證枝葉02：在接收器VTEP Leaf-02上的BGP中學習源路由型別5
### IPv4 ###
Leaf-02#sh bgp ipv4 mvpn all route-type 5 10.1.101.11 226.1.1.1
...or you can also use:
Leaf-02#sh bgp ipv4 mvpn detail [5][1:1][10.1.101.11][226.1.1.1]/18
BGP routing table entry for [5][1:1][10.1.101.11][226.1.1.1]/18, version 72 <-- Type-5 contains advertised S,G pair
Paths: (2 available, best #1, table MVPNv4-BGP-Table, not advertised to EBGP peer) <-- In BGP IPv4 MVPN table
Flag: 0x100
Not advertised to any peer
Refresh Epoch 1
Local
172.16.255.3 (metric 3) from 172.16.255.2 (172.16.255.2) <-- Loopback0 of Leaf-01
Origin incomplete, metric 0, localpref 100, valid, internal
Community: no-export
Extended Community: RT:1:1
Originator: 172.16.255.3, Cluster list: 172.16.255.2
rx pathid: 0, tx pathid: 0
Updated on Dec 15 2020 16:54:53 UTC
### IPv6 ###
Leaf-02#sh bgp ipv6 mvpn all route-type 5 FC00:1:101::11 FF06:1::1
...or you can also use:
Leaf-02#sh bgp ipv6 mvpn detail [5][1:1][FC00:1:101::11][FF06:1::1]/42
BGP routing table entry for [5][1:1][FC00:1:101::11][FF06:1::1]/42, version 11 <-- Type-5 contains advertised S,G pair
Paths: (2 available, best #1, table MVPNV6-BGP-Table, not advertised to EBGP peer) <-- In BGP IPv6 MVPN table
Flag: 0x100
Not advertised to any peer
Refresh Epoch 1
Local
172.16.255.3 (metric 3) from 172.16.255.2 (172.16.255.2) <-- Loopback0 of Leaf-01
Origin incomplete, metric 0, localpref 100, valid, internal
Community: no-export
Extended Community: RT:1:1
Originator: 172.16.255.3, Cluster list: 172.16.255.2
rx pathid: 0, tx pathid: 0
Updated on Mar 23 2021 15:13:06 UTC
驗證Leaf-02：是否需要來自Leaf-01的BGP資訊來建立型別7。最終要求是IGMP或MLD已處理成員身份報告，該報告通知VTEP有感興趣的接收者。
### IPv4 ###
Leaf-02#sh ip igmp snooping groups vlan 102
Vlan Group Type Version Port List
-----------------------------------------------------------------------
102 226.1.1.1 igmp v2 Gi1/0/10 <-- Receiver joined on Gi1/0/10
### IPv6 ###
Leaf-02#sh ipv6 mld vrf green groups detail
Interface: Vlan102 <-- Join on Vlan 102
Group: FF06:1::1 <-- Group joined
Uptime: 06:38:25
Router mode: EXCLUDE (Expires: 00:02:14)
Host mode: INCLUDE
Last reporter: FE80::46D3:CAFF:FE28:6CC1 <-- MLD join from Receiver link-local address
Source list is empty <-- ASM join, no sources listed
Leaf-02#sh ipv6 neighbors vrf green
IPv6 Address Age Link-layer Addr State Interface
FE80::46D3:CAFF:FE28:6CC1 0 44d3.ca28.6cc1 REACH Vl102 <-- Receiver IP & MAC
Leaf-02#sh ipv6 mld snooping address vlan 102 <-- If MLD snooping is on, it can be checked as well
Vlan Group Type Version Port List
-----------------------------------------------------------------------
102 FF06:1::1 mld v2 Gi1/0/10 <-- Receiver joined on Gi1/0/10
驗證Leaf-02: MVPN Debugs show Route-type 7是在IGMP/MLD成員身份報告到達且所需的EVPN Type-2和Type-5已安裝時建立的。
### IPv4 ###
Leaf-02#debug bgp ipv4 mvpn updates
Leaf-02#debug bgp ipv4 mvpn updates events
*Dec 14 19:41:57.645: BGP[15] MVPN: add c-route, type 7, bs len 0 asn=0, rd=1:1,
*Dec 14 19:41:57.645: source=10.1.101.11/4,
*Dec 14 19:41:57.645: group=226.1.1.1/4,
*Dec 14 19:41:57.645: nexthop=172.16.254.3, <-- Source is via Leaf-01 IP
*Dec 14 19:41:57.645: len left = 0
*Dec 14 19:41:57.645: BGP[14] MVPN umh lookup: vrfid 2, source 10.1.101.11
*Dec 14 19:41:57.645: BGP[4] MVPN umh lookup: vrfid 2, source 10.1.101.11, net 1:1:10.1.101.11/32, 1:1:10.1.101.11/32 with matching nexthop 172.16.254.3, remote-rd [172.16.]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.3:2,
*Dec 14 19:41:57.646: BGP: MVPN(15) create local route [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
*Dec 14 19:41:57.646: BGP[15] MVPN: add c-route, type 7, bs len 0 asn=65001, rd=1:1,
### IPv6 ###
Leaf-02#debug bgp ipv6 mvpn updates
Leaf-02#debug bgp ipv6 mvpn updates events
Mar 23 15:46:11.171: BGP[16] MVPN: add c-route, type 7, bs len 0 asn=0, rd=1:1,
Mar 23 15:46:11.171: source=FC00:1:101::11/16,
Mar 23 15:46:11.171: group=FF06:1::1/16,
Mar 23 15:46:11.171: nexthop=::FFFF:172.16.254.3, <-- IPv4 next hop of Leaf-01
Mar 23 15:46:11.171: len left = 0
Mar 23 15:46:11.171: BGP[19] MVPN umh lookup: vrfid 2, source FC00:1:101::11
Mar 23 15:46:11.171: BGP[5] MVPN umh lookup: vrfid 2, source FC00:1:101::11, net [1:1]FC00:1:101::11/128, [1:1]FC00:1:101::11/128 with matching nexthop ::FFFF:172.16.254.3, remote-rd [172.16.]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.3:2,
Mar 23 15:46:11.172: BGP: MVPN(16) create local route [7][172.16.254.3:101][65001][FC00:1:101::11][FF06:1::1]/46
Mar 23 15:46:11.172: BGP[16] MVPN: add c-route, type 7, bs len 0 asn=65001, rd=1:1,
驗證Leaf-01:從Leaf-02接收的MVPN型別7
### IPv4 ###
Leaf-01#sh bgp ipv4 mvpn all route-type 7 172.16.254.3:101 65001 10.1.101.11 226.1.1.1
...or you can also use:
Leaf-01#sh bgp ipv4 mvpn detail [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
BGP routing table entry for [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22, version 76
Paths: (2 available, best #1, table MVPNv4-BGP-Table) <-- In BGP IPv4 MVPN table
Not advertised to any peer
Refresh Epoch 1
Local
172.16.255.4 (metric 3) from 172.16.255.2 (172.16.255.2) <-- loopback of Leaf-02 Receiver VTEP
Origin incomplete, metric 0, localpref 100, valid, internal
Extended Community: RT:172.16.255.3:2 <-- The VRI derived from EVPN Type-2 and added to the MVPN Type-7
Originator: 172.16.255.4, Cluster list: 172.16.255.2
rx pathid: 0, tx pathid: 0
Updated on Dec 15 2020 14:14:38 UTC
### IPv6 ###
Leaf-01#sh bgp ipv6 mvpn all route-type 7 172.16.254.3:101 65001 FC00:1:101::11 FF06:1::1
...or you can also use:
Leaf-01#sh bgp ipv6 mvpn detail [7][172.16.254.3:101][65001][FC00:1:101::11][FF06:1::1]/46
BGP routing table entry for [7][172.16.254.3:101][65001][FC00:1:101::11][FF06:1::1]/46, version 45
Paths: (2 available, best #1, table MVPNV6-BGP-Table) <-- In BGP IPv6 MVPN table
Not advertised to any peer
Refresh Epoch 1
Local
172.16.255.4 (metric 3) from 172.16.255.1 (172.16.255.1) <-- loopback of Leaf-02 Receiver VTEP
Origin incomplete, metric 0, localpref 100, valid, internal, best
Extended Community: RT:172.16.255.3:2 <-- The VRI derived from EVPN Type-2 and added to the MVPN Type-7
Originator: 172.16.255.4, Cluster list: 172.16.255.1
rx pathid: 0, tx pathid: 0x0
Updated on Mar 23 2021 15:46:11 UTC
驗證Leaf-01: MVPN調試顯示使用MVPN VRI路由目標接收的路由型別7
*Dec 17 16:16:31.923: BGP(15): 172.16.255.2 rcvd UPDATE w/ attr: nexthop 172.16.255.4, origin ?, localpref 100, metric 0, originator 172.16.255.4, clusterlist 172.16.255.2, extended community RT:172.16.255.3:2 <-- VRI RT
*Dec 17 16:16:31.923: BGP(15): 172.16.255.2 rcvd [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Received MVPN Type-7
<...only update from Spine-02 172.16.255.2 ...>
*Dec 17 16:16:31.923: BGP(15): skip vrf default table RIB route [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
*Dec 17 16:16:31.924: BGP(15): add RIB route (0:0)[7][1:1][65001][10.1.101.11/32][226.1.1.1/32]/22
(Skipping IPv6, see the debugs demonstrated in previous steps)
驗證Leaf-02：完整BGP表包含Leaf-01 EVPN型別2和MVPN型別5，以及由接收方Leaf-02生成的型別7
### IPv4 ###
Leaf-02#sh bgp l2vpn evpn all | b 10.1.101.11
* i [2][172.16.254.3:101][0][48][F4CFE24334C5][32][10.1.101.11]/24 <-- Remote VTEP route-type 2
172.16.254.3 0 100 0 ?
*>i 172.16.254.3 0 100 0 ? <-- IP of Leaf01 Lo1
Leaf-02#sh bgp ipv4 mvpn all
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green) <-- default RD for vrf green
*>i [5][1:1][10.1.101.11][226.1.1.1]/18 <-- Type-5, source & group
172.16.255.3 0 100 0 ? <-- Next hop Leaf-01 IP
* i 172.16.255.3 0 100 0 ?
Route Distinguisher: 172.16.254.3:101 <-- MVPN RD sent from Source Leaf-01
*> [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Type-7 BGP Join Entry
0.0.0.0 32768 ? <-- Locally created (0.0.0.0) by Leaf-02
### IPv6 ###
Leaf-02#sh bgp l2vpn evpn all | b FC00:1:101::11
* i [2][172.16.254.3:101][0][48][F4CFE24334C1][128][FC00:1:101::11]/36 <-- Remote VTEP route-type 2
172.16.254.3 0 100 0 ?
*>i 172.16.254.3 0 100 0 ? <-- IP of Leaf-01 Lo1
Leaf-02#sh bgp ipv6 mvpn all
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green) <-- default RD for vrf green
*>i [5][1:1][FC00:1:101::11][FF06:1::1]/42 <-- Type-5, source & group
172.16.255.3 0 100 0 ? <-- IPv4 Next hop Leaf-01 IP
* i 172.16.255.3 0 100 0 ?
Route Distinguisher: 172.16.254.3:101 <-- MVPN RD sent from Source Leaf-01
*> [7][172.16.254.3:101][65001][FC00:1:101::11][FF06:1::1]/46 <-- Type-7 BGP Join Entry
:: 32768 ? <-- Locally created (::) by Leaf-02
驗證TRM組枝葉–01(FHR)
檢查MDT和TRM組是否已在源端正確形成。
- TRM組的傳入介面是與客戶端VRF關聯的SVI
- TRM組的傳出介面是L3VNI SVI
驗證Leaf-01:TRM組MRIB/MFIB
### IPv4 ###
Leaf-01#sh ip mroute vrf green 226.1.1.1 10.1.101.11
(10.1.101.11, 226.1.1.1), 02:57:56/00:03:14, flags: FTGqx <-- Flags: BGP S-A Route
Incoming interface: Vlan101, RPF nbr 0.0.0.0 <-- Local to Vlan101 Direct connected source
Outgoing interface list:
Vlan901, Forward/Sparse, 02:57:56/stopped <-- OIF is VxLAN L3VNI
Leaf-01#sh ip mfib vrf green 226.1.1.1 10.1.101.11
VRF green <-- Tenant VRF
(10.1.101.11,226.1.1.1) Flags: HW
SW Forwarding: 1/0/100/0, Other: 0/0/0
HW Forwarding: 5166/0/118/0, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
Vlan101 Flags: A <-- Accept flag set on Connected Source SVI
Vlan102 Flags: F NS
Pkts: 0/0/1 Rate: 0 pps
Vlan901, VXLAN v4 Encap (50901, 239.1.1.1) Flags: F <-- Forward via Vlan 901. Use MDT group 239.1.1.1, vxlan tag 50901
Pkts: 0/0/0 Rate: 0 pps
### IPv6 ###
Leaf-01#sh ipv6 mroute vrf green
(FC00:1:101::11, FF06:1::1), 01:01:00/00:01:08, flags: SFTGq <-- Flags: q - BGP S-A Route, G - BGP Signal Received
Incoming interface: Vlan101
RPF nbr: FE80::F6CF:E2FF:FE43:34C1 <-- link local address of Source
Immediate Outgoing interface list:
Vlan901, Forward, 01:01:00/never <-- OIF is VxLAN L3VNI
Leaf-01#sh ipv6 mfib vrf green FF06:1::1
VRF green <-- Tenant VRF
(FC00:1:101::11,FF06:1::1) Flags: HW
SW Forwarding: 0/0/0/0, Other: 1/0/1
HW Forwarding: 1968/0/118/0, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
Vlan101 Flags: A NS <-- Accept flag set on Connected Source SVI
Vlan901, VXLAN v4 Encap (50901, 239.1.1.1) Flags: F <-- Forward via Vlan 901. Use MDT group 239.1.1.1, vxlan tag 50901
Pkts: 0/0/0 Rate: 0 pps
驗證Leaf-01:FED中的TRM組
### IPv4 ###
Leaf-01#sh platform software fed switch active ip mfib vrf green 226.1.1.1/32 10.1.101.11
Multicast (S,G) Information
VRF : 2 <-- VRF ID 2 = vrf green (from "show vrf detail")
Source Address : 10.1.101.11
HTM Handler : 0x7f175cc08578
SI Handler : 0x7f175cc06ea8
DI Handler : 0x7f175cc067c8
REP RI handler : 0x7f175cc06b38
Flags : {Svl}
Packet count : 39140 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
State : 4
RPF :
Vlan101 A <-- Accept on Vlan 101 in Tenant vrf green
OIF :
Vlan102 F NS
Vlan101 A
Vlan901 F {Remote} <-- Forward via L3VNI interface
(Adj: 0x6a ) <-- Adjacency for this entry
### IPv6 ###
Leaf-01#sh plat soft fed switch active ipv6 mfib vrf green FF06:1::1/128 FC00:1:101::11
Multicast (S,G) Information
VRF : 2 <-- VRF ID 2 = vrf green (from "show vrf detail")
Source Address : fc00:1:101::11
HTM Handler : 0x7fba88d911b8
SI Handler : 0x7fba88fc4348
DI Handler : 0x7fba88fc8dc8
REP RI handler : 0x7fba88fc8fd8
Flags : {Svl}
Packet count : 2113 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
State : 4
RPF :
Vlan101 A {Remote} <-- Accept on Vlan 101 in Tenant vrf green (says remote, but this is a local host)
OIF :
Vlan101 A {Remote}
Vlan901 F {Remote} <-- Forward via L3VNI interface
(Adj: 0x7c ) <-- Adjacency for this entry
驗證Leaf-01：鄰接是否正確
### IPv4 ###
Leaf-01#sh platform software fed switch active ip adj
IPV4 Adj entries
dest if_name dst_mac si_hdl ri_hdl pd_flags adj_id Last-modified
---- ------- ------- ------ ------ -------- ----- ------------------------
239.1.1.1 nve1.VNI50901 4500.0000.0000 0x7f175ccd8c38 0x7f175ccd8de8 0x60 0x6a 2020/12/16 17:39:55.747
*** Adjacency 0x6a details ***
Destination = the MDT tunnel multicast group 239.1.1.1
Interface = nve1.VNI50901 (the L3VNI 50901)
### IPv6 ###
Leaf-01#sh platform software fed switch active ipv6 adj
IPV6 Adj entries
dest if_name dst_mac si_hdl ri_hdl pd_flags adj_id Last-modified
---- ------- ------- ------ ------ -------- ------ -------------
239.1.1.1 nve1.VNI50901 4500.0000.0000 0x7fba88cf9fc8 0x7fba88cfa248 0x60 0x7c 2021/03/22 19:54:09.831
*** Adjacency 0x7c details ***
Destination = the MDT tunnel multicast group 239.1.1.1
Interface = nve1.VNI50901 (the L3VNI 50901)
驗證TRM組枝葉–02(LHR)
檢查MDT和TRM組是否已在接收器端正確形成。
- TRM組的傳入介面是與L3VNI關聯的SVI
- TRM組的傳出介面是處理IGMP加入的客戶端SVI。
驗證Leaf-02:MRIB/MFIB中的TRM（租戶組播路由）路由
Leaf-02#sh ip mroute vrf green 226.1.1.1 10.1.101.11 <-- The TRM Client group
(10.1.101.11, 226.1.1.1), 00:26:03/00:02:37, flags: TgQ
Incoming interface: Vlan901, RPF nbr 172.16.254.3 <-- Via L3VNI, RPF to Leaf-01
Outgoing interface list:
Vlan102, Forward/Sparse, 00:26:03/00:03:10 <-- Client Receiver Vlan
Leaf-02#sh ip mfib vrf green 226.1.1.1 10.1.101.11
VRF green <--- The Tenant VRF
(10.1.101.11,226.1.1.1) Flags: HW
SW Forwarding: 1/0/100/0, Other: 0/0/0
HW Forwarding: 39013/0/126/0, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
Vlan901, VXLAN Decap Flags: A <-- L3VNI Accept and decapsulate from VxLAN
Vlan102 Flags: F NS <-- Forward to the Tenant Vlan
Pkts: 0/0/1 Rate: 0 pps
驗證Leaf-02:FED中的TRM組
### IPv4 ###
Leaf-02#sh platform software fed switch active ip mfib vrf green 226.1.1.1/32 10.1.101.11 detail <-- Use detail option to resolve DI (Dest Index)
MROUTE ENTRY vrf 2 (10.1.101.11, 226.1.1.1/32)
HW Handle: 140397391947768 Flags: {Svl}
RPF interface: Vlan901(60)): SVI <-- RPF interface = L3VNI SVI Vlan901
HW Handle:140397391947768 Flags:A {Remote}
Number of OIF: 2
Flags: 0x4 Pkts : 39387 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
OIF Details:
Vlan102 F NS <-- Client Vlan
Vlan901 A {Remote} <-- Accept interface is RPF to source via Remote EVPN next hop
(Adj: 0xf80003c1 ) <-- Adj for vlan 901(show plat soft fed sw active ipv4 adj)
Htm: 0x7fb0d0edfb48 Si: 0x7fb0d0ee9158 Di: 0x7fb0d0eca8f8 Rep_ri: 0x7fb0d0ef2b98
DI details <-- Dest index (egress interface) details
----------
Handle:0x7fb0d0eca8f8 Res-Type:ASIC_RSC_DI Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV4 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x538b mtu_index/l3u_ri_index0:0x0 index1:0x538b mtu_index/l3u_ri_index1:0x0
Brief Resource Information (ASIC_INSTANCE# 1) <-- Gi1/0/10 is mapped to instance 1
----------------------------------------
Destination index = 0x538b
pmap = 0x00000000 0x00000200
pmap_intf : [GigabitEthernet1/0/10] <-- Maps to Gi1/0/10, the port toward the client
==============================================================
### IPv6 ###
Leaf-02#sh platform software fed switch active ipv6 mfib vrf green FF06:1::1/128 FC00:1:101::11 detail
MROUTE ENTRY vrf 2 (fc00:1:101::11, ff06:1::1/128)
HW Handle: 139852137577736 Flags: {Svl}
RPF interface: Vlan901(62)): SVI <-- RPF to Source L3VNI SVI 901
HW Handle:139852137577736 Flags:A {Remote}
Number of OIF: 2
Flags: 0x4 Pkts : 7445 <-- Packets use this Entry
OIF Details:
Vlan102 F NS <-- F - Forward. The OIF Vlan SVI 901
Vlan901 A {Remote}
(Adj: 0xf80003e2 ) <-- Adj for vlan 901 (show plat soft fed sw active ipv6 adj)
Htm: 0x7f31dcfee238 Si: 0x7f31dcfba5d8 Di: 0x7f31dcfc2358 Rep_ri: 0x7f31dcfcb1a8
DI details
----------
Handle:0x7f31dcfc2358 Res-Type:ASIC_RSC_DI Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV6 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x5381 mtu_index/l3u_ri_index0:0x0 index1:0x5381 mtu_index/l3u_ri_index1:0x0
Brief Resource Information (ASIC_INSTANCE# 1) <-- Gig1/0/10 is mapped to Instance 1
----------------------------------------
Destination index = 0x5381
pmap = 0x00000000 0x00000200
pmap_intf : [GigabitEthernet1/0/10] <-- Maps to Gig1/0/10, the port toward the client
==============================================================
Leaf-02#sh platform software fed switch active ifm mappings
Interface IF_ID Inst Asic Core Port SubPort Mac Cntx LPN GPN Type Active
GigabitEthernet1/0/10 0x12 1 0 1 9 0 5 15 10 10 NIF Y <-- Instance 1 of ASIC 0
驗證Leaf-02：捕獲的資料包顯示具有內部客戶端流量的外部MDT隧道組
Leaf-02#sh mon ca 1 parameter
monitor capture 1 interface GigabitEthernet1/0/2 IN
monitor capture 1 match any
monitor capture 1 buffer size 10
monitor capture 1 limit pps 1000
### IPv4 ###
Leaf-02#sh mon capture 1 buffer detailed
Ethernet II, Src: 7c:21:0d:bd:2c:d6 (7c:21:0d:bd:2c:d6), Dst: 01:00:5e:01:01:01 (01:00:5e:01:01:01) <-- MAC is matching 239.1.1.1
Type: IPv4 (0x0800) <-- IPv4 outer packet
Internet Protocol Version 4, Src: 172.16.254.3, Dst: 239.1.1.1 <- Leaf-01 Source IP and MDT outer tunnel Group
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Time to live: 253
User Datagram Protocol, Src Port: 65287, Dst Port: 4789 <-- VxLAN UDP port 4789
Virtual eXtensible Local Area Network
Flags: 0x0800, VXLAN Network ID (VNI)
Group Policy ID: 0
VXLAN Network Identifier (VNI): 50901 <-- L3VNI value
Type: IPv4 (0x0800) <-- IPv4 inner packet
Internet Protocol Version 4, Src: 10.1.101.11, Dst: 226.1.1.1 <-- Encapsulated IPv4 TRM group
0100 .... = Version: 4
Time to live: 254
Protocol: ICMP (1)
(multiple lines removed from this example capture)
### IPv6 ###
Leaf-02#sh mon capture 1 buffer detailed
Ethernet II, Src: 7c:21:0d:bd:2c:d6 (7c:21:0d:bd:2c:d6), Dst: 01:00:5e:01:01:01 (01:00:5e:01:01:01) <-- DMAC is matching 239.1.1.1
Type: IPv4 (0x0800) <-- IPv4 outer packet
Internet Protocol Version 4, Src: 172.16.254.3, Dst: 239.1.1.1
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
0000 00.. = Differentiated Services Codepoint: Default (0)
.... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
Total Length: 150
Identification: 0x4e4b (20043)
Flags: 0x4000, Don't fragment
0... .... .... .... = Reserved bit: Not set
.1.. .... .... .... = Don't fragment: Set <-- DF flag=1. MTU can be an issue if too low in path
..0. .... .... .... = More fragments: Not set
...0 0000 0000 0000 = Fragment offset: 0
Time to live: 253
Protocol: UDP (17)
Header checksum: 0x94f4 [validation disabled]
[Header checksum status: Unverified]
Source: 172.16.254.3
Destination: 239.1.1.1
User Datagram Protocol, Src Port: 65418, Dst Port: 4789 <-- VxLAN UDP port 4789
Source Port: 65418
Destination Port: 4789
<...snip...>
Virtual eXtensible Local Area Network
Flags: 0x0800, VXLAN Network ID (VNI)
0... .... .... .... = GBP Extension: Not defined
.... .... .0.. .... = Don't Learn: False
.... 1... .... .... = VXLAN Network ID (VNI): True
.... .... .... 0... = Policy Applied: False
.000 .000 0.00 .000 = Reserved(R): 0x0000
Group Policy ID: 0
VXLAN Network Identifier (VNI): 50901 <-- L3VNID 50901
Reserved: 0
Ethernet II, Src: 10:b3:d5:6a:00:00 (10:b3:d5:6a:00:00), Dst: 33:33:00:00:00:01 (33:33:00:00:00:01) <-- DMAC matches ff06:1::1
Type: IPv6 (0x86dd) <-- IPv6 inner packet
Internet Protocol Version 6, Src: fc00:1:101::11, Dst: ff06:1::1 <-- Encapsulated IPv6 TRM group
0110 .... = Version: 6
<...snip...>
Source: fc00:1:101::11
Destination: ff06:1::1
Internet Control Message Protocol v6
Type: Echo (ping) request (128)
<...snip...>
場景2：交換矩陣中的PIM SSM
在此模式下，重疊中沒有RP，並且沒有使用MVPN型別5或型別7（底層繼續作為PIM ASM運行）。 在SSM中，接收方向LHR VTEP傳送並加入IGMPv3S、G。此VTEP對RIB中的源執行RPF查詢。如果找到L3VNI SVI作為RPF介面，LHR VTEP會將MVPN RT-7傳送到接收並安裝此路由的FHR VTEP。然後，FHR VTEP通知PIM新增L3VNI SVI作為S，G mroute的傳出介面。
本節顯示了與方案1的差異。同樣的步驟和方法只在場景1中註明。
- 請參閱案例1中BGP和PIM的驗證和調試步驟，因為BGP和PIM操作相同
網路圖表
對於此模式，請考慮以下BGP路由型別及其來源
建立者：源VTEP
- EVPN路由型別2.用於獲取源的單播和VRI資訊，並在VTEP加入STP樹時新增到C組播路由（MVPN型別7）。
建立者：接收方VTEP
- MVPN Route-type 7.來自IGMP或MLD層以及來自EVPN型別2的資訊用於建立此BGP型別聯接。Type-7驅動在Source端建立MRIB OIF。
EVPN第2類要求：
- FHR（來源VTEP）驗證ARP（或ND）和CEF鄰接關係（確認來源為直接連線）。
- FHR發起EVPN第2型BGP更新
MVPN第7類要求：
- 存在EVPN型別2條目（使用正確的VRI構建C-Multicast路由型別7時需要該條目，並且是從源VTEP傳送的）
- 接收方VTEP:IGMPv3源特定成員身份報告已由LHR VTEP接收並處理
- LHR VTEP RPF介面是交換矩陣L3VNI介面
對於此模式，在LHR VTEP上需要新增配置以啟用SSM範圍並處理IGMPv3成員身份報告
配置Leaf-03：在租戶SVI下將IGMP查詢器設定為版本3
interface Vlan102
vrf forwarding green
ip address 10.1.102.1 255.255.255.0
ip pim sparse-mode
ip igmp version 3 <-- Sets the version to V3
end
驗證Leaf-03:IGMP查詢器設定為版本3
Leaf-03#sh ip igmp snooping querier vlan 102
IP address : 10.1.102.1 <-- IP is that of the Vlan102 SVI
IGMP version : v3 <-- Querier is now version 3
Port : Router <-- Mrouter port is "Router" meaning querier is local to this VTEP
Max response time : 10s
Query interval : 60s
Robustness variable : 2
啟用Leaf-03:租戶VRF所需的SSM範圍
Leaf-03(config)#ip pim vrf green ssm ?
default Use 232/8 group range for SSM <-- Set to the normally defined SSM range
range ACL for group range to be used for SSM <-- use an ACL to define a non-default SSM range
驗證此方案所需的事件順序
第0步EVPN(Leaf-03)：驗證EVPN字首是否存在，BGP可以查詢在MVPN型別7中使用的VRI。
Leaf-03#sh bgp l2vpn evpn all
BGP table version is 16, local router ID is 172.16.255.6
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green)
* i [2][172.16.254.3:101][0][48][F4CFE24334C1][32][10.1.101.11]/24
172.16.254.3 0 100 0 ?
*>i 172.16.254.3 0 100 0 ? <-- From Leaf-01
Leaf-03#sh bgp l2vpn evpn all route-type 2 0 F4CFE24334C1 10.1.101.11 <-- Detailed view of the EVPN type-2 entry
BGP routing table entry for [2][172.16.254.3:101][0][48][F4CFE24334C1][32][10.1.101.11]/24, version 283
Paths: (2 available, best #2, table EVPN-BGP-Table)
Not advertised to any peer
Refresh Epoch 1
Local
172.16.254.3 (metric 3) (via default) from 172.16.255.1 (172.16.255.1)
Origin incomplete, metric 0, localpref 100, valid, internal, best
EVPN ESI: 00000000000000000000, Gateway Address: 0.0.0.0, VNI Label 50901, MPLS VPN Label 0
Extended Community: RT:1:1 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.3:4 ENCAP:8 Router MAC:10B3.D56A.8FC8 <-- BGP finds the VRI in this entry
Originator: 172.16.255.3, Cluster list: 172.16.255.1
rx pathid: 0, tx pathid: 0x0
Updated on May 6 2021 16:17:06 UTC
第1步（枝葉–03）：已接收並包含源的IGMPv3成員身份報告
Leaf-03#show ip igmp snooping groups vlan 102 226.1.1.1
Vlan Group Type Version Port List
-----------------------------------------------------------------------
102 226.1.1.1 igmp v3 Gi1/0/10
Leaf-03#show ip igmp snooping groups vlan 102 226.1.1.1 sources <-- Specify "sources" to see Source information
Vlan Group Type Version Port List
-----------------------------------------------------------------------
Source information for group 226.1.1.1:
Timers: Expired sources are deleted on next IGMP General Query
SourceIP Expires Uptime Inc Hosts Exc Hosts
-------------------------------------------------------
10.1.101.11 00:01:20 00:02:58 1 0 <-- Source specified in IGMP includes one source
第2步(Leaf-03):BGP收到此加入的通知，建立並傳送第7類MVPN加入。
debug mvpn
debug ip igmp vrf green 226.1.1.1
May 6 17:11:08.500: IGMP(6): Received v3 Report for 1 group on Vlan102 from 10.1.102.12
May 6 17:11:08.500: IGMP(6): Received Group record for group 226.1.1.1, mode 5 from 10.1.102.12 for 1 sources <-- IGMPv3 type join
May 6 17:11:08.500: IGMP(6): WAVL Insert group: 226.1.1.1 interface: Vlan102 Successful
May 6 17:11:08.500: IGMP(6): Create source 10.1.101.11
May 6 17:11:08.500: IGMP(6): Updating expiration time on (10.1.101.11,226.1.1.1) to 180 secs
May 6 17:11:08.500: IGMP(6): Setting source flags 4 on (10.1.101.11,226.1.1.1)
May 6 17:11:08.500: IGMP(6): MRT Add/Update Vlan102 for (10.1.101.11,226.1.1.1) by 0
May 6 17:11:08.501: MVPN: Received local route update for (10.1.101.11, 226.1.1.1) with RD: 1:1, Route Type: 7, flags: 0x00 <-- MVPN process gets updated
May 6 17:11:08.501: MVPN: Route Type 7 added [(10.1.101.11, 226.1.1.1)] rd:1:1 send:1
May 6 17:11:08.501: MVPN: Sending BGP prefix=[7:0 1:1 : (10.1.101.11,226.1.1.1)] len=23, nh 172.16.254.3, Originate route
May 6 17:11:08.501: MVPN: Originate C-route, BGP remote RD 1:1 <-- MVPN Sends the type-7 join to Source leaf
Leaf-03#sh bgp ipv4 mvpn all
BGP table version is 10, local router ID is 172.16.255.6
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green)
*> [7][1:1][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Locally created Type-7
0.0.0.0 32768 ?
Leaf-03#sh ip mroute vrf green 226.1.1.1 <-- for SSM you only see S,G and no *,G
IP Multicast Routing Table
<...snip...>
(10.1.101.11, 226.1.1.1), 00:29:12/00:02:46, flags: sTIg <-- s = SSM, I = Source Specific Join received, g = Sent BGP C-Mroute
Incoming interface: Vlan901, RPF nbr 172.16.254.3 <-- RPF interface is the L3VNI
Outgoing interface list:
Vlan102, Forward/Sparse, 00:29:12/00:02:46
第3步(Leaf-01):源枝葉接收並安裝MVPN Type-7加入路由，並通知PIM安裝L3VNI OIF
debug mvpn
debug ip pim vrf green 226.1.1.1
May 6 18:16:07.260: MVPN: Received BGP prefix=[7:65001 1:1 : (10.1.101.11,226.1.1.1)] len=23, nexthop: 172.16.255.6, router-id: 172.16.255.1, Accept route <-- Receive and accept type-7
May 6 18:16:07.260: MVPN: Received BGP route update for (10.1.101.11, 226.1.1.1) with RD: 1:1, Route Type: 7, flags: 0x01
May 6 18:16:07.260: MVPN: Route Type 7 added [(10.1.101.11, 226.1.1.1), nh 172.16.255.6] rd:1:1 send:0, to us <-- add type-7 route
May 6 18:16:07.260: PIM(4)[green]: Join-list: (10.1.101.11/32, 226.1.1.1), S-bit set, BGP C-Route
May 6 18:16:07.263: PIM(4)[green]: Add Vlan901/0.0.0.0 to (10.1.101.11, 226.1.1.1), Forward state, by BGP SG Join <-- PIM adds Vlan901 L3VNI ad OIF based on BGP join
May 6 18:16:07.264: PIM(4)[green]: Insert (10.1.101.11,226.1.1.1) join in nbr 10.1.101.11's queue
May 6 18:16:07.264: MVPN(green[AF_IPv4]): Add (10.1.101.11, 226.1.1.1) intf Vlan901 olist Join state for BGP C-Rt type 7 Accept <-- MVPN add Vlan901 OIF from type-7
Leaf-01#sh bgp ipv4 mvpn all
<...snip...>
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green)
*>i [7][1:1][65001][10.1.101.11/32][226.1.1.1/32]/22
172.16.255.6 0 100 0 ? <-- Recieved from Reciever Leaf-03
* i 172.16.255.6 0 100 0 ?
Leaf-01#sh ip mroute vrf green 226.1.1.1
<...snip...>
(10.1.101.11, 226.1.1.1), 00:42:41/stopped, flags: sTGx <-- s = SSM Group, G = Received BGP C-Mroute
Incoming interface: Vlan101, RPF nbr 10.1.101.11
Outgoing interface list:
Vlan901, Forward/Sparse, 00:42:41/stopped <-- L3VNI installed as OIF interface
第4步和第5步（枝葉–01和枝葉–03）：組播到達FHR枝葉並通過交換矩陣傳送到LHR枝葉。此處提供的驗證命令摘要。您可以在場景1中檢查這些命令的詳細驗證。
show ip mroute vrf green 226.1.1.1 count <-- software mroute counters
show ip mfib vrf green 226.1.1.1<-- hardware mroute details & counters
sh platform software fed switch active ip mfib vrf green 226.1.1.1/32 10.1.101.11 detail <-- ASIC entry details and counters
場景3：交換矩陣內的單個RP（常規稀疏模式）
此模式可互換稱為非任播RP或外部RP模式。在此模式下，重疊中只有一個RP。因此，重疊中的(*,G)樹可以跨多個站點。BGP使用MVPN RT-6在交換矩陣中通告(*,G)成員身份。如果RP和FHR位於不同站點，則會在交換矩陣中傳送PIM暫存器。這是重疊中PIM SM的預設操作模式。
網路圖表
對於此模式，請考慮以下BGP路由型別及其來源
建立者：源VTEP
- EVPN路由型別2.用於獲取源的單播和VRI資訊，並在VTEP加入STP樹時新增到C組播路由（MVPN型別7）。
- MVPN Route-type 5.傳送到S、G的VTEP的源A-D路由
建立者：RP VTEP
- EVPN路由型別5.用於獲取RP環回的單播和VRI資訊。環回不會建立Route-type 2，因此使用型別5。
- MVPN Route-type 7.這是從EVPN型別2提取並傳送到源VTEP的IGMP連線+ RT VRI詳細資訊，它驅動MRIB OIF的建立。
建立者：接收方VTEP
- MVPN Route-type 6. 由接收方VTEP建立的路由型別，用於將共用樹*,G（RPT樹）連線到RP。
- MVPN Route-type 7.來自IGMP或MLD層以及來自EVPN型別2的資訊用於建立此BGP型別聯接。Type-7驅動在Source端建立MRIB OIF。
EVPN第2類要求：
- FHR（來源VTEP）驗證ARP（或ND）和CEF鄰接關係（確認來源為直接連線）。
- FHR發起EVPN第2型BGP更新
EVPN第5類要求：
- 配置了RP環回並將其通告到BGP
MVPN第5類要求：
在此模式中，源站點上的枝葉只滿足以下兩個條件時才會通告(S，G)的源活動A-D消息。
- 它接收RPF介面上流向源的流量。（來源會傳送到FHR）
- L3VNI SVI介面作為(S，G)條目的轉發介面新增，作為從RP加入S，G作為PIM註冊過程的一部分。（L3VNI SVI安裝在OIF清單中）
MVPN第6類要求：
- RP通告包含其VRI和單播可達性詳細資訊的其EVPN第5類路由。
- 在LHR上收到的IGMP加入會觸發向RP的BGP更新
MVPN第7類要求：
- 存在EVPN型別2條目（使用正確的VRI構建C-Multicast路由型別7時需要該條目，並且是從源VTEP傳送的）
- 存在MVPN第5類條目（解析可用於STP加入的源/組對時需要該條目）
- 接收方VTEP:LHR VTEP已接收並處理IGMP成員身份報告
- RP VTEP:RP已收到組播註冊資料包，具有EVPN路由，並具有S、G的接收器（通過型別6獲取）
- LHR VTEP RPF介面是交換矩陣L3VNI介面
驗證此方案所需的事件順序
驗證接收方VTEP最初加入共用樹所需的步驟，然後切換到最短路徑樹。這涉及檢查BGP表、IGMP和MRIB建立狀態。
步驟EVPN(Leaf-03):在LHR上獲知來自RP的EVPN型別5。這是接收方VTEP建立MVPN第6類路由所必需的
Leaf-03#sh bgp l2vpn evpn all route-type 5 0 10.2.255.255 32
...or you can also use:
Leaf-03#sh bgp l2vpn evpn detail [5][1:1][0][32][10.2.255.255]/17
BGP routing table entry for [5][1:1][0][32][10.2.255.255]/17, version 25
Paths: (2 available, best #1, table EVPN-BGP-Table)
Not advertised to any peer
Refresh Epoch 2
Local
172.16.254.4 (metric 3) (via default) from 172.16.255.1 (172.16.255.1) <-- RP's global next hop IP
Origin incomplete, metric 0, localpref 100, valid, internal, best
EVPN ESI: 00000000000000000000, Gateway Address: 0.0.0.0, VNI Label 50901, MPLS VPN Label 0
Extended Community: RT:1:1 MVPN AS:65001:0.0.0.0
MVPN VRF:172.16.255.4:2 ENCAP:8 Router MAC:7C21.0DBD.9548
Originator: 172.16.255.4, Cluster list: 172.16.255.1
rx pathid: 0, tx pathid: 0x0
Updated on Jan 13 2021 19:09:31 UTC
Refresh Epoch 2
Local
MVPN VRF:172.16.255.4:2 <-- MVPN VRI
Router MAC:7C21.0DBD.9548 <-- Leaf-02 RMAC
第1步(Leaf-03)：收到IGMP成員報告
Leaf-03#sh ip igmp snooping groups
Vlan Group Type Version Port List
-----------------------------------------------------------------------
102 224.0.1.40 igmp v2 Gi1/0/10
102 226.1.1.1 igmp v2 Gi1/0/10 <-- Client has joined
第2步（枝葉–03）：建立MVPN第6類，傳送到RP，由RP（枝葉–02）接收
#### Type-6 from the Receiver VTEP perspective ###
Leaf-03#sh bgp ipv4 mvpn all route-type 6 1:1 65001 10.2.255.255 226.1.1.1 <-- Source is RP Loopback
...or you can also use:
Leaf-03#sh bgp ipv4 mvpn detail [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22
BGP routing table entry for [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22, version 13
Paths: (1 available, best #1, table MVPNv4-BGP-Table)
Advertised to update-groups:
1
Refresh Epoch 1
Local
0.0.0.0 from 0.0.0.0 (172.16.255.6) <-- Generated locally
Origin incomplete, localpref 100, weight 32768, valid, sourced, local, best
Extended Community: RT:172.16.255.4:2 <-- VRI Ext Comm added from EVPN Type-5
rx pathid: 2, tx pathid: 0x0
Updated on Jan 14 2021 14:51:29 UTC
#### Type-6 from the RP perspective ###
Leaf-02#sh bgp ipv4 mvpn all route-type 6 1:1 65001 10.2.255.255 226.1.1.1 <-- type-6, RD 1:1, AS 65001, Source/Group
...or you can also use:
Leaf-02#sh bgp ipv4 mvpn detail [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22
BGP routing table entry for [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22, version 25
Paths: (2 available, best #1, table MVPNv4-BGP-Table)
Flag: 0x100
Not advertised to any peer
Refresh Epoch 2
Local
172.16.255.6 (metric 3) from 172.16.255.1 (172.16.255.1)
Origin incomplete, metric 0, localpref 100, valid, internal, best
Extended Community: RT:172.16.255.4:2 <-- Contains VRI learned from EVPN Type-5
Originator: 172.16.255.6, Cluster list: 172.16.255.1 <-- Sent from Leaf03 IP to RP
rx pathid: 0, tx pathid: 0x0
Updated on Jan 14 2021 14:54:29 UTC
第1步和第2步調試（枝葉–01）：IGMP報告、EVPN源查詢和MVPN第6類建立
debug ip igmp vrf green 226.1.1.1
debug bgp ipv4 mvpn updates
debug bgp ipv4 mvpn updates events
### Client sends IGMP membership report ###
### IGMP processes this IGMP report ###
*Feb 1 21:13:19.029: IGMP(2): Received v2 Report on Vlan102 from 10.1.102.12 for 226.1.1.1 <--- IGMP processes received report
*Feb 1 21:13:19.029: IGMP(2): Received Group record for group 226.1.1.1, mode 2 from 10.1.102.12 for 0 sources
*Feb 1 21:13:19.029: IGMP(2): WAVL Insert group: 226.1.1.1 interface: Vlan102 Successful
*Feb 1 21:13:19.029: IGMP(2): Switching to EXCLUDE mode for 226.1.1.1 on Vlan102
*Feb 1 21:13:19.029: IGMP(2): Updating EXCLUDE group timer for 226.1.1.1
*Feb 1 21:13:19.029: IGMP(2): MRT Add/Update Vlan102 for (*,226.1.1.1) by 0 <--- Notify MRT to add Vlan 102 into Outgoing interface list
### BGP is informed by IGMP, does an EVPN source lookup, creates the MVPN Type-6 route, sends to RR ###
(Without the EVPN Type-5 prefix already in BGP you see IGMP debugs trigger, but no subsequent BGP debugs as seen here)
*Feb 1 21:13:19.033: BGP[15] MVPN: add c-route, type 6, bs len 0 asn=0, rd=1:1, <-- Start creation of Type-6 C-multicast Shared Tree Join
*Feb 1 21:13:19.033: source=10.2.255.255/4, <-- RP loopback255
*Feb 1 21:13:19.033: group=226.1.1.1/4, <-- Group IP
*Feb 1 21:13:19.033: nexthop=172.16.254.4, <-- Global Next-Hop learned from EVPN VRI
*Feb 1 21:13:19.033: len left = 0
*Feb 1 21:13:19.033: BGP[14] MVPN umh lookup: vrfid 2, source 10.2.255.255 <-- UMH (upstream multicast hop) as found in the RT of the EVPN type-5
*Feb 1 21:13:19.033: BGP[4] MVPN umh lookup: vrfid 2, source 10.2.255.255, net 1:1:10.2.255.255/32, 1:1:10.2.255.255/32 with matching nexthop 172.16.254.4, remote-rd [1:1]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.4:2, <-- EVPN info adding to MVPN
*Feb 1 21:13:19.033: BGP: MVPN(15) create local route [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22 <--- MVPN creating type-6
*Feb 1 21:13:19.033: BGP[15] MVPN: add c-route, type 6, bs len 0 asn=65001, rd=1:1,
*Feb 1 21:13:19.033: source=10.2.255.255/4,
*Feb 1 21:13:19.033: group=226.1.1.1/4,
*Feb 1 21:13:19.033: nexthop=172.16.254.4,
*Feb 1 21:13:19.033: len left = 0
*Feb 1 21:13:19.033: BGP[14] MVPN umh lookup: vrfid 2, source 10.2.255.255
*Feb 1 21:13:19.033: BGP[4] MVPN umh lookup: vrfid 2, source 10.2.255.255, net 1:1:10.2.255.255/32, 1:1:10.2.255.255/32 with matching nexthop 172.16.254.4, remote-rd [1:1]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.4:2,
*Feb 1 21:13:19.034: BGP(15): skip vrf default table RIB route [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22
*Feb 1 21:13:19.034: BGP(15): 172.16.255.1 NEXT_HOP self is set for sourced RT Filter for net [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22
*Feb 1 21:13:19.034: BGP(15): (base) 172.16.255.1 send UPDATE (format) [6][1:1][65001][10.2.255.255/32][226.1.1.1/32]/22, next 172.16.255.6, metric 0, path Local, extended community RT:172.16.255.4:2 <-- Advertise to RR (172.16.255.1)
第3步和第4步(Leaf-01):從FHR的角度，驗證S、G建立和註冊事件（S、G建立和註冊幾乎同時發生）
3.資料流量在FHR VTEP開始並建立S，G。此處適用「未檢測到的組播源」一節中註明的要求。
4. Leaf-01通過其PIM隧道向RP執行源註冊
Leaf-01#debug ip pim vrf green 226.1.1.1
PIM debugging is on
Leaf-01#debug ip mrouting vrf green 226.1.1.1
IP multicast routing debugging is on
### Debugs for PIM and Mroute show creation of S,G and PIM register encap event ###
*Jan 29 18:18:37.602: PIM(2): Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for 226.1.1.1
*Jan 29 18:18:58.426: MRT(2): (10.1.101.11,226.1.1.1), RPF install from /0.0.0.0 to Vlan101/10.1.101.11<-- S,G is creation message (MRT process)
*Jan 29 18:18:58.427: PIM(2): Adding register encap tunnel (Tunnel4) as forwarding interface of (10.1.101.11, 226.1.1.1). <-- Sending via register (PIM process)
*Jan 29 18:18:58.427: MRT(2): Set the F-flag for (*, 226.1.1.1)
*Jan 29 18:18:58.427: MRT(2): Set the F-flag for (10.1.101.11, 226.1.1.1)
*Jan 29 18:18:58.428: MRT(2): Create (10.1.101.11,226.1.1.1), RPF (Vlan101, 10.1.101.11, 0/0) <-- S,G is creation message (MRT process)
*Jan 29 18:18:58.428: MRT(2): Set the T-flag for (10.1.101.11, 226.1.1.1)
### Tunnel 4 is PIM Register tunnel (Encap: encapsulate in tunnel to RP) ####
Leaf-01#sh int tunnel4
Tunnel4 is up, line protocol is up
Hardware is Tunnel
Description: Pim Register Tunnel (Encap) for RP 10.2.255.255 on VRF green <-- VRF green for Leaf-02 RP
Interface is unnumbered. Using address of Loopback901 (10.1.255.1) <-- Local Loopback
### S,G is created when Source sends data traffic ###
Leaf-01#sh ip mroute vrf green 226.1.1.1
IP Multicast Routing Table
<...snip...>
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 226.1.1.1), 00:00:16/stopped, RP 10.2.255.255, flags: SPF
Incoming interface: Vlan901, RPF nbr 172.16.254.4
Outgoing interface list: Null
(10.1.101.11, 226.1.1.1), 00:00:16/00:02:47, flags: FTGqx
Incoming interface: Vlan101, RPF nbr 10.1.101.11, Registering <-- S,G created, in Register state, RPF IP is the /32 host prefix for this source
Outgoing interface list:
Vlan901, Forward/Sparse, 00:00:16/00:02:43 <-- OIF is the L3VNI SVI
#### Checking S,G in Hardware ###
Leaf-01#sh platform software fed switch active ip mfib vrf green 226.1.1.1/32 10.1.101.11 de
MROUTE ENTRY vrf 2 (10.1.101.11, 226.1.1.1/32) <-- VRF 2 is the ID for vrf green
HW Handle: 140213987784872 Flags: {Svl}
RPF interface: Vlan101(59)): SVI <-- RPF is Direct connected on a Local Subnet
HW Handle:140213987784872 Flags:A
Number of OIF: 2
Flags: 0x4 Pkts : 336 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
OIF Details:
Vlan101 A <-- Accept interface is programmed correctly
Vlan901 F {Remote} <-- Forward interface is L3VNI SVI
(Adj: 0x5f ) <-- Validate this Adj
Htm: 0x7f861cf071b8 Si: 0x7f861cf04838 Di: 0x7f861cf097a8 Rep_ri: 0x7f861ceecb38
### Check ADJ 0x5f for next hop details ###
Leaf-01#sh platform software fed switch active ip adj
IPV4 Adj entries
dest if_name dst_mac si_hdl ri_hdl pd_flags adj_id Last-modified
---- ------- ------- ------ ------ -------- ----- ------------------------
239.1.1.1 nve1.VNI50901 4500.0000.0000 0x7f861ce659b8 0x7f861ce65b68 0x60 0x5f 2021/01/29 17:07:06.568
Dest = MDT default group 239.1.1.1
Outgoing Interface = Nve1 using L3 VNI 50901
第4步（枝葉–02）：從RP角度，確認源註冊到達RP並建立S、G。
### PIM debugs showing PIM register event ###
Leaf-02#debug ip pim vrf green 226.1.1.1
PIM debugging is on
*Jan 29 18:21:35.500: PIM(2): Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for 226.1.1.1
*Jan 29 18:21:35.500: PIM: rp our address <-- Leaf-02 is the RP
*Jan 29 18:21:41.005: PIM(2): Received v2 Register on Vlan901 from 10.1.255.1 <--- IP of Lo901 on Leaf-01 sent register
*Jan 29 18:21:41.005: for 10.1.101.11, group 226.1.1.1
*Jan 29 18:21:41.006: PIM(2): Adding register decap tunnel (Tunnel4) as accepting interface of (10.1.101.11, 226.1.1.1).
*Jan 29 18:21:41.008: PIM(2): Upstream mode for (10.1.101.11, 226.1.1.1) changed from 1 to 2
### Tunnel 4 is PIM Register tunnel (decap) ####
Leaf-02#sh int tunnel 4
Tunnel4 is up, line protocol is up
Hardware is Tunnel
Description: Pim Register Tunnel (Decap) for RP 10.2.255.255 on VRF green <-- decap side of register tunnel
Interface is unnumbered. Using address of Loopback255 (10.2.255.255) <-- RP IP
### Mroute debugs show pim Register triggering S,G ###
Leaf-02#debug ip mrouting vrf green 226.1.1.1
IP multicast routing debugging is on
*Jan 29 20:44:31.483: MRT(2): (10.1.101.11,226.1.1.1), RPF install from /0.0.0.0 to Vlan901/172.16.254.3 <-- RPF is to Leaf-01
*Jan 29 20:44:31.485: MRT(2): Create (10.1.101.11,226.1.1.1), RPF (Vlan901, 172.16.254.3, 200/0) <-- Create the S,G
*Jan 29 20:44:33.458: MRT(2): Set the T-flag for (10.1.101.11, 226.1.1.1) <-- Set SPT bit for S,G
### S,G is created and traffic is now sent along the *,G shared tree ###
Leaf-02#sh ip mroute vrf green
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 226.1.1.1), 00:05:49/stopped, RP 10.2.255.255, flags: SGx <-- Sparse, Received BGP C-Mroute
Incoming interface: Null, RPF nbr 0.0.0.0 <-- RP is us (Incoming Interface Null with 0.0.0.0 RPF)
Outgoing interface list:
Vlan901, Forward/Sparse, 00:05:49/stopped
(10.1.101.11, 226.1.1.1), 00:01:22/00:01:41, flags: PTXgx <-- Pruned, SPT bit, Sent BGP C-Mroute
Incoming interface: Vlan901, RPF nbr 172.16.254.3 <-- Leaf-01 is RPF next hop
Outgoing interface list: Null
第5步（枝葉–02）：RP具有接收器，因此立即建立了第7類MVPN源樹加入路由
Leaf-02#sh ip mroute vrf green 226.1.1.1
<...snip...>
(*, 226.1.1.1), 00:02:22/00:00:37, RP 10.2.255.255, flags: SGx
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan901, Forward/Sparse, 00:02:22/00:00:37 <-- L3 VNI is populated from Receiver BGP Type-6 join
#### Debugs showing Type-7 creation from RP ####
Leaf-02#debug bgp ipv4 mvpn updates
BGP updates debugging is on for address family: MVPNv4 Unicast
Leaf-02#debug bgp ipv4 mvpn updates events
BGP update events debugging is on for address family: MVPNv4 Unicast
*Jan 29 18:21:41.008: BGP[15] MVPN: add c-route, type 7, bs len 0 asn=0, rd=1:1,
*Jan 29 18:21:41.008: source=10.1.101.11/4,
*Jan 29 18:21:41.008: group=226.1.1.1/4,
*Jan 29 18:21:41.008: nexthop=172.16.254.3, <-- Leaf-01 Global next hop
*Jan 29 18:21:41.008: len left = 0
*Jan 29 18:21:41.008: BGP[14] MVPN umh lookup: vrfid 2, source 10.1.101.11
*Jan 29 18:21:41.008: BGP[4] MVPN umh lookup: vrfid 2, source 10.1.101.11, net 1:1:10.1.101.11/32, 1:1:10.1.101.11/32 with matching nexthop 172.16.254.3, remote-rd [172.16.]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.3:2, <-- This is the VRI picked up from the EVPN Type-2
*Jan 29 18:21:41.009: BGP: MVPN(15) create local route [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
*Jan 29 18:21:41.009: BGP[15] MVPN: add c-route, type 7, bs len 0 asn=65001, rd=1:1,
*Jan 29 18:21:41.009: source=10.1.101.11/4,
*Jan 29 18:21:41.009: group=226.1.1.1/4,
*Jan 29 18:21:41.009: nexthop=172.16.254.3,
*Jan 29 18:21:41.009: len left = 0
*Jan 29 18:21:41.009: BGP[14] MVPN umh lookup: vrfid 2, source 10.1.101.11
*Jan 29 18:21:41.009: BGP[4] MVPN umh lookup: vrfid 2, source 10.1.101.11, net 1:1:10.1.101.11/32, 1:1:10.1.101.11/32 with matching nexthop 172.16.254.3, remote-rd [172.16.]: 0x9:65001:0.0.0.0, 0x10B:172.16.255.3:2,
### Type-7 Locally created on RP and sent to Source Leaf-01 ###
Leaf-02#sh bgp ipv4 mvpn all
BGP table version is 81, local router ID is 172.16.255.4
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 172.16.254.3:101 <-- Note the VRI is learnt from Leaf-01
*> [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- [7] = type-7 for this S,G / VRI 172.16.254.3:101 learned from Leaf-01
0.0.0.0 32768 ? <-- 0.0.0.0 locally originated with local Weight
第6步(Leaf-01):Source Leaf-01接收並安裝MVPN Route-Type 7。（L3 VNI SVI安裝為S、G的轉發介面）
### Received Type-7 from Leaf-02 RP ###
Leaf-01#debug bgp ipv4 mvpn updates
BGP updates debugging is on for address family: MVPNv4 Unicast
Leaf-01#debug bgp ipv4 mvpn updates events
BGP update events debugging is on for address family: MVPNv4 Unicast
*Jan 29 18:18:58.457: BGP(15): 172.16.255.1 rcvd UPDATE w/ attr: nexthop 172.16.255.4, origin ?, localpref 100, metric 0, originator 172.16.255.4, clusterlist 172.16.255.1, extended community RT:172.16.255.3:2 <-- Type-7 from Route Reflector 172.16.255.1
*Jan 29 18:18:58.457: BGP(15): 172.16.255.1 rcvd [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Received [7] Type-7 BGP join route
*Jan 29 18:18:58.457: BGP(15): skip vrf default table RIB route [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
*Jan 29 18:18:58.458: BGP(15): add RIB route (0:0)[7][1:1][65001][10.1.101.11/32][226.1.1.1/32]/22
### PIM updated by MVPN to install L3 VNI in Outgoing Interface List ###
Leaf-01#debug ip pim vrf green 226.1.1.1
PIM debugging is on
Leaf-01#debug ip mrouting vrf green 226.1.1.1
IP multicast routing debugging is on
*Jan 29 18:18:58.458: PIM(2): Join-list: (10.1.101.11/32, 226.1.1.1), S-bit set, BGP C-Route
*Jan 29 18:18:58.459: MRT(2): WAVL Insert VxLAN interface: Vlan901 in (10.1.101.11,226.1.1.1) Next-hop: 239.1.1.1 VNI 50901 Successful <-- VxLAN info such as VNI, and outer Mcast group during Olist creation
*Jan 29 18:18:58.459: MRT(2): set min mtu for (10.1.101.11, 226.1.1.1) 18010->9198
*Jan 29 18:18:58.460: MRT(2): Add Vlan901/239.1.1.1/50901 to the olist of (10.1.101.11, 226.1.1.1), Forward state - MAC not built <-- OIF is added for the VNI SVI 901
*Jan 29 18:18:58.460: PIM(2): Add Vlan901/0.0.0.0 to (10.1.101.11, 226.1.1.1), Forward state, by BGP SG Join
*Jan 29 18:18:58.460: MRT(2): Add Vlan901/239.1.1.1/50901to the olist of (10.1.101.11, 226.1.1.1), Forward state - MAC not built
第7步(Leaf-01):Leaf-01通告S、G的MVPN源A-D Type-5
Leaf-01#debug bgp ipv4 mvpn updates
BGP updates debugging is on for address family: MVPNv4 Unicast
Leaf-01#debug bgp ipv4 mvpn updates events
BGP update events debugging is on for address family: MVPNv4 Unicast
*Jan 29 18:18:58.461: BGP(15): nettable_walker [5][1:1][10.1.101.11][226.1.1.1]/18 route sourced locally <-- BGP determines route is local to Leaf-01
*Jan 29 18:18:58.461: BGP(15): delete RIB route (0:0)[5][1:1][10.1.101.11][226.1.1.1]/18
*Jan 29 18:18:58.461: BGP(15): 172.16.255.1 NEXT_HOP self is set for sourced RT Filter for net [5][1:1][10.1.101.11][226.1.1.1]/18
*Jan 29 18:18:58.461: BGP(15): (base) 172.16.255.1 send UPDATE (format) [5][1:1][10.1.101.11][226.1.1.1]/18, next 172.16.255.3, metric 0, path Local, extended community RT:1:1 <-- Send Type-5 update
第8步(Leaf-03)：接收器VTEP獲取型別5並安裝源A-D路由用於S、G
Leaf-03#debug bgp ipv4 mvpn updates
BGP updates debugging is on for address family: MVPNv4 Unicast
Leaf-03#debug bgp ipv4 mvpn updates events
BGP update events debugging is on for address family: MVPNv4 Unicast
*Jan 29 19:18:53.318: BGP(15): 172.16.255.1 rcvd UPDATE w/ attr: nexthop 172.16.255.3, origin ?, localpref 100, metric 0, originator 172.16.255.3, clusterlist 172.16.255.1, community no-export, extended community RT:1:1
*Jan 29 19:18:53.319: BGP(15): 172.16.255.1 rcvd [5][1:1][10.1.101.11][226.1.1.1]/18 <-- Type-5 Received from Source VTEP Leaf-01
*Jan 29 19:18:53.319: BGP(15): skip vrf default table RIB route [5][1:1][10.1.101.11][226.1.1.1]/18
Leaf-03#sh bgp ipv4 mvpn all route-type 5 10.1.101.11 226.1.1.1
...or you can also use:
Leaf-03#sh bgp ipv4 mvpn detail [5][1:1][10.1.101.11][226.1.1.1]/18
BGP routing table entry for [5][1:1][10.1.101.11][226.1.1.1]/18, version 41 <-- Type-5 A-D route from Leaf-01
Paths: (2 available, best #2, table MVPNv4-BGP-Table, not advertised to EBGP peer)
Flag: 0x100
Not advertised to any peer
Refresh Epoch 1
Local
172.16.255.3 (metric 3) from 172.16.255.1 (172.16.255.1) <-- Leaf-01 IP
Origin incomplete, metric 0, localpref 100, valid, internal, best
Community: no-export
Extended Community: RT:1:1
Originator: 172.16.255.3, Cluster list: 172.16.255.1
rx pathid: 0, tx pathid: 0x0
Updated on Jan 29 2021 19:18:53 UTC
第9步（枝葉–03）：S，G建立，枝葉–03傳送MVPN型別–7以加入SPT樹，並開始接受流量
debug ip mrouting vrf green 226.1.1.1
debug bgp ipv4 mvpn updates
debug bgp ipv4 mvpn updates events
### Debug of Mrouting shows S,G create and call to BGP to create Type-7 BGP S,G join ###
*Feb 12 19:34:26.045: MRT(2): (10.1.101.11,226.1.1.1), RPF install from /0.0.0.0 to Vlan901/172.16.254.3 <-- RPF check done as first operation. Selected L3VNI SVI and Leaf-01 next hop
*Feb 12 19:34:26.046: MRT(2): Create (10.1.101.11,226.1.1.1), RPF (Vlan901, 172.16.254.3, 200/0) <-- RPF successful Creating S,G
*Feb 12 19:34:26.047: MRT(2): WAVL Insert interface: Vlan102 in (10.1.101.11,226.1.1.1) Successful
*Feb 12 19:34:26.047: MRT(2): set min mtu for (10.1.101.11, 226.1.1.1) 18010->9198
*Feb 12 19:34:26.047: MRT(2): Set the T-flag for (10.1.101.11, 226.1.1.1)
*Feb 12 19:34:26.048: MRT(2): Add Vlan102/226.1.1.1 to the olist of (10.1.101.11, 226.1.1.1), Forward state - MAC not built <-- Adding Vlan102 Receiver SVI into OIF list
*Feb 12 19:34:26.048: MRT(2): Set BGP Src-Active for (10.1.101.11, 226.1.1.1) <-- Signaling to BGP that this Source is seen and join SPT path
### BGP Type-7 created ###
Leaf-03#sh bgp ipv4 mvpn all
Route Distinguisher: 172.16.254.3:101 <-- VRI Route Distinguisher
*> [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Type [7], VRI, S,G info
0.0.0.0 32768 ? <-- created locally
Leaf-03#sh ip mroute vrf green 226.1.1.1 10.1.101.11
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(10.1.101.11, 226.1.1.1), 00:08:41/00:02:13, flags: TgQ <-- SPT bit, Sent MVPN type-7, Received MVPN type-5
Incoming interface: Vlan901, RPF nbr 172.16.254.3 <-- Receive from L3VNI via Leaf-01 IP next hop
Outgoing interface list:
Vlan102, Forward/Sparse, 00:08:41/00:02:22 <-- Send to host in Vlan 102
第10步(Leaf-01):Leaf-01從Leaf-03接收並安裝MVPN Type-7
debug bgp ipv4 mvpn updates
debug bgp ipv4 mvpn updates events
### Type-7 Received from Leaf-03 VTEP and installed into RIB ###
*Feb 12 19:55:29.000: BGP(15): 172.16.255.1 rcvd [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22 <-- Type-7 from Leaf-03
*Feb 12 19:55:29.000: BGP(15): skip vrf default table RIB route [7][172.16.254.3:101][65001][10.1.101.11/32][226.1.1.1/32]/22
*Feb 12 19:55:29.000: BGP(15): add RIB route (0:0)[7][1:1][65001][10.1.101.11/32][226.1.1.1/32]/22
場景4：交換矩陣外部的RP（從邊界枝葉02從IP空間匯入RP）
此案例與案例2基本相同。整個交換矩陣使用單個RP。不同之處在於，RP IP必須從非交換矩陣IP空間匯入到交換矩陣，並通告到BGP。
本節顯示了與方案3的區別。相同的步驟和方法僅在場景3中說明
- 請參閱從方案3驗證此方案所需的事件順序，因為BGP和PIM操作相同
網路圖表
驗證邊界交換機從IP匯入到交換矩陣
此設計與場景3的主要區別是需要首先將RP IP從IP空間匯入EVPN。
Border需要包含特定命令以匯入/匯出交換矩陣和IP空間：
- route-target <value> spitching命令在VRF配置部分
- 在BGP vrf地址系列下通告l2vpn evpn
驗證(Leaf-02)：配置
Leaf-02#sh run vrf green
Building configuration...
Current configuration : 1533 bytes
vrf definition green
rd 1:1
!
address-family ipv4
mdt auto-discovery vxlan
mdt default vxlan 239.1.1.1
mdt overlay use-bgp
route-target export 1:1
route-target import 1:1
route-target export 1:1 stitching <-- BGP-EVPN fabric redistributes the stitching routes between the EVPN and the IP BGP
route-target import 1:1 stitching
exit-address-family
Leaf-02#sh run | sec router bgp
address-family ipv4 vrf green <--- BGP VRF green address-family
advertise l2vpn evpn <--- Use the 'advertise l2vpn evpn' command and 'export stitching' RTs to push the native routes towards the EVPN
redistribute connected
redistribute static
redistribute ospf 2 match internal external 1 external 2 <-- Learning via external OSPF neighbor in VRF
exit-address-family
驗證(Leaf-02)：字首匯入和通告
debug bgp vpnv4 unicast updates
debug bgp vpnv4 unicast updates events
debug bgp l2vpn evpn updates
debug bgp l2vpn evpn updates events
*Feb 15 15:30:54.407: BGP(4): redist event (1) request for 1:1:10.2.255.255/32 <-- VPNv4 Redistribute statement present in BGP address family
*Feb 15 15:30:54.407: BGP(4) route 1:1:10.2.255.255/32 gw-1 10.2.1.2 src_proto (ospf) path-limit 1
*Feb 15 15:30:54.407: BGP(4): route 1:1:10.2.255.255/32 up
*Feb 15 15:30:54.407: bgp_ipv4set_origin: redist 1, opaque 0x0, net 10.2.255.255
*Feb 15 15:30:54.407: BGP(4): sourced route for 1:1:10.2.255.255/32 path 0x7FF8065EB9C0 id 0 gw 10.2.1.2 created (weight 32768)
*Feb 15 15:30:54.408: BGP(4): redistributed route 1:1:10.2.255.255/32 added gw 10.2.1.2
*Feb 15 15:30:54.408: BGP: topo green:VPNv4 Unicast:base Remove_fwdroute for 1:1:10.2.255.255/32
*Feb 15 15:30:54.408: BGP(4): 1:1:10.2.255.255/32 import vpn re-orig or locally sourced or learnt from CE <-- Prefix learned from external CE
*Feb 15 15:30:54.409: BGP(10): update modified for [5][1:1][0][32][10.2.255.255]/17 <--- EVPN picked up and Type-5 creation
*Feb 15 15:30:54.409: BGP(10): 172.16.255.1 NEXT_HOP set to vxlan local vtep-ip 172.16.254.4 for net [5][1:1][0][32][10.2.255.255]/17 <-- Set NH to Leaf-02 loopback
*Feb 15 15:30:54.409: BGP(10): update modified for [5][1:1][0][32][10.2.255.255]/17
*Feb 15 15:30:54.409: BGP(10): (base) 172.16.255.1 send UPDATE (format) [5][1:1][0][32][10.2.255.255]/17, next 172.16.254.4, metric 2, path Local, extended community RT:1:1 OSPF DOMAIN ID:0x0005:0x000000020200 MVPN AS:65001:0.0.0.0 MVPN VRF:172.16.255.4:2 ENCAP:8 Router MAC:7C21.0DBD.9548 OSPF RT:0.0.0.0:2:0 OSPF ROUTER ID:10.2.255.255:0
<-- BGP EVPN Type update created from Non-fabric Imported prefix and sent to RR
### Verify the NLRI is learned and Imported on Border Leaf-02 ###
Leaf-02#sh bgp vpnv4 unicast all
BGP table version is 39, local router ID is 172.16.255.4
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path, L long-lived-stale,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 1:1 (default for vrf green)
AF-Private Import to Address-Family: L2VPN E-VPN, Pfx Count/Limit: 3/1000 <-- Prefix Import details. (Note default import limit of 1000)
*> 10.2.255.255/32 10.2.1.2 2 32768 ? <-- Locally redistributed, Next hop on CE device
Leaf-02#sh bgp l2vpn evpn all route-type 5 0 10.2.255.255 32
...or you can also use:
Leaf-02#sh bgp l2vpn evpn detail [5][1:1][0][32][10.2.255.255]/17
BGP routing table entry for [5][1:1][0][32][10.2.255.255]/17, version 69
Paths: (1 available, best #1, table EVPN-BGP-Table)
Advertised to update-groups:
2
Refresh Epoch 1
Local, imported path from base
10.2.1.2 (via vrf green) from 0.0.0.0 (172.16.255.4) <-- Imported to EVPN Fabric table from IP
Origin incomplete, metric 2, localpref 100, weight 32768, valid, external, best
EVPN ESI: 00000000000000000000, Gateway Address: 0.0.0.0, local vtep: 172.16.254.4, VNI Label 50901, MPLS VPN Label 17 <-- VTEP IP of Leaf-02, L3VNI label
Extended Community: RT:1:1 OSPF DOMAIN ID:0x0005:0x000000020200
MVPN AS:65001:0.0.0.0 MVPN VRF:172.16.255.4:2 ENCAP:8 <-- MVPN VRI created
Router MAC:7C21.0DBD.9548 OSPF RT:0.0.0.0:2:0
OSPF ROUTER ID:10.2.255.255:0
rx pathid: 0, tx pathid: 0x0
Updated on Feb 15 2021 15:30:54 UTC
驗證（枝葉–02）：到RP的邊界路徑
Leaf-02#sh ip mroute vrf green
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - Extranet,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group,
G - Received BGP C-Mroute, g - Sent BGP C-Mroute,
N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed,
Q - Received BGP S-A Route, q - Sent BGP S-A Route,
V - RD & Vector, v - Vector, p - PIM Joins on route,
x - VxLAN group, c - PFP-SA cache created entry,
* - determined by Assert, # - iif-starg configured on rpf intf,
e - encap-helper tunnel flag
Outgoing interface flags: H - Hardware switched, A - Assert winner, p - PIM Join
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 226.1.1.1), 2d21h/stopped, RP 10.2.255.255, flags: SJGx <-- *,G for group and Non-fabric RP IP
Incoming interface: Vlan2001, RPF nbr 10.2.1.2 <-- RPF neighbor is populated for IP next hop outside VxLAN
Outgoing interface list:
Vlan901, Forward/Sparse, 01:28:47/stopped <-- Outgoing is L3VNI SVI
方案5：資料MDT
驗證MDT資料組
MDT資料組類似於其MDT預設組，其中要封裝的TRM的外部隧道組。但是，與「MDT預設值」不同，此組只有擁有TRM組感興趣的接收者才具有VTEP的加入此樹。
所需配置
vrf definition green
rd 1:1
!
address-family ipv4
mdt auto-discovery vxlan
mdt default vxlan 239.1.1.1
mdt data vxlan 239.1.2.0 0.0.0.255 <-- Defines MDT Data underlay group address range
mdt data threshold 1 <-- Defines the threshold before cutting over to the Data group (In Kilobits per second)
mdt overlay use-bgp spt-only
route-target export 1:1
route-target import 1:1
route-target export 1:1 stitching
route-target import 1:1 stitching
exit-address-family
!
請檢查MDT組是否已在源端正確程式設計
- MDT組的傳入介面是源端環回
- MDT組的傳出介面是底層介面
驗證Leaf-01:MRIB/MFIB中的MDT mroute是否正確
Leaf-01#sh ip mroute 239.1.2.0 172.16.254.3
<snip>
(172.16.254.3, 239.1.2.0), 00:01:19/00:02:10, flags: FT
Incoming interface: Loopback1, RPF nbr 0.0.0.0 <-- IIF is local loopback with 0.0.0.0 RPF indicating local
Outgoing interface list:
TenGigabitEthernet1/0/1, Forward/Sparse, 00:01:19/00:03:10 <-- OIF is the underlay uplink
Leaf-01#sh ip mfib 239.1.2.0 172.16.254.3
<snip>
(172.16.254.3,239.1.2.0) Flags: HW
SW Forwarding: 2/0/828/0, Other: 0/0/0
HW Forwarding: 450/2/834/13, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
Null0 Flags: A <-- Null0 (Originated locally)
TenGigabitEthernet1/0/1 Flags: F NS <-- OIF is into the Underlay (Global routing table)
Pkts: 0/0/0 Rate: 0 pps
驗證MDT組的Leaf-01:FED條目
Leaf-01#show platform software fed switch active ip mfib 239.1.2.0/32 172.16.254.3 detail <-- The detail option gives summary of the HW indexes
MROUTE ENTRY vrf 0 (172.16.254.3, 239.1.2.0/32) <-- vrf 0 = global for this MDT Data S,G pair
HW Handle: 140028029798744 Flags:
RPF interface: Null0(1)): <-- Leaf-01 is the Source(Null0)
HW Handle:140028029798744 Flags:A
Number of OIF: 2
Flags: 0x4 Pkts : 570 <-- Packets that used this adjacency (similar to the mfib command, but shown at the FED layer)
OIF Details:
TenGigabitEthernet1/0/1 F NS <-- The Underlay Outgoing Interface and F-Forward flag is set
Null0 A <-- The Incoming Interface is local loopback1 and A-Accept flag set
Htm: 0x7f5ad0fa48b8 Si: 0x7f5ad0fa4258 Di: 0x7f5ad0fa8948 Rep_ri: 0x7f5ad0fa8e28 <--The DI (dest index) handle
DI details
----------
Handle:0x7f5ad0fa8948 Res-Type:ASIC_RSC_DI Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV4 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x536e mtu_index/l3u_ri_index0:0x0 index1:0x536e mtu_index/l3u_ri_index1:0x0 index2:0x536e mtu_index/l3u_ri_index2:0x0 index3:0x536e mtu_index/l3u_ri_index3:0x0
<snip>
Brief Resource Information (ASIC_INSTANCE# 3)
----------------------------------------
Destination index = 0x536e
pmap = 0x00000000 0x00000001
pmap_intf : [TenGigabitEthernet1/0/1] <--FED has the correct programing of the OIF
==============================================================
檢查MDT組是否已在接收器端正確程式設計
- MDT組的傳入介面是返回源端環回的RPF介面
- MDT組的傳出介面是Encap/Decap隧道介面
驗證Leaf-02:MRIB/MFIB中的MDT mroute正確
Leaf-03#sh ip mroute 239.1.2.0 172.16.254.3 <-- This is the Global MDT Data Group
<snip>
(172.16.254.3, 239.1.2.0), 00:06:12/00:02:50, flags: JTx <-- Source is Leaf-01 Loopback1 IP
Incoming interface: TenGigabitEthernet1/0/1, RPF nbr 172.16.26.2
Outgoing interface list:
Tunnel0, Forward/Sparse, 00:06:12/00:02:47 <-- Decap Tunnel
Leaf-03#sh ip mfib 239.1.2.0 172.16.254.3
<snip>
Default <-- Global Routing Table
(172.16.254.3,239.1.2.0) Flags: HW
SW Forwarding: 2/0/828/0, Other: 0/0/0
HW Forwarding: 760/2/846/13, Other: 0/0/0 <-- Hardware counters indicate the entry is operating in hardware and forwarding packets
TenGigabitEthernet1/0/1 Flags: A <-- Accept via Underlay (Global) interface
Tunnel0, VXLAN Decap Flags: F NS <-- Forward to VxLAN Decap Tunnel
Pkts: 0/0/2 Rate: 0 pps
驗證MDT組的Leaf-02:FED條目
Leaf-03#show platform software fed switch active ip mfib 239.1.2.0/32 172.16.254.3 detail
MROUTE ENTRY vrf 0 (172.16.254.3, 239.1.2.0/32) <-- vrf 0 = global for this MDT Data S,G pair
HW Handle: 140592885196696 Flags:
RPF interface: TenGigabitEthernet1/0/1(55)): <-- RPF Interface to 172.16.254.3
HW Handle:140592885196696 Flags:A
Number of OIF: 2
Flags: 0x4 Pkts : 800 <-- packets that used this adjacency (similar to mfib command, but shown at the FED layer)
OIF Details:
TenGigabitEthernet1/0/1 A <-- Accept MDT packets from this interface
Tunnel0 F NS <-- Forward to Decap Tunnel to remove VxLAN header
(Adj: 0x3c ) <-- Tunnel0 Adjacency
Htm: 0x7fde54fb7d68 Si: 0x7fde54fb50d8 Di: 0x7fde54fb4948 Rep_ri: 0x7fde54fb4c58
<snip>
RI details <-- Rewrite Index is used for VxLAN decapsulation
----------
Handle:0x7fde54fb4c58 Res-Type:ASIC_RSC_RI_REP Res-Switch-Num:255 Asic-Num:255 Feature-ID:AL_FID_L3_MULTICAST_IPV4 Lkp-ftr-id:LKP_FEAT_INVALID ref_count:1
priv_ri/priv_si Handle:(nil) Hardware Indices/Handles: index0:0x1a mtu_index/l3u_ri_index0:0x0 index1:0x1a mtu_index/l3u_ri_index1:0x0 index2:0x1a mtu_index/l3u_ri_index2:0x0 index3:0x1a mtu_index/l3u_ri_index3:0x0
Brief Resource Information (ASIC_INSTANCE# 0)
----------------------------------------
ASIC# 0
Replication list :
------------------
Total #ri : 6
Start_ri : 26
Common_ret : 0
Replication entry rep_ri 0x1A #elem = 1
0) ri[0]=0xE803 Dynamic port=88ri_ref_count:1 dirty=0
<snip>
Leaf-03#show platfomr software fed switch active fwd-asic resource asic all rewrite-index range 0xE803 0XE803
ASIC#:0 RI:59395 Rewrite_type:AL_RRM_REWRITE_L2_PAYLOAD_IPV4_EVPN_DECAP(118) Mapped_rii:LVX_EVPN_DECAP(143)
<snip>
調試MDT資料組
使用MVPN調試檢查Data MDT轉換事件
來源端VTEP
Leaf#debug mvpn
<snip>
*Mar 27 12:12:11.115: MVPN: Received local withdraw for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:12:11.115: MVPN: Sending BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nh 0.0.0.0, Withdraw route
*Mar 27 12:12:11.115: MVPN: Route Type 5 deleted [(10.1.101.11, 239.1.1.1), nh 0.0.0.0] rd:1:1 send:1
*Mar 27 12:12:11.115: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: UNKNOWN, router-id: 0.0.0.0, Withdraw route
*Mar 27 12:12:11.115: MVPN: Received BGP withdraw for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:13:00.430: MVPN: Received local route update for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:13:00.431: MVPN: Route Type 5 added [(10.1.101.11, 239.1.1.1), nh 0.0.0.0] rd:1:1 send:1
*Mar 27 12:13:00.431: MVPN: RP 10.2.255.255 updated in newly created route
*Mar 27 12:13:00.431: MVPN: Sending BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nh 0.0.0.0, Originate route
*Mar 27 12:13:00.431: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: UNKNOWN, router-id: 0.0.0.0, Withdraw route
*Mar 27 12:13:00.431: MVPN: Received BGP withdraw for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:13:17.151: MVPN(green[AF_IPv4]): Successfully notified nve fordatamdt adjacency create 239.1.2.0 <-- Notify NVE about creating DATA MDT
*Mar 27 12:13:17.151: MVPN: Received local update <104:0x00:0>(172.16.254.3, 239.1.2.0) next_hop:0.0.0.0 router_id:172.16.255.3 RD:[1:1] Rmt-RD:[1:1] route type:3 <-- Received local update for the data group
*Mar 27 12:13:17.151: MVPN: LSM AD route added [(10.1.101.11,239.1.1.1) : <104:0x00:0>(172.16.254.3, 239.1.2.0)] orig:172.16.255.3 RD:[1:1] Rmt-RD:[1:1] rt:3 snd:1
*Mar 27 12:13:17.151: MVPN(green[AF_IPv4]): Sending VxLAN BGP AD prefix=[3:172.16.255.3 1:1 : (10.1.101.11,239.1.1.1)] len=23, accept=1, af=0 <-- Send the MDT Data Adjacency prefix in VxLAN BGP to remote VTEPS
*Mar 27 12:13:17.151: MVPN(green[AF_IPv4]): Originate VxLAN BGP AD rt:3
*Mar 27 12:13:17.151: MVPN(green[AF_IPv4]): VXLAN MDT-Data, node added for (10.1.101.11,239.1.1.1) MDT: 239.1.2.0 <-- Add a node for the data group
Leaf-01#
接收端VTEP
Leaf#debug mvpn
<snip>
*Mar 27 12:27:54.920: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: 172.16.255.3, router-id: 172.16.255.1, Accept route
*Mar 27 12:27:54.920: MVPN: Received BGP route update for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:27:54.920: MVPN: Route Type 5 found [(10.1.101.11, 239.1.1.1), nh 172.16.255.3]rd:1:1 send:0
*Mar 27 12:27:54.920: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: UNKNOWN, router-id: 0.0.0.0, Withdraw route
*Mar 27 12:27:54.920: MVPN: Received BGP withdraw for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:27:54.920: MVPN: Route Type 5 deleted [(10.1.101.11, 239.1.1.1), nh 172.16.255.3] rd:1:1 send:0
*Mar 27 12:28:27.648: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: UNKNOWN, router-id: 0.0.0.0, Withdraw route
*Mar 27 12:28:27.657: MVPN: Received BGP withdraw for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:28:44.235: MVPN: Received BGP prefix=[5: 1:1 : (10.1.101.11,239.1.1.1)] len=19, nexthop: 172.16.255.3, router-id: 172.16.255.1, Accept route
*Mar 27 12:28:44.235: MVPN: Received BGP route update for (10.1.101.11, 239.1.1.1) with RD: 1:1, Route Type: 5, flags: 0x00
*Mar 27 12:28:44.235: MVPN: Route Type 5 added [(10.1.101.11, 239.1.1.1), nh 172.16.255.3] rd:1:1 send:0
*Mar 27 12:29:00.956: MVPN: Received BGP prefix=[3:172.16.255.3 1:1 : (10.1.101.11,239.1.1.1)] len=23, nexthop: 172.16.255.3, router-id: 172.16.255.2, remote-rd: 1:1, Accept route
*Mar 27 12:29:00.956: MVPN: Received BGP prefix=[3:172.16.255.3 1:1 : (10.1.101.11,239.1.1.1)] len=23, nexthop: 172.16.255.3, router-id: 172.16.255.1, remote-rd: 1:1, Accept route
*Mar 27 12:29:00.956: MVPN: Received BGP update <104:0x00:50901>(172.16.254.3, 239.1.2.0) next_hop:172.16.255.3 router_id:172.16.255.2 RD:[1:1] Rmt-RD:[1:1] route type:3 <-- Received BGP update from source side VTEP
*Mar 27 12:29:00.956: MVPN: LSM AD route added [(10.1.101.11,239.1.1.1) : <104:0x00:50901>(172.16.254.3, 239.1.2.0)] orig:172.16.255.3 RD:[1:1] Rmt-RD:[1:1] rt:3 snd:0 <-- Adding the Data group
*Mar 27 12:29:00.957: MVPN(green[AF_IPv4]): Activating PE (172.16.255.3, 1:1) ad route refcnt:1 control plane refcnt: 0
*Mar 27 12:29:00.958: MVPN(green[AF_IPv4]): Successfully notified datamdt group for NVE (239.1.2.0, TRUE, FALSE) <-- Notify NVE of the DATA MDT
*Mar 27 12:29:00.958: MVPN: Received BGP update <104:0x00:50901>(172.16.254.3, 239.1.2.0) next_hop:172.16.255.3 router_id:172.16.255.1 RD:[1:1] Rmt-RD:[1:1] route type:3
Leaf-03#
疑難排解
未檢測到的組播源 |
| 在瞭解組播流無法正常運行的原因之前，瞭解ARP和組播轉發之間的關係非常重要 通常當主機變為活動狀態並傳送流量時，ARP條目會通過常規的源檢測過程完成。但是，對於組播源，源可能開始傳送流量，並且FHR的L2平面處理此組播流量，而不解析源的ARP。 ARP完成在TRM功能中扮演著重要角色，原因有二。
請確保ARP已解析，並且在EVPN交換矩陣中可訪問源。 |
其他有用的調試 |
| 本節中的其他調試有助於隔離TRM問題
|
交換矩陣外部的源和接收器 |
| 在某些情況下，源和/或接收方可以離開交換矩陣VTEP駐留一個或多個L3跳。 這是一個有效的設計，但會更改VRI承載的EVPN路由型別，以及負責在接收器VTEP上建立連線的過程。
|
eBGP多AS（主幹到主幹）拓撲 |
| 在某些情況下，拓撲可能要求BGP將更新資訊傳送到另一個AS/交換矩陣。 BGP控制平面資訊可能經過最多30秒，才能收斂，組播才能開始工作。
eBGP inter-as需要額外的命令 將inter-as 關鍵字用於MVPN地址系列路由，以跨BGP自治系統(AS)邊界。 Border-Leaf(config-vrf-af)#mdt auto-discovery vxlan inter-as |
具有對稱L2VNI的註冊通道（FHR停滯在PIM註冊狀態） |
| 如果VNI存在於FHR和其他VTEP上，則可能導致FHR停滯在「註冊」狀態 這是因為PIM註冊隧道源IP是AnyCast網關。當RP收到PIM暫存器時，它不知道哪個是傳送暫存器停止的正確VTEP，因為IP對於多個裝置是通用的。 PIM註冊通道路由問題 (Leaf-01)這是實際的FHR：向RP傳送註冊消息 Leaf-01#sh ip pim vrf green tunnel (Leaf-03)：此VTEP（可能還有其他）包含與FHR相同的SVI和IP地址 Leaf-03#sh ip pim vrf green tunnel (Leaf-01):FHR在註冊中仍然停滯不前（它不會從RP接收註冊停止） Leaf-01#show ip mroute vrf green 226.1.1.1 10.1.101.11 (Leaf-02)這是RP：在這種情況下，它還擁有與FHR相同的AnyCast IP，從而向自身傳送註冊停止。 如果RP沒有l2vni，但有2或3個其他vtep，註冊停止可能會傳送到錯誤的VTEP，因為RP無法選擇正確的VTEP。 Leaf-02#sh ip route vrf green 10.1.101.1 (Leaf-02):RP上的調試顯示RP將此路由作為本地連線路由的問題 Leaf-02#debug ip pim vrf green 226.1.1.1 PIM註冊通道路由問題解決方案 解決方案是在所有VTEP上使用唯一的環回IP，並使用本節所述的設定。 Leaf-01#sh run int lo 901 |
相關資訊
MVPN配置指南17.3.x（Catalyst 9300交換機）
修訂記錄
| 修訂 | 發佈日期 | 意見 |
|---|---|---|
3.0 |
17-May-2023 |
新增的資料MDT方案 |
2.0 |
10-Aug-2021 |
修復了一些次要的措辭問題 |
1.0 |
03-Jun-2021 |
初始版本 |
意見