MSDP Query

by Kumar on February 2, 2010

In MSDP is it required that the peering be done with another RP only ??? or supposing i have R1 in AS 100 (Being the Rp of that AS) has a MBGP peering with R2 in AS 200 (which is not the Rp on the AS). R3 which is behind R2 in AS 200 is the RP.for the AS

Thanks.

Tagged as: AS 200, MBGP peering, MSDP Query, R1, R3, RP

{ 2 comments… read them below or add one }

arul February 2, 2010 at 7:07 am

solved

is this what you were looking for

R5#ping 230.0.0.1 source lo0

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 230.0.0.1, timeout is 2 seconds:
Packet sent with a source address of 55.55.55.55

Reply to request 0 from 31.0.0.1, 328 ms
Reply to request 0 from 16.0.0.2, 536 ms

i did the follwoing changes to ur config

R3:
address-family ipv4 multicast
network 33.33.33.33 mask 255.255.255.255

becuase in R1:

*Dec 20 23:36:07.899: MSDP(0): 31.0.0.2: Peer RPF check failed for 33.33.33.33,
used IBGP route’s peer 0.0.0.0

Then

*Dec 20 23:40:35.035: MSDP(0): 31.0.0.2: Peer RPF check passed for 33.33.33.33,
used EMBGP peer

again in R3:

access-list 10 permit 224.0.0.0 7.255.255.255
access-list 10 permit 230.0.0.0 0.255.255.255

ip pim send-rp-discovery Loopback0 scope 255 group-list 10

also i added default route from R# to R5 to make sure the subnet reachable from remote ssites

by the way looks like you configured R1 and R6 with the group 230.0.0.1 becuase the replay above from both of them

good luck

please if helpful Rate

karan February 2, 2010 at 7:07 am

Re: MSDP Query

It Seems my MSDP peering are up but some how multicast traffic traffic is not reaching R6 & yes there is a second link connecting from R3 s1/0 to R1 s1/0 for rpf check.

R1 (sh ip msdp sum)

Peer Address AS State Uptime/ Reset SA Peer Name
Downtime Count Count
31.0.0.2 100 Up 05:15:52 0 0 ?
16.0.0.2 200 Up 01:38:30 0 0 ?
R1(config)#

R3 (sh ip msdp sum)

MSDP Peer Status Summary
Peer Address AS State Uptime/ Reset SA Peer Name
Downtime Count Count
31.0.0.1 100 Up 05:17:02 0 0 ?

R6 (sh ip msdp sum)

MSDP Peer Status Summary
Peer Address AS State Uptime/ Reset SA Peer Name
Downtime Count Count
16.0.0.1 200 Up 01:41:22 0 0 ?
R6#

R6 (sh ip bgp ipv4 multicast)

BGP table version is 4, local router ID is 66.66.66.66
Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,
r RIB-failure, S Stale
Origin codes: i – IGP, e – EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path
*>i55.55.55.0/24 16.0.0.1 0 100 0 100 i < ————————- Advertised in R5 bgp address family
R6#

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