From: L. Jankok (ljankok@gmail.com)
Date: Wed Dec 10 2008 - 10:59:53 ARST
RSRack1R6 is configured with two subinterfaces, f0/0.6 is stub and f0/0.26
is connected to the rest of the network.
A neighbor is found through f0/0.26
Address Prio/Mode
132.1.26.2 FastEthernet0/0.26 02:42:43/00:01:36 v2 1 / S
pinging the group 228.28.28.28 from this neighbor, RSRack1R2, is successfull
RSRack1R2#ping 228.28.28.28
Reply to request 0 from 132.1.17.7, 100 ms
pinging the same group sourced from subinterface f0/0.06 or f0/.26, from R6
fails
each time displaying a message stating that the other sub interface is
"not RPF interface"
RSRack1R6#ping 228.28.28.28 source f0/0.6
Packet sent with a source address of 132.1.6.6
*Oct 24 13:18:22.065: IP(0): s=132.1.6.6 (FastEthernet0/0.6)
d=228.28.28.28id=159, ttl=254, prot=1, len=114(100), mroute olist null
*Oct 24 13:18:22.069: IP(0): s=132.1.6.6 (FastEthernet0/0.26)
d=228.28.28.28id=159, ttl=254, prot=1, len=114(100), not RPF
interface.
RSRack1R6#ping 228.28.28.28 source f0/0.26
Packet sent with a source address of 132.1.26.6
*Oct 24 13:35:53.641: IP(0): s=132.1.26.6 (FastEthernet0/0.6)
d=228.28.28.28id=161, ttl=254, prot=1, len=114(100), not RPF interface
*Oct 24 13:35:53.645: IP(0): s=132.1.26.6 (FastEthernet0/0.26) d=
228.28.28.28 id=161, ttl=254, prot=1, len=114(100), mroute olist null.
your help is appreciated
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