在多站点设置中排除EVPN/VxLAN故障
简介
本文档介绍在多站点设置中排除以太网VPN/虚拟可扩展局域网(EVPN/VxLAN)故障的方法。
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：
| 所有站点枝叶 | N9K-C9336C-FX2 | NXOS:10.2(3) |
| S1_Spine1 | N9K-C9364C | NXOS:10.2(4) |
| S1_Spine2 | N9K-C9364C | NXOS:9.3(5) |
| S1_Border Gateway1、S2_Border Gateway2、S2_Border Gateway1 | N9K-C9332C | NXOS:9.3(9) |
| S1_边界网关2 | N9K-C9332C | NXOS:10.2(4) |
| 路由服务器 | N9K-C9396PX | NXOS:9.2(2) |
| 主机1 | N3K-C3264C-E | NXOS:9.3(5) |
| 主机 -2 和主机 -3 | N3K-C3264C-E | NXOS:9.2(2) |
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
拓扑
本文档介绍流量从DC-2 Host-3(192.168.200.104/24)发往何处，然后与数据包一起传输至目标DC-1 Host-2(10.2.3.4)。
检验控制平面
要验证控制平面，请输入以下命令：
HOST_3# show ip int brief
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Vlan100 192.168.100.103 protocol-up/link-up/admin-up
Vlan200 192.168.200.103 protocol-up/link-up/admin-up
HOST_3#
External_Router#
External_Router# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Vlan100 192.168.100.102 protocol-up/link-up/admin-up
Vlan200 192.168.200.102 protocol-up/link-up/admin-up
Lo10 10.2.3.4 protocol-up/link-up/admin-up
External_Router#
HOST_3#
HOST_3# ping 10.2.3.4 source 192.168.100.103
PING 10.2.3.4 (10.2.3.4) from 192.168.100.103: 56 data bytes
64 bytes from 10.2.3.4: icmp_seq=0 ttl=250 time=1.153 ms
64 bytes from 10.2.3.4: icmp_seq=1 ttl=250 time=0.569 ms
64 bytes from 10.2.3.4: icmp_seq=2 ttl=250 time=0.562 ms
64 bytes from 10.2.3.4: icmp_seq=3 ttl=250 time=0.525 ms
64 bytes from 10.2.3.4: icmp_seq=4 ttl=250 time=0.527 ms
--- 10.2.3.4 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.525/0.667/1.153 ms
HOST_3#
S2-Leaf1# show bgp l2vpn evp vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 4420, Local Router ID is 10.103.0.5
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: 10.103.0.5:5 (L3VNI 4000502)
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.2 100 0 300 100 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.2
S2-Leaf2# show bgp l2vpn evp vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 4389, Local Router ID is 10.103.0.8
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: 10.103.0.8:5 (L3VNI 4000502)
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.2 100 0 300 100 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.2 100 0 300 100 i
S2-Leaf2#
S2-leaf3# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 4196, Local Router ID is 10.103.0.9
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: 10.103.0.9:5 (L3VNI 4000502)
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.2 100 0 300 100 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.2 100 0 300 100 i
S2-Leaf4#
S2-Leaf4# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 4381, Local Router ID is 10.102.0.10
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: 10.102.0.10:5 (L3VNI 4000502)
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.2 100 0 300 100 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.2 100 0 300 100 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.2 100 0 300 100 i
S2-Leaf4#
S2-Leaf4#
S2-Spine1# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 1235, Local Router ID is 10.103.0.3
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, 2 - best2
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 200:4000502
* i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.2 100 0 300 100
*>i 10.100.100.2 100 0 300 100 i
* i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.2 100 0 300 100 65111 i
*>i 10.100.100.2 100 0 300 100 65111 i
* i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.2 100 0 300 100 i
*>i 10.100.100.2 100 0 300 100 i
* i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.2 100 0 300 100 i
*>i 10.100.100.2 100 0 300 100 i
S2-BG1# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.31.1.3 protocol-up/link-up/admin-up
Lo1 10.135.135.135 protocol-up/link-up/admin-up
Lo100 10.100.100.2 protocol-up/link-up/admin-up
Eth1/1 192.168.17.12 protocol-up/link-up/admin-up
Eth1/3 10.150.152.1 protocol-up/link-up/admin-up
S2-BG1#
S2-BG1# show ip route 10.2.3.4 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.2.3.4/32, ubest/mbest: 1/0
*via 10.100.100.1%default, [20/0], 04:09:46, bgp-200, external, tag 300, segid: 4000502 tunnelid: 0xa646401 encap: VXLAN
S2-BG1#
S2-BG1# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 6206, Local Router ID is 10.31.1.3
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, 2 - best2
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 100:4000502
*>e[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.1 0 300 100 i
*>e[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.1 0 300 100 65111 i
*>e[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.1 0 300 100 i
*>e[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.1 0 300 100 i
S2-BG2# show ip int brief
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.31.1.4 protocol-up/link-up/admin-up
Lo1 10.136.136.136 protocol-up/link-up/admin-up
Lo100 10.100.100.2 protocol-up/link-up/admin-up
Eth1/1 192.168.18.12 protocol-up/link-up/admin-up
Eth1/3 10.150.153.1 protocol-up/link-up/admin-up
S2-BG2#
S2-BG2#
S2-BG2# show ip route 10.2.3.4 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.2.3.4/32, ubest/mbest: 1/0
*via 10.100.100.1%default, [20/0], 04:15:13, bgp-200, external, tag 300, segid: 4000502 tunnelid: 0xa646401 encap: VXLAN
S2-BG2#
S2-BG2# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 5455, Local Router ID is 10.31.1.4
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: 100:4000502
*>e[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.1 0 300 100 i
*>e[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.1 0 300 100 65111 i
*>e[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.1 0 300 100 i
*>e[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.100.100.1 0 300 100 i
Router_Server# show ip int brief
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.32.1.1 protocol-up/link-up/admin-up
Eth2/1 10.150.150.2 protocol-up/link-up/admin-up
Eth2/2 10.150.151.2 protocol-up/link-up/admin-up
Eth2/4 10.150.152.2 protocol-up/link-up/admin-up
Eth2/5 10.150.153.2 protocol-up/link-up/admin-up
Router_Server#
Router_Server# show ip route 10.100.100.1
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.100.100.1/32, ubest/mbest: 2/0
*via 10.150.150.1, [20/0], 4d22h, bgp-300, external, tag 100
*via 10.150.151.1, [20/0], 4d22h, bgp-300, external, tag 100
Router_Server#
Router_Server#
Router_Server# show ip route 10.100.100.2
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.100.100.2/32, ubest/mbest: 2/0
*via 10.150.152.1, [20/0], 3w5d, bgp-300, external, tag 200
*via 10.150.153.1, [20/0], 3w5d, bgp-300, external, tag 200
Router_Server#
Router_Server# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 4574, Local Router ID is 10.32.1.1
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: 200:4000100
* e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.2 2000 0 200 i
*>e 10.100.100.2 2000 0 200 i
Route Distinguisher: 100:4000502
*>e[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.100.100.1 2000 0 100 i
* e 10.100.100.1 2000 0 100 i
* e[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.100.100.1 2000 0 100 65111 i
*>e 10.100.100.1 2000 0 100 65111 i
*>e[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.100.100.1 2000 0 100 i
* e 10.100.100.1 2000 0 100 i
*>e[5]:[0]:[0]:[32]:[10.100.100.2]/224
> 10.100.100.1 2000 0 100 i
* e 10.100.100.1 2000 0 100 i
S1_B2#
S1_B2# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.31.1.2 protocol-up/link-up/admin-up
Lo1 10.134.134.134 protocol-up/link-up/admin-up
Lo100 10.100.100.1 protocol-up/link-up/admin-up
Eth1/1 192.168.16.12 protocol-up/link-up/admin-up
Eth1/3 10.150.151.1 protocol-up/link-up/admin-up
S1_B2#
S1_B2#sho ip route 192.168.100.103 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
192.168.100.103/32, ubest/mbest: 1/0
*via 10.100.100.2%default, [20/0], 4d23h, bgp-100, external, tag 300, segid: 4000502 tunnelid: 0xa646402 encap: VXLAN
S1_B2#
S1_B2# show ip route 10.2.3.4 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.2.3.4/32, ubest/mbest: 1/0
*via 10.102.1.10%default, [200/0], 05:04:19, bgp-100, internal, tag 65111, segid: 4000502 tunnelid: 0xa66010a encap: VXLAN
S1_B2#
S1_B2#
S1_B2# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 5449, Local Router ID is 10.31.1.2
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: 200:4000100
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.df3b]:[32]:[192.168.100.104]/272
10.100.100.2 0 300 200 i
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.2 0 300 200 i
Route Distinguisher: 200:4000200
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.df3b]:[32]:[192.168.100.104]/272
10.100.100.2 0 300 200 i
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.2 0 300 200 i
Route Distinguisher: 10.102.0.9:5
*>i[2]:[0]:[0]:[48]:[cc7f.76fa.118f]:[0]:[0.0.0.0]/216
10.202.202.202 100 0 i
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.10 100 0 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.10 100 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.102.1.10 100 0 i
Route Distinguisher: 10.102.0.10:5
*>i[2]:[0]:[0]:[48]:[cc7f.76c6.a673]:[0]:[0.0.0.0]/216
10.202.202.202 100 0 i
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.6 100 0 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.6 100 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 0 i
Route Distinguisher: 10.31.1.2:5 (L3VNI 4000502)
*>l[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.134.134.134 100 0 i
*>l[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.134.134.134 100 0 65111 i
*>l[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.134.134.134 100 0 i
*>l[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.134.134.134 100 0 i
S1_B2#
S1-Bg1# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.31.1.1 protocol-up/link-up/admin-up
Lo1 10.133.133.133 protocol-up/link-up/admin-up
Lo100 10.100.100.1 protocol-up/link-up/admin-up
Eth1/1 192.168.15.12 protocol-up/link-up/admin-up
Eth1/3 10.150.150.1 protocol-up/link-up/admin-up
S1-Bg1#
S1-Bg1# show ip route 10.100.100.2 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.100.100.2/32, ubest/mbest: 1/0
*via 10.102.1.10%default, [200/0], 4d23h, bgp-100, internal, tag 100, segid: 4000502 tunnelid: 0xa66010a encap: VXLAN
S1-Bg1#
S1-Bg1# show ip route 192.168.100.103 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
192.168.100.103/32, ubest/mbest: 1/0
*via 10.100.100.2%default, [20/0], 4d23h, bgp-100, external, tag 300, segid: 4000502 tunnelid: 0xa646402 encap: VXLAN
S1-Bg1#
S1-Bg1# show ip route 10.2.3.4 vrf vrf_2
IP Route Table for VRF "vrf_2"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
10.2.3.4/32, ubest/mbest: 1/0
*via 10.102.1.10%default, [200/0], 05:21:41, bgp-100, internal, tag 65111, segid: 4000502 tunnelid: 0xa66010a encap: VXLAN
S1-Bg1#
S1-Bg1# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 6654, Local Router ID is 10.31.1.1
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: 200:4000100
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.df3b]:[32]:[192.168.100.104]/272
10.100.100.2 0 300 200 i
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.2 0 300 200 i
Route Distinguisher: 200:4000200
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.df3b]:[32]:[192.168.200.104]/272
10.100.100.2 0 300 200 i
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.200.103]/272
10.100.100.2 0 300 200 i
Route Distinguisher: 10.31.1.1:32867 (L2VNI 4000100)
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.2 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ff09]:[32]:[192.168.100.102]/272
10.202.202.202 100 0 i
* i 10.202.202.202 100 0 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3ff.00a7]:[32]:[192.168.100.100]/272
10.201.201.201 100 0 i
* i 10.201.201.201 100 0 i
*>e[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.200.103]/272
10.100.100.2 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ff09]:[32]:[192.168.200.102]/272
10.202.202.202 100 0 i
* i 10.202.202.202 100 0 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3ff.00a7]:[32]:[192.168.200.100]/272
10.201.201.201 100 0 i
* i 10.201.201.201 100 0 i
Route Distinguisher: 10.102.0.10:5
*>i[2]:[0]:[0]:[48]:[cc7f.76c6.a673]:[0]:[0.0.0.0]/216
10.202.202.202 100 0 i
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.6 100 0 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.6 100 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 0 i
Route Distinguisher: 10.31.1.1:5 (L3VNI 4000502)
*>l[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.133.133.133 100 0 i
*>l[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.133.133.133 100 0 65111 i
*>l[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.133.133.133 100 0 i
*>l[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.133.133.133 100 0 i
S1-Bg1#
S1-Leaf1# show ip int brief
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.102.0.5 protocol-up/link-up/admin-up
Lo1 10.102.1.8 protocol-up/link-up/admin-up
Eth1/2 192.168.17.12 protocol-up/link-up/admin-up
S1-Leaf1#
S1-Leaf1# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 918, Local Router ID is 10.102.0.5
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: 10.102.0.5:5 (L3VNI 4000502)
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.1 100 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.200.103]/272
10.100.100.1 100 0 300 200 i
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.10 100 0 i
* i 10.102.1.6 100 0 i
*>i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.10 100 0 65111 i
* i 10.102.1.6 100 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 0 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.102.1.10 100 0 i
S1-Leaf1#
S1-Leaf2# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.102.0.8 protocol-up/link-up/admin-up
Lo1 10.102.1.9 protocol-up/link-up/admin-up
Eth1/2 192.168.18.12 protocol-up/link-up/admin-up
S1-Leaf2#
S1-Leaf2#
S1-Leaf2# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 680, Local Router ID is 10.102.0.8
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: 10.102.0.8:5 (L3VNI 4000502)
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.1 100 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.200.103]/272
10.100.100.1 100 0 300 200 i
*>i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.10 100 0 i
* i 10.102.1.6 100 0 i
* i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.6 100 0 65111 i
*>i 10.102.1.10 100 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 0 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.102.1.10 100 0 i
S1-Leaf3#
S1-Leaf3# show ip int brie
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.102.0.9 protocol-up/link-up/admin-up
Lo1 10.102.1.10 protocol-up/link-up/admin-up
Eth1/2 192.168.19.12 protocol-up/link-up/admin-up
S1-Leaf3#
S1-Leaf3#
S1-Leaf3#
S1-Leaf3# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 5431, Local Router ID is 10.102.0.9
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: 10.102.0.9:5 (L3VNI 4000502)
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.1 100 0 300 200 i
* i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.6 100 0 i
*>l 10.102.1.10 100 32768 i
* i[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.6 100 0 65111 i
*>l 10.102.1.10 0 65111 i
*>i[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 0 i
*>l[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.102.1.10 100 32768 i
S1-Leaf3#
S1_Leaf4#
S1_Leaf4# show ip int brief
IP Interface Status for VRF "default"(1)
Interface IP Address Interface Status
Lo0 10.102.0.10 protocol-up/link-up/admin-up
Lo1 10.102.1.6 protocol-up/link-up/admin-up
Eth1/2 192.168.20.12 protocol-up/link-up/admin-up
S1_Leaf4#
S1_Leaf4#
S1_Leaf4# show bgp l2vpn evpn vrf vrf_2
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 5118, Local Router ID is 10.102.0.10
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: 10.102.0.10:5 (L3VNI 4000502)
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.100.103]/272
10.100.100.1 100 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3fe.ecb5]:[32]:[192.168.200.103]/272
10.100.100.1 100 0 300 200 i
*>i[2]:[0]:[0]:[48]:[6c8b.d3ff.00a7]:[32]:[192.168.100.100]/272
10.201.201.201 100 0 i
* i 10.201.201.201 100 0 i
* i[5]:[0]:[0]:[24]:[192.168.100.0]/224
10.102.1.10 100 0 i
*>l 10.102.1.6 100 32768 i
*>l[5]:[0]:[0]:[32]:[10.2.3.4]/224
10.102.1.6 0 65111 i
* i 10.102.1.10 100 0 65111 i
*>l[5]:[0]:[0]:[32]:[10.100.100.1]/224
10.102.1.6 100 32768 i
*>i[5]:[0]:[0]:[32]:[10.100.100.2]/224
10.102.1.10 100 0 i
S1_Leaf4#
检验数据平面
数据计划验证在多个设备上测试，以便了解不同的数据包捕获方法和变体。
从Host-3上的源IP地址192.168.100.103对外部路由器环回100“10.2.3.4”执行ping操作。
HOST_3#
HOST_3# ping 10.2.3.4 source 192.168.100.103
PING 10.2.3.4 (10.2.3.4) from 192.168.100.103: 56 data bytes
64 bytes from 10.2.3.4: icmp_seq=0 ttl=250 time=1.153 ms
64 bytes from 10.2.3.4: icmp_seq=1 ttl=250 time=0.569 ms
64 bytes from 10.2.3.4: icmp_seq=2 ttl=250 time=0.562 ms
64 bytes from 10.2.3.4: icmp_seq=3 ttl=250 time=0.525 ms
64 bytes from 10.2.3.4: icmp_seq=4 ttl=250 time=0.527 ms
--- 10.2.3.4 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.525/0.667/1.153 ms
HOST_3#
Ethanalyzer在站点2枝叶1和枝叶2上使用，以确认哪个枝叶接收/转发外部路由器环回10.2.3.4可达性的流量。
S2-Leaf1(config-monitor)# sho clock
Warning: No NTP peer/server configured. Time may be out of sync.
07:11:37.455 UTC Tue Feb 21 2023
Time source is NTP
S2-Leaf1(config-monitor)#
S2-Leaf1(config-monitor)# show run section monitor
show running-config | section monitor
icam monitor scale
monitor session 1
source interface port-channel100 both
destination interface sup-eth0
no shut
S2-Leaf1(config-monitor)#
S2-Leaf2(config-monitor)#
S2-Leaf2(config-monitor)# ethanalyzer local interface inband display-filter "ip.addr==10.2.3.4 && ip.addr==192.168.100.103 && icmp" limit-captured-frames 0
Capturing on 'ps-inb'
1385 2023-02-21 07:10:46.424195144 192.168.100.103 → 10.2.3.4 ICMP 102 Echo (ping) request id=0xdd1f, seq=0/0, ttl=255
1386 2023-02-21 07:10:46.424818423 10.2.3.4 → 192.168.100.103 ICMP 98 Echo (ping) reply id=0xdd1f, seq=0/0, ttl=251 (request in 1385)
1387 2023-02-21 07:10:46.425263621 192.168.100.103 → 10.2.3.4 ICMP 102 Echo (ping) request id=0xdd1f, seq=256/1, ttl=255
1388 2023-02-21 07:10:46.425486046 10.2.3.4 → 192.168.100.103 ICMP 98 Echo (ping) reply id=0xdd1f, seq=256/1, ttl=251 (request in 1387)
1389 2023-02-21 07:10:46.425856150 192.168.100.103 → 10.2.3.4 ICMP 102 Echo (ping) request id=0xdd1f, seq=512/2, ttl=255
1390 2023-02-21 07:10:46.426095692 10.2.3.4 → 192.168.100.103 ICMP 98 Echo (ping) reply id=0xdd1f, seq=512/2, ttl=251 (request in 1389)
1391 2023-02-21 07:10:46.426438174 192.168.100.103 → 10.2.3.4 ICMP 102 Echo (ping) request id=0xdd1f, seq=768/3, ttl=255
1392 2023-02-21 07:10:46.426642605 10.2.3.4 → 192.168.100.103 ICMP 98 Echo (ping) reply id=0xdd1f, seq=768/3, ttl=251 (request in 1391)
1393 2023-02-21 07:10:46.427004108 192.168.100.103 → 10.2.3.4 ICMP 102 Echo (ping) request id=0xdd1f, seq=1024/4, ttl=255
1394 2023-02-21 07:10:46.427210984 10.2.3.4 → 192.168.100.103 ICMP 98 Echo (ping) reply id=0xdd1f, seq=1024/4, ttl=251 (request in 1393)
10
S2-Leaf2(config-monitor)#
S2-Leaf2(config-monitor)# sho clock
Warning: No NTP peer/server configured. Time may be out of sync.
07:12:31.069 UTC Tue Feb 21 2023
Time source is NTP
S2-Leaf2(config-monitor)#
CLI输出确认Site 2 Leaf-2接收并转发外部路由器10.2.3.4的Internet控制消息协议(ICMP)请求。
下一个CLI示例确认站点1验证哪些枝叶将数据包转发到目标10.2.3.4。
S1-Leaf3(config-monitor)#
S1-Leaf3(config-monitor)# ethanalyzer local interface inband display-filter "ip.addr==10.2.3.4 && ip.addr==192.168.100.103 && icmp" limit-captured-frames 0
Capturing on 'ps-inb'
253 2023-02-21 07:10:50.379741403 192.168.100.103 → 10.2.3.4 ICMP 98 Echo (ping) request id=0xdd1f, seq=0/0, ttl=251
254 2023-02-21 07:10:50.380357311 10.2.3.4 → 192.168.100.103 ICMP 102 Echo (ping) reply id=0xdd1f, seq=0/0, ttl=255 (request in 253)
255 2023-02-21 07:10:50.380810012 192.168.100.103 → 10.2.3.4 ICMP 98 Echo (ping) request id=0xdd1f, seq=256/1, ttl=251
256 2023-02-21 07:10:50.381025676 10.2.3.4 → 192.168.100.103 ICMP 102 Echo (ping) reply id=0xdd1f, seq=256/1, ttl=255 (request in 255)
257 2023-02-21 07:10:50.381401968 192.168.100.103 → 10.2.3.4 ICMP 98 Echo (ping) request id=0xdd1f, seq=512/2, ttl=251
258 2023-02-21 07:10:50.381631838 10.2.3.4 → 192.168.100.103 ICMP 102 Echo (ping) reply id=0xdd1f, seq=512/2, ttl=255 (request in 257)
259 2023-02-21 07:10:50.381984272 192.168.100.103 → 10.2.3.4 ICMP 98 Echo (ping) request id=0xdd1f, seq=768/3, ttl=251
260 2023-02-21 07:10:50.382176820 10.2.3.4 → 192.168.100.103 ICMP 102 Echo (ping) reply id=0xdd1f, seq=768/3, ttl=255 (request in 259)
261 2023-02-21 07:10:50.382549820 192.168.100.103 → 10.2.3.4 ICMP 98 Echo (ping) request id=0xdd1f, seq=1024/4, ttl=251
262 2023-02-21 07:10:50.382746640 10.2.3.4 → 192.168.100.103 ICMP 102 Echo (ping) reply id=0xdd1f, seq=1024/4, ttl=255 (request in 261)
S1-Leaf3(config-monitor)# sho clock
Warning: No NTP peer/server configured. Time may be out of sync.
07:11:22.514 UTC Tue Feb 21 2023
Time source is NTP
S1-Leaf3(config-monitor)#
S1-Leaf3(config-monitor)# show run section monitor
show running-config | section monitor
monitor session 1
source interface port-channel2 both
destination interface sup-eth0
no shut
S1-Leaf3(config-monitor)#
S1-Leaf3(config-monitor)# show moni sess 1
session 1
---------------
type : local
state : up
acl-name : acl-name not specified
source intf :
rx : Po2
tx : Po2
both : Po2
source VLANs :
rx :
tx :
both :
filter VLANs : filter not specified
source fwd drops :
destination ports : sup-eth0
source VSANs :
rx :
S1-Leaf3(config-monitor)#
S1_Leaf4(config-monitor)# ethanalyzer local interface inband display-filter "ip.addr==192.168.100.103" limit-captured-frames 0
Capturing on 'ps-inb'
S1_Leaf4(config-monitor)#
S1_Leaf4(config-monitor)# sho clock
Warning: No NTP peer/server configured. Time may be out of sync.
07:11:15.187 UTC Tue Feb 21 2023
Time source is NTP
S1_Leaf4(config-monitor)#
客户回应说他们面临着从Host-3到外部路由器的连接问题。客户希望确认VXLAN交换矩阵中的所有内容都正常，并需要确认我们的枝叶将流量转发到外部路由器。解决此问题的步骤如下：
- 向外部路由器发起ping，确认IP地址10.2.3.4是否可达。
- 在S1-Leaf3和S1-Leaf4上采用嵌入式逻辑分析器模块(ELAM)捕获，以查看它是否被触发（基于拓扑和流量）。
- 使用ELAM捕获时，确认数据包已从接口转发出去，并指向外部路由器。
- 站点2 — 通过ethanalyzer，我们可以看到ICMP请求和应答。如果没有应答，则问题出在远程端。
- 如果从Host-4可以访问10.2.3.4，并且Host-3存在问题，则可能是特定于主机的问题。检查访问控制列表(ACL)、循环冗余校验(CRC)错误和散列链路。
HOST_3# ping 10.2.3.4 source 192.168.100.103
PING 10.2.3.4 (10.2.3.4) from 192.168.100.103: 56 data bytes
Request 0 timed out
Request 1 timed out
Request 2 timed out
Request 3 timed out
Request 4 timed out
--- 10.2.3.4 ping statistics ---
5 packets transmitted, 0 packets received, 100.00% packet loss
HOST_3#
Host4# ping 10.2.3.4 source 192.168.100.104
PING 10.2.3.4 (10.2.3.4) from 192.168.100.104: 56 data bytes
64 bytes from 10.2.3.4: icmp_seq=0 ttl=250 time=1.266 ms
64 bytes from 10.2.3.4: icmp_seq=1 ttl=250 time=0.62 m
64 bytes from 10.2.3.4: icmp_seq=2 ttl=250 time=0.603 ms
64 bytes from 10.2.3.4: icmp_seq=3 ttl=250 time=0.474 ms
64 bytes from 10.2.3.4: icmp_seq=4 ttl=250 time=0.457 ms
--- 10.2.3.4 ping statistics ---
5 packets transmitted, 5 packets received, 0.00% packet loss
round-trip min/avg/max = 0.457/0.684/1.266 ms
检验数据平面
获取ELAM捕获以验证端口ASIC、切片和SrcId
show hardware internal tah interface
show system internal ethpm info interface
| i i src
S1-Leaf3(TAH-elam)# debug platform internal tah elam asic 0
S1-Leaf3(TAH-elam)# trigger init asic 0 slice 1 in-select 7 out-select 0 use-src-id 8
Slot 1: param values: asic 0, slice 1, lu-a2d 1, in-select 7, out-select 0, src_id 8
S1-Leaf3(TAH-elam-insel7)# set inner ipv4 src_ip 192.168.100.103
S1-Leaf3(TAH-elam-insel7)# start
S1-Leaf3(TAH-elam-insel7)# report
HEAVENLY ELAM REPORT SUMMARY
slot - 1, asic - 0, slice - 1
============================
Incoming Interface: Eth1/2
Src Idx : 0x5, Src BD : 2001
Outgoing Interface Info: dmod 1, dpid 52>>>>>>>>>>>>Pointing to Eth 1/24 towards external Router
Dst Idx : 0x601, Dst BD : 100
Packet Type: IPv4
Dst MAC address: CC:7F:76:FA:11:8F
Src MAC address: 4C:E1:75:F7:38:C7
Dst IPv4 address: 10.2.3.4
Src IPv4 address: 192.168.100.103
Ver = 4, DSCP = 0, Don't Fragment = 0
Proto = 1, TTL = 252, More Fragments = 0
Hdr len = 20, Pkt len = 84, Checksum = 0xb712
L4 Protocol : 1
ICMP type : 8
ICMP code : 0
Drop Info:
----------
LUA:
LUB:
LUC:
LUD:
Final Drops:
vntag:
vntag_valid : 0
vntag_vir : 0
vntag_svif : 0
S1-Leaf3(TAH-elam-insel7)#
S1_Leaf4# show system internal ethpm info interface ethernet 1/2 | grep slice
IF_STATIC_INFO: port_name=Ethernet1/2,if_index:0x1a000200,ltl=6140,slot=0, nxos_port=4,
dmod=1,dpid=76,unit=0,queue=65535,xbar_unitbmp=0x0,ns_pid=255,slice_num=1,port_on_slice=4,src_id=8
S1_Leaf4(TAH-elam)# debug platform internal tah elam asic 0
S1_Leaf4(TAH-elam)# trigger init asic 0 slice 1 in-select 7 out-select 0 use-src-id 8
Slot 1: param values: asic 0, slice 1, lu-a2d 1, in-select 7, out-select 0, src_id 8
S1_Leaf4(TAH-elam-insel7)# set inner ipv4 src_ip 192.168.100.103
S1_Leaf4(TAH-elam-insel7)# start
S1_Leaf4(TAH-elam-insel7)# report
ELAM not triggered yet on slot - 1, asic - 0, slice - 1
S1_Leaf4(TAH-elam-insel7)#
ELAM输出的结论是，枝叶将流量转发到外部路由器，但是没有来自外部路由器的响应。因此，请向外部路由器团队检查ICMP响应。
修订历史记录
| 版本 | 发布日期 | 备注 |
|---|---|---|
1.0 |
11-Apr-2023 |
初始版本 |
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