首先放两张图，了解下 EVPN VPWS。EVPN VPWS 会使用到 Type1 和 Type 4 两类路由，也分为 Single-Home 和 Multi-home 两种架构，这里记录下 single-home 的简单配置。
TOPO #
Configuration #
PE1:
RP/0/RP0/CPU0:ASR9922-B#show run int bundle-ether 800
Thu Sep 10 08:48:09.262 UTC
interface Bundle-Ether800
mtu 4860
l2transport
!
!
RP/0/RP0/CPU0:ASR9922-B#show run l2vpn xconnect group cisco-l2vpn-evpn-vpws
Thu Sep 10 08:48:29.189 UTC
l2vpn
xconnect group cisco-l2vpn-evpn-vpws
p2p vpws_64900
interface Bundle-Ether800
description vpws_64900
neighbor evpn evi 64900 target 819 source 198 <<< evi 需要一致， source标识本端AC，targe标识对端AC
!
!
!
!
RP/0/RP0/CPU0:ASR9922-B#show run evpn
Thu Sep 10 08:48:33.611 UTC
evpn
evi 64900
bgp
rd 10.1.12.1:64900
route-target import 9929:64900
route-target export 9929:64900
!
description vpws_test
control-word-disable
!
!
RP/0/RP0/CPU0:ASR9922-B#show run router bgp
Thu Sep 10 08:51:28.092 UTC
router bgp 38365
bgp router-id 10.1.1.1
!
address-family l2vpn evpn
!
neighbor 10.1.2.2
remote-as 38365
update-source Loopback1000
address-family l2vpn evpn
!
!
PE2：
RP/0/RSP0/CPU0:ASR9006-L#show run int bundle-ether 800
Thu Sep 10 16:52:05.649 UTC
interface Bundle-Ether800
mtu 4860
l2transport
!
!
RP/0/RSP0/CPU0:ASR9006-L#show run l2vpn xconnect group cisco-l2vpn-evpn-vpws
Thu Sep 10 16:52:09.704 UTC
l2vpn
xconnect group cisco-l2vpn-evpn-vpws
p2p vpws_64900
interface Bundle-Ether800
description vpws_64900
neighbor evpn evi 64900 target 198 source 819
!
!
!
!
RP/0/RSP0/CPU0:ASR9006-L#show run evpn
Thu Sep 10 16:52:13.473 UTC
evpn
evi 64900
bgp
rd 10.1.12.2:64900
route-target import 9929:64900
route-target export 9929:64900
!
description vpws_test
control-word-disable
!
!
RP/0/RSP0/CPU0:ASR9006-L#show run router bgp
Thu Sep 10 16:53:40.957 UTC
router bgp 38365
bgp router-id 10.1.2.2
address-family l2vpn evpn
!
neighbor 10.1.1.1
remote-as 38365
update-source Loopback1000
address-family l2vpn evpn
!
!
!
底层起 ISIS/LDP 或者 SR。
测试命令 #
#show l2vpn xconnnect <>
#show evpn evi ead
#show bgp l2vpn evpn route-type 1
RP/0/RP0/CPU0:ASR9922-B#show bgp l2vpn evpn summary
Thu Sep 10 08:55:10.183 UTC
BGP router identifier 10.1.1.1, local AS number 38365
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 55
BGP NSR Initial initsync version 1 (Reached)
BGP NSR/ISSU Sync-Group versions 55/0
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process RcvTblVer bRIB/RIB LabelVer ImportVer SendTblVer StandbyVer
Speaker 55 55 55 55 55 55
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
10.1.2.2 0 38365 21 20 55 0 0 00:16:51 1
RP/0/RP0/CPU0:ASR9922-B#show bgp l2vpn evpn
Thu Sep 10 08:55:19.603 UTC
BGP router identifier 10.1.1.1, local AS number 38365
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0x0 RD version: 0
BGP main routing table version 55
BGP NSR Initial initsync version 1 (Reached)
BGP NSR/ISSU Sync-Group versions 55/0
BGP scan interval 60 secs
Status codes: s suppressed, d damped, h history, * valid, > best
i - internal, r RIB-failure, S stale, N Nexthop-discard
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 10.1.12.1:64900 (default for vrf VPWS:64900)
*> [1][0000.0000.0000.0000.0000][198]/120
0.0.0.0 0 i
*>i[1][0000.0000.0000.0000.0000][819]/120
10.1.2.2 100 0 i
Route Distinguisher: 10.1.12.2:64900
*>i[1][0000.0000.0000.0000.0000][819]/120
10.1.2.2 100 0 i
Processed 3 prefixes, 3 paths
RP/0/RP0/CPU0:ASR9922-B#show bgp l2vpn evpn rd 10.1.12.1:64900 [1][0000.0000.0000.0000.0000][198]/120 detail
Thu Sep 10 08:55:30.735 UTC
BGP routing table entry for [1][0000.0000.0000.0000.0000][198]/120, Route Distinguisher: 10.1.12.1:64900
Versions:
Process bRIB/RIB SendTblVer
Speaker 47 47
Local Label: 24000 (no rewrite);
Flags: 0x00040001+0x00000000;
Last Modified: Sep 10 08:14:15.832 for 00:41:14
Paths: (1 available, best #1)
Advertised to peers (in unique update groups):
10.1.2.2
Path #1: Received by speaker 0
Flags: 0x402002000504000b, import: 0x00, EVPN: 0x0
Advertised to peers (in unique update groups):
10.1.2.2
Local
0.0.0.0 from 0.0.0.0 (10.1.1.1), if-handle 0x00000260
Origin IGP, localpref 100, valid, redistributed, best, group-best, import-candidate, rib-install
Received Path ID 0, Local Path ID 1, version 47
Extended community: EVPN L2 ATTRS:0x02:4846 RT:9929:64900
RP/0/RP0/CPU0:ASR9922-B#