[c-nsp] L2 VFI + Local VLAN w/ IP

James Bensley jwbensley at gmail.com
Tue Aug 30 16:44:02 EDT 2016


Hi Mark,

You are talking about a Routed Pseudowire (RPW). If you change Gi0/20
to contain an EFP in VLAN3854 then your SVI will be up, you still face
the problem that when the local interface is down the SVI will go down
and the users at the far end of the pseudowire will have no layer 3
gateway, but its better than being down all the time!

I have just written the below example config off the top of my head so
might not be 100% correct. When using "l2 vfi KCMO-SIP-1-VFI manual"
we are creating a potentially multi-pointed bridge-domain (typically
used for manual VPLS configuration) which will be "down" if neither
ACs are up (the local SVI or p-t-p pseudowire):

interface GigabitEthernet0/20
 description ETH1000-| SM FIBER | SIP
 switchport mode trunk
 switchport trunk allowed vlan none
  service instance 3854 ethernet
  encapsulation default
  bridge-domain 3854
  l2protocol fowarding
  exit
 exit

interface Vlan3854
 description SIP GW for 67.x.x.x/29 LAN
 mtu 9000
 vrf forwarding SIP-1
 ip address 67.x.x.x 255.255.255.248
 ip address 65.z.z.z 255.255.255.252 secondary
 xconnect vfi KCMO-SIP-1-VFI
 exit

l2 vfi KCMO-SIP-1-VFI manual
 vpn id 3854
 neighbor 10.x.x.x encapsulation mpls
 xconnect vfi KCMO-SIP-1-VFI
 exit




Cheers,
James.


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