From: Dalu-Chandu, Jay (JD163604@NCR.COM)
Date: Wed Nov 10 2004 - 14:50:20 GMT-3
Guys,
I have a question regarding a sample lab configuration I'm currently working
on. The IGP used is ISIS with two areas 49.0001 and 49.0005. Within area 1
I have an L1 only router attached to a L1L2 router, which is in turn
attached to a L2 router in area 5.
R1(L1)--------R3(L1/L2)----------R5(L2)
R1 and R5 are PE routers, R3 is a P router. A BGP relationship for vpnv4
has been established to the loopbacks of the PE devices. I can see the vrf
routes associated on each PE device. When I try to ping an IP address
within the vrf from R1 to R5 I see cef drops (debug ip cef drops). I notice
that no label exists for the next-hop-address of R5 because I am only
receiving the default from R3. To correct this I route-leaked L2 into L1
for R5's loopback.
Now I have a label and no more cef packet drops on R1. But I still cannot
ping. R5 complains that it does not have a parent tag when I try pinging
from there (debug ip cef drops). I also notice that only a single label is
imposed when looking at show ip cef vrf xxx A.B.C.D? Can anyone help, am I
missing something obvious?
Regards
Jay Dalu-Chandu
-- Network Consultant (BEng, CCNP) NCR UK Limited Mobile: 07803231944 Email: jay.dalu-chandu@ncr.com
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