ASR9k stop responding to local interfaces when I add default static route

[Tomasz Tuzimek]

Hello

When I add default route to ASR9k(PE1 router) with gateway to local CE I can't ping any local interfaces(loopback and physicals) on PE1 in VRF=VOIP from other PEs.

If I remove static route(0.0.0.0/0) the problem disppears.

router static

vrf VOIP

  address-family ipv4 unicast

   0.0.0.0/0 10.0.0.1

All ASRs have got IOS-XR=4.2.1.

Is it a bug?

[xthuijs]

I suspect that the source address of your ping is not something that is routable by anything else but that new default.

XR has a nasty nature of not selecting a source address when pinging like IOS does.

IOS always takes the source addr of the interface it goes out of, XR doesn't always do that under certain circumstnaces.

That may be related.

Best way to verify that for us is to do a debug icmp on the PE that has this static route

and a show route on the source address that is recorded in that incoming ICMP request.

cheers!

xander