From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Thu Jun 22 2006 - 12:15:57 ART
George,
First issue the "no ip mroute-cache" command on all interfaces
running PIM. Next issue the "debug ip mpacket" command and on a hop by
hop basis track the multicast flow as it moves through the network.
Based on the IIL and the OIL you should be able to tell what's going on.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> george stanza
> Sent: Thursday, June 22, 2006 12:23 AM
> To: Cisco certification
> Subject: sparse-dense mode question !! (IE Lab 1)
>
> hello multicast experts !!
>
> here is my topology...R2 is a hub for R1 & R3 and R3 is a hub for R5 &
R4
> and only the links in Red (color) are running sparse-dense mode. R5 is
> joined group 226.26.26.26. I am some how not able to ping the group
from
> R2.I have connectivity to all the interfaces.. R5 is reachable from R2
via
> R1, but the mcast static route is configured thru R3. And R3's loop 0
is
> the
> RP..Any insight ?
>
> R1
> /
> Ether / Ethernet
> ------R2 R5 -----------
> \ /
> (serial) \ / (serial)
> R3
> \
> \
> R4
>
>
> R2:
> ===
>
> r2(config)#do sh ip pim rp mapping
> PIM Group-to-RP Mappings
> This system is an RP-mapping agent (Loopback0)
>
> Group(s) 224.0.0.0/4
> RP 150.1.3.3 (?), v2v1
> Info source: 150.1.3.3 (?), elected via Auto-RP
> Uptime: 00:44:25, expires: 00:02:31
>
>
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