Hello
Have 2 ASR router (R1 and R2) each peering (eBGP) with upstream Provider. Both the ASR receives full table from upstream provider except the default. Sample DIAGR
AM attached
Whenever we lose one the Transit circuit, we don’t see proper failover and the fix is to manually shut down the ports facing the downstream on the respective ASR. Suspecting traffic black hole.
ASRs advertises default to the downstream routers and accepts customer prefix.
Here is the BGP config on the ASR facing downstream routers. (Default Originate is used)
neighbor x.x.x.x
address-family ipv4 unicast
route-reflector-client
default-originate
next-hop-self
soft-reconfiguration inbound always
route-policy IPv4_default_only out
So the fix is to ask the provider to send default route as well? ANY SUGGESTIONS?
Here is the output from ASR facing internet
RP/0/RSP0/CPU0:ASR9K-2#show bgp 0.0.0.0
Thu Sep 18 21:52:40.099 ADT
% Network not in table
Output from the downstream router:
3400-1#show ip route 0.0.0.0
Routing entry for 0.0.0.0/0, supernet
Known via "bgp ", distance 200, metric 0, candidate default path, type internal
