[c-nsp] bgp vpls rfc4761 - no failover at multihomed ce site

[Aaron]

ugh!    15.3(3)S2 didn't help.   and 15.4.2(S) didn't help either.  ... what
am I doing wrong ?  when I bring down 3600-2 g0/10, I can't reach devices
behind 3600-1 g0/10, and it appears that 9k still have pw and bgp nlri for
3600-2.  So it's like the ac on 3600-2 (g0/10) going down does not propagate
into bgp to cause 9k to see 3600-2 nlri as unreachable and 9k still sees
3600-2 as best path.  9k does see both 3600's.  ONLY when I remove the vfi
context completely from 3600-2 does the 9k failover to 3600-1 and traffic is
restored.  See previous email in thread about bgp l2vpn vpls table on 9k.

Both me's pretty much look the same...

l2vpn vfi context v45
 vpn id 45
 autodiscovery bgp signaling bgp
  ve id 2

interface Vlan45
 no ip address
 member vfi v45

bridge-domain 45
 member GigabitEthernet0/10 service-instance 45

interface GigabitEthernet0/10
 switchport trunk allowed vlan none
 switchport mode trunk
 load-interval 30
 service instance 45 ethernet
  encapsulation dot1q 45
  rewrite ingress tag pop 1 symmetric


9k is...

l2vpn
 bridge group v45
  bridge-domain v45
   interface GigabitEthernet0/0/0/3
   !
   vfi v45
    vpn-id 45
    autodiscovery bgp
     rd 64512:45
     route-target 64512:45
     signaling-protocol bgp
      ve-id 1
     !
    !
   !
   routed interface BVI45


-----Original Message-----
From: Jason Lixfeld [mailto:jason at lixfeld.ca] 
Sent: Tuesday, April 29, 2014 12:30 PM
To: Aaron
Cc: <cisco-nsp at puck.nether.net>
Subject: Re: [c-nsp] bgp vpls rfc4761 - no failover at multihomed ce site

There are BGP signaled, BGP AD VPLS issues like that, that I found and
reported.   They were resolved in 15.3(3).  I'd get on to 15.3(3)S2 if you
can. 

Sent from my iPhone

> On Apr 29, 2014, at 1:06 PM, "Aaron" <aaron1 at gvtc.com> wrote:
> 
> Hi All, it doesn't seem that the AC's going down cause a bgp
reconvergence.
> 
> 
> 
> my test architecture is now, a single homed ce site off a asr9k (4.1.2)
and
> a second site dual-homed ce off (2) me3600's (15.3(2)S2)....
> 
> 
> 
> when i shutdown the (ac, attachment circuit) pe-ce port on the 3600-2 the
> traffic doesn't failover to 3600-1.  the only way i can get it to failover
> is to completely remove the vfi context in 3600-2.  then i see the 9k fire
> off a pw to 3600-1 and traffic starts to flow again to site 2.
> 
> 
> 
> 
> |----eng-lab-3600-1-----occam----- site2-pc2
> 
> 
> |                                                |
> 
> 
> |                                                |
> 
> 
> |                                                |
> 
> site1-pc---eng-lab-9k-1----mplscloud----|
> occam----- site2-pc1
> 
> 
> |                                                |
> 
> 
> |                                                |
> 
> 
> |                                                |            
> 
> 
> |----eng-lab-3600-2-----occam
> 
> 
> 
> 3600-1 is 10.101.12.251
> 
> 3600-2 is 10.101.12.250
> 
> 
> 
> 
> 
> 
> 
> *** before i delete vfi context from 3600-2....
> 
> 
> 
> RP/0/RSP0/CPU0:eng-lab-9k-1#sh bgp l2vpn vpl rd 64512:45
> 
> ...
> 
>   Network            Next Hop        Rcvd Label      Local Label
> 
> Route Distinguisher: 64512:45 (default for vrf v45:v45)
> 
> *> 1:1/32             0.0.0.0         nolabel         16315
> 
> *>i2:1/32             10.101.12.250   18              nolabel
> 
> * i                   10.101.12.251   307             nolabel
> 
> 
> 
> 
> 
> *** after i delete vfi context from 3600-2....
> 
> 
> 
> RP/0/RSP0/CPU0:eng-lab-9k-1#sh bgp l2vpn vpl rd 64512:45
> 
>   Network            Next Hop        Rcvd Label      Local Label
> 
> Route Distinguisher: 64512:45 (default for vrf v45:v45)
> 
> *> 1:1/32             0.0.0.0         nolabel         16315
> 
> *>i2:1/32             10.101.12.251   307             nolabel
> 
> 
> 
> 
> 
> Aaron
> 
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