排除多站点环境中的EVPN/VxLAN故障
目录
简介
本文档介绍如何在多站点环境中排除以太网VPN/虚拟可扩展局域网(EVPN/VxLAN)故障。
先决条件
要求
Cisco 建议您了解以下主题：
- 多协议标签交换(MPLS)第3层VPN
- 多协议边界网关协议(MP-BGP)
- EVPN
使用的组件
本文档中的信息基于以下软件和硬件版本：
| leaf1# | N5K-C5672UP-16G-SUP | 系统：版本7.3(0)N1(1) |
| leaf2# | N9K-C92160YC-X | NXOS：版本9.2(3) |
| spine1# | N9K-C9396PX | NXOS：版本9.2(3) |
| spine2# | N9K-C9396PX | NXOS：版本9.2(3) |
| MultisiteBG1# | N9K-C93108TC-EX | NXOS：版本9.2(3) |
| MultisiteBG2# | N9K-C-93108-FX | NXOS：版本9.3(1) |
| multisitespine2# | N9K-C9372TX-E | NXOS：版本9.2(3) |
| Multisastine1# | N9K-C92160YC-X | NXOS：版本9.2(3) |
| MultisetLeaf1# | N9K-C93108TC-EX | NXOS：版本7.0(3)I7(5) |
本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您的网络处于活动状态，请确保您了解所有命令的潜在影响。
拓扑
本文档介绍流量源自(DC-1、Host1/2 - 172.20.2.10/11)的位置，然后随数据包一起到达目的地DC-2、Host4(172.20.2.100)。
控制平面验证
通信流: 
步骤1:在源节点上检查正确的IP、VLAN。
ToLeaf1#show ip interface brief | exclude down Interface IP-Address OK? Method Status Protocol Vlan1000 172.20.2.10 YES NVRAM up up Vlan1001 172.21.1.10 YES NVRAM up up GigabitEthernet1/0/1 unassigned YES unset up up ToLeaf1#
现在，您可以从源节点访问其SVI-GW(Vlan-1000)。
ToLeaf1#ping 172.20.2.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.20.2.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/205/1006 ms ToLeaf1#
第二步：转到leaf1的第一跳，并检验第2层和第3层级别的内容。
现在查看leaf1是否从源节点获取mac和arp。
是，源节点的mac-address(0035.1ac1.37c2)和IP 172.20.2.10通过Vlan1000在eth1/23上获知。
leaf1#show mac address-table Legend: * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC age - seconds since last seen,+ - primary entry using vPC Peer-Link VLAN MAC Address Type age Secure NTFY Ports/SWID.SSID.LID ---------+-----------------+--------+---------+------+----+------------------ * 1001 0000.2222.3333 static 0 F F sup-eth2 * 1001 0035.1ac1.37c3 dynamic 500 F F Eth1/23 * 1001 005d.738e.a337 static 0 F F nve1/10.111.111.2 * 1001 00c8.8bf9.5f42 dynamic 0 F F nve1/10.111.111.2 * 1001 6cb2.ae91.38bf static 0 F F nve1/10.200.200.22 * 1001 e0d1.73a4.1d42 dynamic 0 F F nve1/192.168.1.4 * 1000 0000.2222.3333 static 0 F F sup-eth2 * 1000 0035.1ac1.37c2 dynamic 70 F F Eth1/23 * 1000 005d.738e.a337 static 0 F F nve1/10.111.111.2 * 1000 00c8.8bf9.5f41 dynamic 0 F F nve1/10.111.111.2 * 1000 6cb2.ae91.38bf static 0 F F nve1/10.200.200.22 * 1000 e0d1.73a4.1d41 dynamic 0 F F nve1/192.168.1.4 leaf1#
检验Source-Leaf中的ARP表
leaf1#show ip arp vrf all Flags: * - Adjacencies learnt on non-active FHRP router + - Adjacencies synced via CFSoE # - Adjacencies Throttled for Glean D - Static Adjacencies attached to down interface IP ARP Table for all contexts Total number of entries: 5 Address Age MAC Address Interface 172.21.1.10 00:08:14 0035.1ac1.37c3 Vlan1001 172.20.2.10 00:00:58 0035.1ac1.37c2 Vlan1000 10.31.121.1 00:08:14 2c31.24b0.bf46 mgmt0 172.16.1.1 00:07:51 0081.c41c.f007 Ethernet2/23 172.16.2.1 00:08:14 cc46.d68f.d74b Ethernet2/24 leaf1#
这显示了leaf1如何获取消息以生成源节点的IP/mac条目。
leaf1#show system internal l2rib event-history mac | i 0035.1ac1.37c2 | be create [04/24/20 13:10:09.721 UTC 6 4173] (1000,0035.1ac1.37c2,3):MAC route created with seq num:0, flags:L (), soo:0, peerid:0 [04/24/20 13:10:09.732 UTC c 4173] (1000,0035.1ac1.37c2,3):Encoding MAC best route (ADD, client id 4) [04/24/20 13:10:09.871 UTC e 4173] (1000,0035.1ac1.37c2):Bound MAC-IP(172.20.2.10) to MAC, Total MAC-IP linked: 1 [04/24/20 13:10:42.651 UTC 1a 4173] Received MAC ROUTE msg: addr: (1000-0035.1ac1.37c2) vni: 0 admin_dist: 0 seq_num: 0 rt_flags: L soo: 0 dg_count: 0 res: 0 esi: (F) nh_count: 1 [04/24/20 13:10:42.651 UTC 1c 4173] (1000,0035.1ac1.37c2):Mobility check for new rte from prod: 3 [04/24/20 13:10:42.651 UTC 1d 4173] (1000,0035.1ac1.37c2):Current non-del-pending route local:yes, remote:no, linked mac-ip count:1 [04/24/20 13:10:42.651 UTC 1e 4173] (1000,0035.1ac1.37c2):Mobility type: local-to-local; New route SOO: 0, Seq num: 0; Existing route SOO: 0, Seq num: 0 [04/24/20 13:10:42.651 UTC 1f 4173] (1000,0035.1ac1.37c2):Local Update, Add to DB [04/24/20 13:10:42.651 UTC 20 4173] (1000,0035.1ac1.37c2,3):Using seq number from Recv-based route <........snipped for brevity...........> leaf1#
一旦您验证了leaf1中的mac/IP条目是如何产生的，这就是mac/mac-ip信息与BGP绑定并通告为l2vpn/evpn路由的重要观察点之一。
leaf1#show bgp l2vpn evpn 0035.1ac1.37c2 Route Distinguisher: 192.168.1.3:33767 (L2VNI 2001002) BGP routing table entry for [2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216, version 99 Paths: (1 available, best #1) Flags: (0x00010a) on xmit-list, is not in l2rib/evpn Advertised path-id 1 Path type: local, path is valid, is best path AS-Path: NONE, path locally originated 192.168.1.3 (metric 0) from 0.0.0.0 (192.168.1.3) Origin IGP, MED not set, localpref 100, weight 32768 Received label 2001002 Extcommunity: RT:200:2001002 Path-id 1 advertised to peers: <<<<<<<<<<<<<<<<< Here we see MAC address is advertised as mac-only route to its SPINE peers 192.168.1.1 192.168.1.2 BGP routing table entry for [2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272, version 4 Paths: (1 available, best #1) Flags: (0x00010a) on xmit-list, is not in l2rib/evpn Advertised path-id 1 Path type: local, path is valid, is best path AS-Path: NONE, path locally originated 192.168.1.3 (metric 0) from 0.0.0.0 (192.168.1.3) Origin IGP, MED not set, localpref 100, weight 32768 Received label 2001002 900001 Extcommunity: RT:200:900001 RT:200:2001002 Path-id 1 advertised to peers: <<<<<<<<<<<<<<<<< Here we see MAC address is advertised as mac-IP route to its SPINE peers 192.168.1.1 192.168.1.2 leaf1#
现在检查从枝叶到主干的通告的外观。
DC-1 Leaf1到Spine1的路由验证
leaf1#show bgp l2vpn evpn neighbors 192.168.1.1 advertised-routes Peer 192.168.1.1 routes for address family L2VPN EVPN: BGP table version is 191, local router ID is 192.168.1.3 Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 10.100.100.21:33767 Route Distinguisher: 10.100.100.21:33768 Route Distinguisher: 10.100.100.22:33767 Route Distinguisher: 10.100.100.22:33768 Route Distinguisher: 192.168.1.3:33767 (L2VNI 2001002) *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 192.168.1.3 100 32768 i *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 192.168.1.3 100 32768 i Route Distinguisher: 192.168.1.3:33768 (L2VNI 2001001) *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216 192.168.1.3 100 32768 i *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272 192.168.1.3 100 32768 i Route Distinguisher: 192.168.1.4:33767 Route Distinguisher: 192.168.1.4:33768 Route Distinguisher: 192.168.2.4:33767 Route Distinguisher: 192.168.2.4:33768 Route Distinguisher: 192.168.1.3:3 (L3VNI 900001) leaf1#
DC-1 Leaf1到Spine2的路由验证
leaf1#show bgp l2vpn evpn neighbors 192.168.1.2 advertised-routes Peer 192.168.1.2 routes for address family L2VPN EVPN: BGP table version is 191, local router ID is 192.168.1.3 Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 10.100.100.21:33767 Route Distinguisher: 10.100.100.21:33768 Route Distinguisher: 10.100.100.22:33767 Route Distinguisher: 10.100.100.22:33768 Route Distinguisher: 192.168.1.3:33767 (L2VNI 2001002) *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 192.168.1.3 100 32768 i *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 192.168.1.3 100 32768 i Route Distinguisher: 192.168.1.3:33768 (L2VNI 2001001) *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216 192.168.1.3 100 32768 i *>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272 192.168.1.3 100 32768 i Route Distinguisher: 192.168.1.4:33767 Route Distinguisher: 192.168.1.4:33768 Route Distinguisher: 192.168.2.4:33767 Route Distinguisher: 192.168.2.4:33768 Route Distinguisher: 192.168.1.3:3 (L3VNI 900001) leaf1#
由于有多条主干，请检查不同主干上的不同命令以确认（保持路由更新不变）。
在DC-1中，SPINE-1和SPINE-2与Leaf1、Leaf2和BGW-1具有EVPN邻居关系
spine1#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 192.168.1.1, local AS number 200 BGP table version is 31, L2VPN EVPN config peers 3, capable peers 3 19 network entries and 19 paths using 4256 bytes of memory BGP attribute entries [17/2788], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [0/0] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.100.100.22 4 200 44002 43993 31 0 0 4w2d 11 192.168.1.3 4 200 43991 43989 31 0 0 4w2d 4 192.168.1.4 4 200 43996 43992 31 0 0 4w2d 4 spine1# spine2#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 192.168.1.2, local AS number 200 BGP table version is 65, L2VPN EVPN config peers 3, capable peers 3 19 network entries and 19 paths using 4256 bytes of memory BGP attribute entries [17/2788], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [0/0] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.100.100.22 4 200 47140 47115 65 0 0 4w4d 11 192.168.1.3 4 200 47115 47112 65 0 0 4w4d 4 192.168.1.4 4 200 47121 47116 65 0 0 4w4d 4 spine2#
到目前为止，您已经到达了SPINE层，现在请看这是否传递到边界网关(DC-1、BGW-1)。
spine2#show bgp l2vpn evpn neighbors 10.100.100.22 advertised-routes
Peer 10.100.100.22 routes for address family L2VPN EVPN:
BGP table version is 65, Local Router ID is 192.168.1.2
Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best
Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected
Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - best2
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 10.100.100.21:33767
Route Distinguisher: 10.100.100.21:33768
Route Distinguisher: 10.100.100.22:27001
Route Distinguisher: 10.100.100.22:33767
Route Distinguisher: 10.100.100.22:33768
Route Distinguisher: 192.168.1.3:33767
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216
192.168.1.3 100 0 i
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272
192.168.1.3 100 0 i
Route Distinguisher: 192.168.1.3:33768
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216
192.168.1.3 100 0 i
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272
192.168.1.3 100 0 i
Route Distinguisher: 192.168.1.4:33767
*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[0]:[0.0.0.0]/216
192.168.1.4 100 0 i
*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[32]:[172.20.2.11]/272
192.168.1.4 100 0 i
Route Distinguisher: 192.168.1.4:33768
*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[0]:[0.0.0.0]/216
192.168.1.4 100 0 i
*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[32]:[172.21.1.11]/272
192.168.1.4 100 0 i
Route Distinguisher: 192.168.2.4:33767
Route Distinguisher: 192.168.2.4:33768
spine2#
<<<<<<<<<
>>>>>>
spine2#show bgp l2vpn evpn neighbors 10.100.100.22 advertised-routes | i 0035.1ac1.37c2 p 1 n 1
Route Distinguisher: 192.168.1.3:33767
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216
192.168.1.3 100 0 i
*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272
192.168.1.3 100 0 i
spine2#
在DC-1的BORDER层进行验证，路由将从该层传播到其他站点。
然后，您可以看到在BGW-1中交换了哪些路由器、哪些路由类型以及有多少路由
DC-1 BGW-1
MultisiteBG1#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 10.100.100.22, local AS number 200 BGP table version is 233, L2VPN EVPN config peers 3, capable peers 3 37 network entries and 45 paths using 7296 bytes of memory BGP attribute entries [37/6068], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [4/16] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.100.100.21 4 100 47145 47121 233 0 0 4w4d 8 192.168.1.1 4 200 47153 47125 233 0 0 18:52:35 8 192.168.1.2 4 200 47139 47119 233 0 0 4w4d 8 Neighbor T AS PfxRcd Type-2 Type-3 Type-4 Type-5 10.100.100.21 E 100 8 6 2 0 0 192.168.1.1 I 200 8 8 0 0 0 192.168.1.2 I 200 8 8 0 0 0 MultisiteBG1# MultisiteBG1#show bgp l2vpn evpn neighbors 10.100.100.21 advertised-routes Peer 10.100.100.21 routes for address family L2VPN EVPN: BGP table version is 233, Local Router ID is 10.100.100.22 Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - best2 Network Next Hop Metric LocPrf Weight Path Route Distinguisher: 10.100.100.21:33767 Route Distinguisher: 10.100.100.21:33768 Route Distinguisher: 10.100.100.22:27001 (ES [0300.0000.0000.c800.0309 0]) *>l[4]:[0300.0000.0000.c800.0309]:[32]:[10.200.200.22]/136 10.200.200.22 100 32768 i Route Distinguisher: 10.100.100.22:33767 (L2VNI 2001002) *>l[2]:[0]:[0]:[48]:[6cb2.ae91.38bf]:[0]:[0.0.0.0]/216 10.200.200.22 100 32768 i *>l[3]:[0]:[32]:[10.200.200.22]/88 10.200.200.22 100 32768 i Route Distinguisher: 10.100.100.22:33768 (L2VNI 2001001) *>l[2]:[0]:[0]:[48]:[6cb2.ae91.38bf]:[0]:[0.0.0.0]/216 10.200.200.22 100 32768 i *>l[3]:[0]:[32]:[10.200.200.22]/88 10.200.200.22 100 32768 i Route Distinguisher: 192.168.1.3:33767 *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 192.168.1.3 100 0 i *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 192.168.1.3 100 0 i Route Distinguisher: 192.168.1.3:33768 *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216 192.168.1.3 100 0 i *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272 192.168.1.3 100 0 i Route Distinguisher: 192.168.1.4:33767 *>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[0]:[0.0.0.0]/216 192.168.1.4 100 0 i *>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[32]:[172.20.2.11]/272 192.168.1.4 100 0 i Route Distinguisher: 192.168.1.4:33768 *>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[0]:[0.0.0.0]/216 192.168.1.4 100 0 i *>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[32]:[172.21.1.11]/272 192.168.1.4 100 0 i Route Distinguisher: 192.168.2.4:33767 Route Distinguisher: 192.168.2.4:33768 MultisiteBG1# MultisiteBG1#show bgp l2vpn evpn neighbors 10.100.100.21 advertised-routes | i 0035.1ac1.37c2 p 1 n 1 Route Distinguisher: 192.168.1.3:33767 *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 192.168.1.3 100 0 i *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 192.168.1.3 100 0 i MultisiteBG1#
在DC-2/BGW-2上收到路由后，您确实可以看到路由通告到其连接的SPINE-1(192.168.2.1)
DC-2 BGW-2
MultisiteBG2#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 10.100.100.21, local AS number 100 BGP table version is 142, L2VPN EVPN config peers 3, capable peers 2 43 network entries and 43 paths using 7680 bytes of memory BGP attribute entries [33/5412], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [1/4] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.100.100.22 4 200 47169 47124 142 0 0 4w4d 12 192.168.2.1 4 100 47136 47124 142 0 0 4w4d 4 192.168.2.2 4 100 45969 45963 0 0 0 19:21:40 Idle Neighbor T AS PfxRcd Type-2 Type-3 Type-4 Type-5 10.100.100.22 E 200 12 10 2 0 0 192.168.2.1 I 100 4 4 0 0 0 192.168.2.2 I 100 Idle 0 0 0 0 MultisiteBG2# MultisiteBG2#show bgp l2vpn evpn neighbors 192.168.2.1 advertised-routes | i 0035.1ac1.37c2 p 1 n 1 Route Distinguisher: 192.168.1.3:33767 *>e[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 10.111.111.2 2000 0 200 i *>e[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 10.111.111.2 2000 0 200 i MultisiteBG2#
路由会进一步通告到目标所连接的DC-2、枝叶–1。
DC-2主干到枝叶路由通告
Multistespine1#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 192.168.2.1, local AS number 100 BGP table version is 50, L2VPN EVPN config peers 3, capable peers 2 19 network entries and 19 paths using 4256 bytes of memory BGP attribute entries [15/2460], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [0/0] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.100.100.21 4 100 47152 47131 50 0 0 4w4d 15 192.168.2.3 4 100 0 0 0 0 0 4w4d Idle 192.168.2.4 4 100 47135 47131 50 0 0 4w4d 4 Multistespine1# Multistespine1#show bgp l2vpn evpn neighbors 192.168.2.4 advertised-routes | i 0035.1ac1.37c2 p 1 n 1 Route Distinguisher: 192.168.1.3:33767 *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216 10.111.111.1 2000 100 0 200 i *>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272 10.111.111.1 2000 100 0 200 i Multistespine1#
现在，您可以看到，第2层拓扑已从DC-1、枝叶–1扩展到DC-2、枝叶–1。
DC-2枝叶–1验证
MultisteLeaf1#show bgp l2vpn evpn summary BGP summary information for VRF default, address family L2VPN EVPN BGP router identifier 192.168.2.4, local AS number 100 BGP table version is 188, L2VPN EVPN config peers 2, capable peers 1 36 network entries and 36 paths using 6120 bytes of memory BGP attribute entries [16/2560], BGP AS path entries [1/6] BGP community entries [0/0], BGP clusterlist entries [1/4] Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 192.168.2.1 4 100 47152 47133 188 0 0 4w4d 14 192.168.2.2 4 100 45981 45968 0 0 0 19:26:17 Idle MultisteLeaf1# MultisteLeaf1#show mac address-table Legend: * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC age - seconds since last seen,+ - primary entry using vPC Peer-Link, (T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan VLAN MAC Address Type age Secure NTFY Ports ---------+-----------------+--------+---------+------+----+------------------ * 1 00c8.8bf9.5f01 dynamic 0 F F Eth1/16 * 101 00be.75f4.544d static - F F Vlan101 * 101 0200.0a6f.6f01 static - F F nve1(10.111.111.1) C 1000 0035.1ac1.37c2 dynamic 0 F F nve1(10.111.111.1) <<<<<<<<<<<<<<<<<< * 1000 00c8.8bf9.5f41 dynamic 0 F F Eth1/16 C 1000 e0d1.73a4.1d41 dynamic 0 F F nve1(10.111.111.1) C 1001 0035.1ac1.37c3 dynamic 0 F F nve1(10.111.111.1) * 1001 00c8.8bf9.5f42 dynamic 0 F F Eth1/16 C 1001 e0d1.73a4.1d42 dynamic 0 F F nve1(10.111.111.1) G - 0000.2222.3333 static - F F sup-eth1(R) G - 00be.75f4.544d static - F F sup-eth1(R) G 101 00be.75f4.544d static - F F sup-eth1(R) G 1000 00be.75f4.544d static - F F sup-eth1(R) G 1001 00be.75f4.544d static - F F sup-eth1(R) MultisteLeaf1#
DC-2、Leaf-1通过Vlan1000学习主机4 Mac。
MultisteLeaf1#show ip arp vrf vxlan-900001 Flags: * - Adjacencies learnt on non-active FHRP router + - Adjacencies synced via CFSoE # - Adjacencies Throttled for Glean CP - Added via L2RIB, Control plane Adjacencies PS - Added via L2RIB, Peer Sync RO - Re-Originated Peer Sync Entry D - Static Adjacencies attached to down interface IP ARP Table for context vxlan-900001 Total number of entries: 2 Address Age MAC Address Interface Flags 172.21.1.100 00:04:09 00c8.8bf9.5f42 Vlan1001 172.20.2.100 00:04:09 00c8.8bf9.5f41 Vlan1000 MultisteLeaf1#
数据平面故障排除
在多台设备上测试数据计划验证，以了解不同的数据包捕获方法和变体。
在本例中，放大作为目标枝叶的N5K。
SOURCE: 172.20.2.100 (Host-4) DESTINATION: 172.20.2.10 (Host-1)
对Source-Host4的基本检查
toMultisiteLeaf1#show ip interface brief | exclude down Interface IP-Address OK? Method Status Protocol Vlan1000 172.20.2.100 YES NVRAM up up Vlan1001 172.21.1.100 YES NVRAM up up GigabitEthernet2/0/1 unassigned YES unset up up toMultisiteLeaf1# INTIATE A PING TO HOST-1: toMultisiteLeaf1#ping 172.20.2.10 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.20.2.10, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/8 ms toMultisiteLeaf1#
目标枝叶1检查
leaf1#show cdp neighbors Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge S - Switch, H - Host, I - IGMP, r - Repeater, V - VoIP-Phone, D - Remotely-Managed-Device, s - Supports-STP-Dispute Device-ID Local Intrfce Hldtme Capability Platform Port ID MX066-H-01-SW.cisco.com mgmt0 178 S I WS-C2960X-48TS-L Gig1/0/26 ToLeaf1 Eth1/23 132 S I WS-C3750X-24S Gig1/0/1 <<<<<<<<<<<<<<<<< To DC-1/Host-1 spine1(SAL2024RRYF) Eth2/23 136 R S s N9K-C9372PX-E Eth1/3 spine2(SAL1949UELD) Eth2/24 138 R S s N9K-C9396PX Eth1/7 leaf1# leaf1# leaf1#show module Mod Ports Module-Type Model Status --- ----- ----------------------------------- ---------------------- ----------- 0 0 Nexus 72UP 16GFC Supervisor N5K-C5672UP-16G-SUP active * 1 24 Nexus 24xSFP Ethernet Module N5600-72UP16GFC ok <<<<<<<<<<<<<<<<< To DC-1/Host-1 2 24 Nexus 24xSFP Ethernet/FC Module N5600-72UP16GFC-FC ok 3 6 Nexus 6xQSFP Ethernet Module N5600-72UP16GFC-M6Q ok Mod Sw Hw World-Wide-Name(s) (WWN) --- -------------- ------ --------------------------------------------------- 0 7.3(0)N1(1) 1.5 -- 1 7.3(0)N1(1) 1.5 -- 2 7.3(0)N1(1) 1.5 -- 3 7.3(0)N1(1) 1.5 -- Mod MAC-Address(es) Serial-Num --- -------------------------------------- ---------- 0 00de.fb01.9f88 to 00de.fb01.9f88 FOC20162AGC 1 00de.fb01.9f88 to 00de.fb01.9f9f FOC20162AGC 2 00de.fb01.9fa0 to 00de.fb01.9fb7 FOC20162AGC 3 00de.fb01.9fb8 to 00de.fb01.9fcf FOC20162AGC leaf1#
现在了解如何检查asic/实例映射。
leaf1#show platform fwm info pif eth1/23 | i i slot_asic Eth1/23 pd: slot 0 logical port num 22 slot_asic_num 1 global_asic_num 2 fw_inst 10 phy_fw_inst 2 fc 0 leaf1# leaf1#show hardware internal bigsur all-ports | i "asic|idx|1/23" Port |asic|inst|inst| name |idx |slot|asic|eport|logi|flag|adm|opr|if_index|diag|ucVer 1gb1/23 |2 |0 |1 |10 p |22 |b3 |en |up |1a016000|pass| 0.00 leaf1#
在这里您可以看到从枝叶1出口到主机1的数据包。
leaf1#elam slot 1 asic bigsur instance 1 leaf1(bigsur-elam)#trigger lu egress ipv4 if destination-ipv4-address_ipv4 172.20.2.10 leaf1(bigsur-elam)#start capture leaf1(bigsur-elam)#show capture lu Egress Interface: Ethernet1/23 IS NOT A PC <<<<<<<<<<<<<<<<< ELAM is smart, we have a catalyst switch as HOST-1 :-) +-----------------------------------------+ | Lookup Vector | +--------------------+--------------------+ | Field | Raw Value | +--------------------+--------------------+ | SID | 21 | | PKT_ID | 13 | | TUN_VLD | 0 | | TUN_TYPE | 0 | | TUN_IF | 0 | | TUN_INST | 0 | | ERSPAN_TERM_VLD | 0 | | ERSPAN_DST_IF_IDX | 0 | | L2MP_VLD | 1 | | TRILL_ODA | 0x000000000000 | | TRILL_OQTAG_VLD | 0 | | TRILL_OQTAG_DE | 0 | | TRILL_DCE_FTAG_VLD | 0 | | TRILL_DCE_LID_VLD | 0 | | TRILL_VRM | 0 | | TRILL_OPT_VLD | 0 | | TRILL_OPT_BYTE0 | 0 | | CDCE_DA | 0x020abc000004 | | CDCE_SA | 0x022001000000 | | CDCE_DTAG_ETYPE | 0x0200 | | CDCE_DTAG_TTL | 32 | | CDCE_DTAG_FTAG | 2 | | NSH_WORD2 | 0x3e70080 | | CE_DA | 0x00351ac137c2 |<<<<<<<<<<<<<<<<< Destination Mac address (Host-1 172.20.2.10) | CE_SA | 0x00c88bf95f41 |<<<<<<<<<<<<<<<<< Source Mac address (Host-4 172.20.2.100) | VNIC_VLD | 0 | | CE_1Q_NUM | 1 | | INT_VLAN | 999 | | IP_RESV_0 | 0 | | FCOE_VLD | 0 | | MPLS_VLD | 0 | | VEC_TYPE | 0 | | TRILL_OSA | 0x000000000000 | | CMD_SGT_VLD | 0 | | CMD_SGT | 0 | | CMD_DGT_VLD | 0 | | CMD_DGT | 0 | | HDRP_SNAP | 0 | | L3_IPV6 | 0 | | L3_SA | 172.20.2.100 |<<<<<<<<<<<<<<<<< Source IP | L3_DA | 172.20.2.10 |<<<<<<<<<<<<<<<<< Destination IP | L3_TOS | 0 | | L3_FRAG | 0 | | L3_MF | 0 | | L3_TTL | 255 | | L3_OPT_NONE | 0 | | L3_NONE_HBH | 0 | | L3_NONE_ROUTE | 0 | | L3_NONE_FRAG | 0 | | L3_NONE_DEST | 0 | | L3_AH | 0 | | L3_ESP | 0 | | L3_PROT | 1 |<<<<<<<<<<<<<<<<< ICMP | L3_LENGTH | 100 | | MAX_IPV6_HBH | 0 | | MAX_IPV6_FRAG | 0 | | L4_TCP_UDP | 0 | | IP_RESV_1 | 0 | +--------------------+--------------------+ | PYLD_LEN | 4 | | PARSE_ERR | 0 | | PARSE_UNEXP | 0 | | ECN_DROP | 0 | | IDS_FAIL | 0 | | IDS_CODE | 0 | | LKUP_SPARE | 0 | +--------------------+--------------------+ leaf1(bigsur-elam)#
现在您可以了解如何捕获N5K上的数据包，让我们放大N9K。
您可以从Host-4开始，对Host-2执行简单ping操作。虽然它是枝叶交换机的中转流量，但仍可检查您是否能够正确处理这些数据包。在DC-1/Leaf-2确认。
为了确认，请监控接口eth-1/23，并将这些数据包传送到CPU并运行ethanalyzer/dmirror进行确认。
配置监控器会话
leaf2#configure terminal leaf2(config)#monitor session 1 leaf2(config-monitor)#source interface ethernet 1/23 leaf2(config-monitor)#destination interface sup-eth 0 leaf2(config-monitor)#no shut leaf2(config-monitor)#exit toMultisiteLeaf1#ping 172.20.2.11 repeat 2 Type escape sequence to abort. Sending 2, 100-byte ICMP Echos to 172.20.2.11, timeout is 2 seconds: !! Success rate is 100 percent (2/2), round-trip min/avg/max = 1/1/1 ms toMultisiteLeaf1#
leaf2#ethanalyzer local interface inband mirror Capturing on inband 2020-05-27 12:20:57.081654 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request 2020-05-27 12:20:57.082193 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply 2020-05-27 12:20:57.084902 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request 2020-05-27 12:20:57.087406 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply 4 packets captured leaf2# leaf2#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0 Capturing on inband 2020-05-27 12:20:57.081654 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request 2020-05-27 12:20:57.082193 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply 2020-05-27 12:20:57.084902 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request 2020-05-27 12:20:57.087406 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply 4 packets captured leaf2#
如果要从源发送某些数据并在目标枝叶上捕获，请执行以下步骤：
- 从Host-4向Host-2发起ping。
- 源：172.20.2.100 //源MAC地址：00:C8:8B:F9:5F:41
- 目的：172.20.2.11 //目的MAC地址：E0:D1:73:A4:1D:41
- 数据包大小：777
- Do-Not-Fragment：是
- 数据模式字符串：牛肉
在本例中，您拥有足够的数据包计数，因此您可以在源枝叶和目的枝叶上捕获数据包。
toMultisiteLeaf1#ping 172.20.2.11 repeat 200000 data beef df-bit validate size 777 Type escape sequence to abort. Sending 200000, 777-byte ICMP Echos to 172.20.2.11, timeout is 2 seconds: Packet sent with the DF bit set Packet has data pattern 0xBEEF Reply data will be validated !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <...................> !!!!!!!!!!!!!!!!!!!!!!!!!! Success rate is 100 percent (7376/7376), round-trip min/avg/max = 1/5/151 ms toMultisiteLeaf1#
第一跳DC-2、枝叶1的基本检查
MultisteLeaf1#show module Mod Ports Module-Type Model Status --- ----- ------------------------------------- --------------------- --------- 1 54 48x10GT + 6x40G/100G Ethernet Module N9K-C93108TC-EX active * Mod Sw Hw Slot --- ---------------- ------ ---- 1 7.0(3)I7(5) 1.3 NA Mod MAC-Address(es) Serial-Num --- -------------------------------------- ---------- 1 00-be-75-f4-54-46 to 00-be-75-f4-54-95 FDO220225UX Mod Online Diag Status --- ------------------ 1 Pass * this terminal session MultisteLeaf1# MultisteLeaf1#show cdp neighbors Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge S - Switch, H - Host, I - IGMP, r - Repeater, V - VoIP-Phone, D - Remotely-Managed-Device, s - Supports-STP-Dispute Device-ID Local Intrfce Hldtme Capability Platform Port ID MX066-H-03-SW.cisco.com mgmt0 141 S I WS-C2960X-48T Gig1/0/31 Multistespine1(FDO22150SJZ) Eth1/6 142 R S s N9K-C92160YC- Eth1/47 toMultisiteLeaf1 Eth1/16 128 R S I WS-C3750X-24S Gig2/0/1 <<<<<<<<<<<< Towards Host-4 Total entries displayed: 3 MultisteLeaf1# MultisteLeaf1#show hardware internal tah interface et1/16 ######################################### IfIndex: 0x1a001e00 DstIndex: 6084 IfType: 26 Asic: 0 Asic: 0 <<<<<<<<<<<<<<<<< AsicPort: 11 SrcId: 22 <<<<<<<<<<<<<<<<< Slice: 0 <<<<<<<<<<<<<<<<< PortOnSlice: 11 Table entries for interface Ethernet1/16 <........snipped for brevity...........>
MultisteLeaf1#show system internal ethpm info interface ethernet 1/16 | grep slice IF_STATIC_INFO: port_name=Ethernet1/16,if_index:0x1a001e00,ltl=6084,slot=0, nxos_port=60,dmod=1,dpid=11,unit=0,queue=65535,xbar_unitbmp=0x0,ns_pid=255,slice_num=0,port_on_slice=11,src_id=22 MultisteLeaf1#
在硬件级别检查是否真正接收了来自Host-4的数据包。
MultisteLeaf1#attach module 1 module-1#debug platform internal tah elam asic 0 module-1(TAH-elam)#trigger init asic 0 slice 0 in-select 6 out-select 0 use-src-id 22 param values: start asic 0, start slice 0, lu-a2d 1, in-select 6, out-select 0, src_id 22 module-1(TAH-elam-insel6)#start module-1(TAH-elam-insel6)#report Initting block addresses SUGARBOWL ELAM REPORT SUMMARY slot - 1, asic - 0, slice - 0 ============================ Incoming Interface: Eth1/16 Src Idx : 0x3d, Src BD : 1000 Outgoing Interface Info: dmod 1, dpid 17 Dst Idx : 0x15, Dst BD : 1000 Packet Type: IPv4 Dst MAC address: E0:D1:73:A4:1D:41 Src MAC address: 00:C8:8B:F9:5F:41 .1q Tag0 VLAN: 1000, cos = 0x0 Dst IPv4 address: 172.20.2.11 Src IPv4 address: 172.20.2.100 Ver = 4, DSCP = 0, Don't Fragment = 1 Proto = 1, TTL = 255, More Fragments = 0 Hdr len = 20, Pkt len = 777, Checksum = 0xcffe L4 Protocol : 1 ICMP type : 8 ICMP code : 0 Drop Info: ---------- LUA: LUB: LUC: LUD: Final Drops: module-1(TAH-elam-insel6)# exit module-1(TAH-elam)# exit module-1# exit MultisteLeaf1#
如果要将其视为pcap，请让其持续ping，监控会话在源枝叶和目标枝叶上配置。
监控源枝叶上的会话
MultisteLeaf1#show run | section monitor monitor session 1 source interface Ethernet1/16 both destination interface sup-eth0 no shut MultisteLeaf1#
监控目标枝叶上的会话
leaf2(config)#show run | section monitor monitor session 1 source interface Ethernet1/23 both destination interface sup-eth0 no shut leaf2(config)#
在源枝叶上捕获
MultisteLeaf1#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0 detail Capturing on inband Frame 1 (791 bytes on wire, 791 bytes captured) Arrival Time: May 31, 2020 15:44:46.767411000 [Time delta from previous captured frame: 0.000000000 seconds] [Time delta from previous displayed frame: 0.000000000 seconds] [Time since reference or first frame: 0.000000000 seconds] Frame Number: 1 Frame Length: 791 bytes Capture Length: 791 bytes [Frame is marked: False] [Protocols in frame: eth:ip:icmp:data] Ethernet II, Src: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41), Dst: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Destination: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: IP (0x0800) Internet Protocol, Src: 172.20.2.11 (172.20.2.11), Dst: 172.20.2.100 (172.20.2.100) <<<<<<<<<<<<<<<<<<<<< RETURN TRAFFIC (ICMP RESPONSE) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE IS 777 Identification: 0xaf53 (44883) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< DF-BIT IS SET ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xbd2d [correct] [Good: True] [Bad : False] Source: 172.20.2.11 (172.20.2.11) Destination: 172.20.2.100 (172.20.2.100) Internet Control Message Protocol Type: 0 (Echo (ping) reply) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PING RESPONSE Code: 0 () Checksum: 0x78f3 [correct] Identifier: 0x001c Sequence number: 7412 (0x1cf4) Data (749 bytes) 0000 00 00 00 00 14 67 5f 13 be ef be ef be ef be ef .....g_......... <<<<<<<<<<<<<<<<<< you see the data pattern as "beef" 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0200 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0210 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0220 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0230 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0240 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0250 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0260 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0270 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0280 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0290 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02e0 be ef be ef be ef be ef be ef be ef 00 ............. Data: 0000000014675F13BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF... [Length: 749] Frame 2 (795 bytes on wire, 795 bytes captured) Arrival Time: May 31, 2020 15:44:46.802363000 [Time delta from previous captured frame: 0.034952000 seconds] [Time delta from previous displayed frame: 0.034952000 seconds] [Time since reference or first frame: 0.034952000 seconds] Frame Number: 2 Frame Length: 795 bytes Capture Length: 795 bytes [Frame is marked: False] [Protocols in frame: eth:vlan:ip:icmp:data] Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: 802.1Q Virtual LAN (0x8100) 802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000 000. .... .... .... = Priority: 0 ...0 .... .... .... = CFI: 0 .... 0011 1110 1000 = ID: 1000 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< VLAN-ID Type: IP (0x0800) Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) <<<<<<<<<<<<<<<<<<<<< FORWARD TRAFFIC (ICMP REQUEST) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE Identification: 0xaf59 (44889) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xbd27 [correct] [Good: True] [Bad : False] Source: 172.20.2.100 (172.20.2.100) Destination: 172.20.2.11 (172.20.2.11) Internet Control Message Protocol Type: 8 (Echo (ping) request) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ICMP REQUEST Code: 0 () Checksum: 0x70aa [correct] Identifier: 0x001c Sequence number: 7418 (0x1cfa) Data (749 bytes) 0000 00 00 00 00 14 67 5f 56 be ef be ef be ef be ef .....g_V........ <<<<<<<<<<<<<<<<<<<<< DATA PATTER AS CONFIGURED (beef) 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0200 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0210 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0220 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0230 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0240 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0250 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0260 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0270 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0280 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0290 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02e0 be ef be ef be ef be ef be ef be ef 00 ............. Data: 0000000014675F56BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF... [Length: 749] <.................> <.................> Frame 3 (795 bytes on wire, 795 bytes captured) Arrival Time: May 31, 2020 15:44:46.840861000 [Time delta from previous captured frame: 0.038498000 seconds] [Time delta from previous displayed frame: 0.038498000 seconds] [Time since reference or first frame: 0.073450000 seconds] Frame Number: 3 Frame Length: 795 bytes Capture Length: 795 bytes [Frame is marked: False] [Protocols in frame: eth:vlan:ip:icmp:data] Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: 802.1Q Virtual LAN (0x8100) 802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000 000. .... .... .... = Priority: 0 ...0 .... .... .... = CFI: 0 .... 0011 1110 1000 = ID: 1000 <<<<<<<<<<<<<<<<<<<<< VLAN-ID Type: IP (0x0800) Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) <<<<<<<<<<<<<<<<<<<<< FORWARD TRAFFIC (ICMP REQUEST) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 <<<<<<<<<<<<<<<<<<<<< PACKET SIZE Identification: 0xaf60 (44896) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xbd20 [correct] [Good: True] [Bad : False] Source: 172.20.2.100 (172.20.2.100) Destination: 172.20.2.11 (172.20.2.11) Internet Control Message Protocol Type: 8 (Echo (ping) request) <<<<<<<<<<<<<<<<<<<<< ICMP REQUEST Code: 0 () Checksum: 0x7081 [correct] Identifier: 0x001c Sequence number: 7425 (0x1d01) Data (749 bytes) 0000 00 00 00 00 14 67 5f 78 be ef be ef be ef be ef .....g_x........ <<<<<<<<<<<<<<<<<<<<< DATA PATTER AS CONFIGURED (beef) 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0200 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0210 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0220 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0230 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0240 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0250 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0260 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0270 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0280 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0290 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02e0 be ef be ef be ef be ef be ef be ef 00 ............. Data: 0000000014675F78BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF... [Length: 749] Frame 4 (795 bytes on wire, 795 bytes captured) Arrival Time: May 31, 2020 15:44:46.888728000 [Time delta from previous captured frame: 0.047867000 seconds] [Time delta from previous displayed frame: 0.047867000 seconds] [Time since reference or first frame: 0.121317000 seconds] Frame Number: 4 Frame Length: 795 bytes Capture Length: 795 bytes [Frame is marked: False] [Protocols in frame: eth:vlan:ip:icmp:data] Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: 802.1Q Virtual LAN (0x8100) 802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000 000. .... .... .... = Priority: 0 ...0 .... .... .... = CFI: 0 .... 0011 1110 1000 = ID: 1000 Type: IP (0x0800) Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 Identification: 0xaf65 (44901) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xbd1b [correct] [Good: True] [Bad : False] Source: 172.20.2.100 (172.20.2.100) Destination: 172.20.2.11 (172.20.2.11) Internet Control Message Protocol Type: 8 (Echo (ping) request) Code: 0 () Checksum: 0x704a [correct] Identifier: 0x001c Sequence number: 7430 (0x1d06) Data (749 bytes) 0000 00 00 00 00 14 67 5f aa be ef be ef be ef be ef .....g_......... 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ MultisteLeaf1#
对最后一跳DC-1、枝叶–2的基本检查
leaf2#show module Mod Ports Module-Type Model Status --- ----- ------------------------------------- --------------------- --------- 1 54 48x10G + 4x40G + 2x100G Ethernet Modu N9K-C92160YC-X active * Mod Sw Hw Slot --- ----------------------- ------ ---- 1 9.2(3) 1.3 NA Mod MAC-Address(es) Serial-Num --- -------------------------------------- ---------- 1 70-79-b3-3e-81-1c to 70-79-b3-3e-81-69 FDO22111H2V Mod Online Diag Status --- ------------------ 1 Pass * this terminal session leaf2#show cdp neighbors Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge S - Switch, H - Host, I - IGMP, r - Repeater, V - VoIP-Phone, D - Remotely-Managed-Device, s - Supports-STP-Dispute Device-ID Local Intrfce Hldtme Capability Platform Port ID Toleaf2 Eth1/23 142 S I WS-C3750X-24S Gig1/0/1 <<<<<<<<<<<<<<< Towards Host-2 switch(SAL2024RRYF) Eth1/47 175 R S I s N9K-C9372PX-E Eth1/4 spine2(SAL1949UELD) Eth1/48 121 R S s N9K-C9396PX Eth1/8 Total entries displayed: 3 leaf2# leaf2#show hardware internal tah interface ethernet1/23 ######################################### IfIndex: 0x1a002c00 DstIndex: 6056 IfType: 26 Asic: 0 <<<<<<<<<<< Asic: 0 AsicPort: 2 SrcId: 4 <<<<<<<<<<< Slice: 0 <<<<<<<<<<< PortOnSlice: 2 <........snipped for brevity...........> leaf2#
leaf2#show system internal ethpm info interface ethernet 1/23 | grep slice IF_STATIC_INFO: port_name=Ethernet1/23,if_index:0x1a002c00,ltl=6056,slot=0, nxos_port=88,dmod=1,dpid=2,unit=0,queue=65535,xbar_unitbmp=0x0,ns_pid=255,slice_num=0,port_on_slice=2,src_id=4 leaf2#
运行elam并检查您是否看到发送的内容（请记住，我们添加了更多参数 — Packet Size、DF-Bit、Data-Pattern）。
leaf2#configure terminal leaf2(config)#attach module 1 module-1#debug platform internal tah elam asic 0 module-1(TAH-elam)#trigger init asic 0 in-select 6 out-select 0 use-src-id 4 param values: start asic 0, start slice 0, lu-a2d 1, in-select 6, out-select 0, src_id 4 module-1(TAH-elam-insel6)# start module-1(TAH-elam-insel6)# report Initting block addresses DAVOS ELAM REPORT SUMMARY slot - 1, asic - 0, slice - 0 ============================ Incoming Interface: Eth1/23 Src Idx : 0x59, Src BD : NA Outgoing Interface Info: dmod 1, dpid 35 Dst Idx : 0xbd, Dst BD : 1000 Packet Type: IPv4 Dst MAC address: 00:C8:8B:F9:5F:41 Src MAC address: E0:D1:73:A4:1D:41 .1q Tag0 VLAN: 1000, cos = 0x0 <<<<<<<<<<<<<<<<<<<<< VLAN-ID Dst IPv4 address: 172.20.2.100 Src IPv4 address: 172.20.2.11 Ver = 4, DSCP = 0, Don't Fragment = 1 <<<<<<<<<<<<<<<<<<<<< DF-bit is SET Proto = 1, TTL = 255, More Fragments = 0 Hdr len = 20, Pkt len = 777, Checksum = 0x13dc <<<<<<<<<<<<<<<<<<<<< Pacekt size = 777 L4 Protocol : 1 ICMP type : 0 <<<<<<<<<<<<<<<<<<<<< (Echo (ping) reply) ICMP code : 0 Drop Info: ---------- LUA: LUB: LUC: LUD: Final Drops: vntag: vntag_valid : 0 vntag_vir : 0 vntag_svif : 0 module-1(TAH-elam-insel6)# module-1(TAH-elam-insel6)#exit module-1(TAH-elam)#exit module-1#exit leaf2# leaf2#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0 detail Capturing on inband Frame 1 (795 bytes on wire, 795 bytes captured) Arrival Time: May 31, 2020 15:45:55.674558000 [Time delta from previous captured frame: 0.000000000 seconds] [Time delta from previous displayed frame: 0.000000000 seconds] [Time since reference or first frame: 0.000000000 seconds] Frame Number: 1 Frame Length: 795 bytes Capture Length: 795 bytes [Frame is marked: False] [Protocols in frame: eth:vlan:ip:icmp:data] Ethernet II, Src: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41), Dst: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Destination: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: 802.1Q Virtual LAN (0x8100) 802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000 000. .... .... .... = Priority: 0 ...0 .... .... .... = CFI: 0 .... 0011 1110 1000 = ID: 1000 Type: IP (0x0800) Internet Protocol, Src: 172.20.2.11 (172.20.2.11), Dst: 172.20.2.100 (172.20.2.100) <<<<<<<<<<<<<<<<<<<<< RETURN TRAFFIC (ICMP RESPONSE) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE IS 777 Identification: 0x8233 (33331) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< DF-BIT IS SET ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xea4d [correct] [Good: True] [Bad : False] Source: 172.20.2.11 (172.20.2.11) Destination: 172.20.2.100 (172.20.2.100) Internet Control Message Protocol Type: 0 (Echo (ping) reply) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PING RESPONSE Code: 0 () Checksum: 0xa035 [correct] Identifier: 0x001f Sequence number: 2511 (0x09cf) Data (749 bytes) 0000 00 00 00 00 14 7f 4a db be ef be ef be ef be ef ......J......... <<<<<<<<<<<<<<<<<< you see the data pattern as "beef" 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0200 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0210 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0220 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0230 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0240 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0250 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0260 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0270 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0280 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0290 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02e0 be ef be ef be ef be ef be ef be ef 00 ............. Data: 00000000147F4ADBBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF... [Length: 749] Frame 2 (791 bytes on wire, 791 bytes captured) Arrival Time: May 31, 2020 15:45:55.694904000 [Time delta from previous captured frame: 0.020346000 seconds] [Time delta from previous displayed frame: 0.020346000 seconds] [Time since reference or first frame: 0.020346000 seconds] Frame Number: 2 Frame Length: 791 bytes Capture Length: 791 bytes [Frame is marked: False] [Protocols in frame: eth:ip:icmp:data] Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: IP (0x0800) Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) Version: 4 Header length: 20 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 777 Identification: 0x8237 (33335) Flags: 0x02 (Don't Fragment) 0.. = Reserved bit: Not Set .1. = Don't fragment: Set ..0 = More fragments: Not Set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0xea49 [correct] [Good: True] [Bad : False] Source: 172.20.2.100 (172.20.2.100) Destination: 172.20.2.11 (172.20.2.11) Internet Control Message Protocol Type: 8 (Echo (ping) request) Code: 0 () Checksum: 0x980f [correct] Identifier: 0x001f Sequence number: 2515 (0x09d3) Data (749 bytes) 0000 00 00 00 00 14 7f 4a fd be ef be ef be ef be ef ......J......... 0010 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0020 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0030 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0040 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0050 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0060 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0070 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0080 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0090 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0100 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0110 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0120 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0130 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0140 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0150 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0160 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0170 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0180 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0190 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0200 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0210 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0220 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0230 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0240 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0250 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0260 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0270 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0280 be ef be ef be ef be ef be ef be ef be ef be ef ................ 0290 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................ 02e0 be ef be ef be ef be ef be ef be ef 00 ............. Data: 00000000147F4AFDBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF... [Length: 749]
修订历史记录
| 版本 | 发布日期 | 备注 |
|---|---|---|
2.0 |
17-Oct-2022 |
IP编址修订 |
1.0 |
07-Jul-2020 |
初始版本 |
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