From: Roman Rodichev (roman@iementor.com)
Date: Sun Mar 29 2009 - 15:50:43 ART
Why are you checking RPF for the destination 172.9.11.1, aren't you
interested in RPF check for the source 172.9.48.4? If 172.9.11.1 is a
multicast receiver, you don't really care about RPF checks for that IP
address, as you'll never see that IP anywhere in the multicast packet.
Something else could be wrong in your case. Which PIM mode have you
configured on your customer (PE-CE) interfaces? If sparse mode, is RP known?
"show ip pim vrf ABC rp mapping"? Do you have any static mroutes configured
in vrf ABC? Is MDT running? "show ip pim mdt bgp"
Roman Rodichev
5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider)
Instructor, Content Developer
ieMentor Corporation http://www.iementor.com
Y!M: roman7927
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mike
Sent: Sunday, March 29, 2009 10:39 AM
To: ccielab@groupstudy.com
Subject: VPN multicast RPF lookup failure
Hi,
I have a RPF lookup issue in my VPN multicast configuration.
From the vrf table, there is a route for the destination 172.9.11.1. Just
don't know why it fail the RPF lookup.
R8#
02:39:35: IP(1): s=172.9.48.4 (Ethernet1/0.48) d=224.1.1.1 id=186, ttl=254,
prot=1, len=114(100), RPF lookup failed for source or RP
R8#show ip rpf vrf ABC 172.9.11.1
RPF information for ? (172.9.11.1) failed, no route exists
R8#
R8#show ip route vrf ABC
Routing Table: ABC
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static
route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.9.0.0/24 is subnetted, 3 subnets
C 172.9.48.0 is directly connected, Ethernet1/0.48
B 172.9.11.0 [20/0] via 10.10.7.7, 01:12:05
B 172.9.16.0 [20/0] via 10.10.7.7, 01:12:05
10.0.0.0/32 is subnetted, 1 subnets
R 10.10.4.4 [120/1] via 172.9.48.4, 00:00:08, Ethernet1/0.48
R8#
R8#show ip route vrf ABC 172.9.11.1
Routing entry for 172.9.11.0/24
Known via "bgp 89", distance 20, metric 0
Tag 267, type external
Redistributing via rip
Advertised by rip metric 1
Last update from 10.10.7.7 01:11:52 ago
Routing Descriptor Blocks:
* 10.10.7.7 (Default-IP-Routing-Table), from 10.10.7.7, 01:11:52 ago
Route metric is 0, traffic share count is 1
AS Hops 1
Route tag 267
MPLS Required
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