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Interface BDI doesn't stay up

Hi Team,

 

I have noticed a weird behaviour on my ASR920 routers trying to configure VPLS

 

l2 vfi TWC manual
 vpn id x
 bridge-domain x

!

interface GigabitEthernet0/0/10
 description Test
 no ip address
 negotiation auto
 no keepalive
 service instance x ethernet
  encapsulation untagged
  rewrite ingress tag pop 1 symmetric
  bridge-domain x
 !

 

If I have Vlan x trunked via a Pseudowire and also on an access port (service-instance), unless the access port is physically up, the "interface BDI" stays down even if the Pseudowire is up.

 

I would expect the BDI interface to be up as long as a Pseudowire in that BDI is up. I tried things like "no autostate" and "no keepalive", but these commands are not supported on BDI interfaces on ASR 920.

 

One other thing I noticed is that if I shut down the affected bridge-domain and no shut it, the BDI comes up and stays up indefinitely.

2 REPLIES 2
esundberg
Beginner

Same issue.. Opened tac case  687971242

 

ASR920-24TZ#conf t
ASR920-24TZ(config)#bridge-domain 650
ASR920-24TZ(config-bdomain)#
ASR920-24TZ(config-bdomain)#l2 vfi 10650 manual
ASR920-24TZ(config-vfi)# vpn id 10650
ASR920-24TZ(config-vfi)# bridge-domain 650
ASR920-24TZ(config-vfi)# mtu 9180
ASR920-24TZ(config-vfi)# neighbor 1.1.1.1.96 pw-class VPLS
ASR920-24TZ(config-vfi-neighbor)# neighbor 1.1.1.1.82 pw-class VPLS
ASR920-24TZ(config-vfi-neighbor)# neighbor 1.1.1.1.92 pw-class VPLS
ASR920-24TZ(config-vfi-neighbor)#
ASR920-24TZ(config-vfi-neighbor)#int Gi0/0/1
ASR920-24TZ(config-if)# service instance 1 ethernet
ASR920-24TZ(config-if-srv)# encapsulation default
ASR920-24TZ(config-if-srv)# l2protocol tunnel cdp stp vtp lldp
Configured Platform supported protocols cdp stp vtp lldp
ASR920-24TZ(config-if-srv)# bridge-domain 650
ASR920-24TZ(config-if-srv)#
ASR920-24TZ(config-if-srv)#exit
ASR920-24TZ(config-if)#exit
ASR920-24TZ(config)#exit
ASR920-24TZ#sh mpls l2transport vc vcid 10650

Local intf Local circuit Dest address VC ID Status
------------- -------------------------- --------------- ---------- ----------
VFI 10650 vfi 1.1.1.1.82 10650 DOWN
VFI 10650 vfi 1.1.1.1.92 10650 DOWN
VFI 10650 vfi 1.1.1.1.96 10650 DOWN

ASR920-24TZ#conf t
Enter configuration commands, one per line. End with CNTL/Z.
ASR920-24TZ(config)#bridge-domain 650
ASR920-24TZ(config-bdomain)#shut
ASR920-24TZ(config-bdomain)#no shut
ASR920-24TZ(config-bdomain)#end
ASR920-24TZ#sh mpls l2transport vc vcid 10650

Local intf Local circuit Dest address VC ID Status
------------- -------------------------- --------------- ---------- ----------
VFI 10650 vfi 1.1.1.1.82 10650 UP
VFI 10650 vfi 1.1.1.1.92 10650 UP
VFI 10650 vfi 1.1.1.1.96 10650 UP

ASR920-24TZ#

Great, thanks! Please report back with what they tell you.