From: Henk de Tombe (henk.de.Tombe@qi.nl)
Date: Mon Apr 23 2007 - 09:39:37 ART
Hi,
Configure the commando no ip mroute-cache under each interface where
multicast packets are coming through. By enabling this command you force
process switching for multicast traffic. Process switched packets can be
capture by the command 'debug ip mpacket'
Try to find out where multicastpackets are dropped and if the source has
registered itself properly at the sender and apply the appropriate
command(s).
Please send us the configs if you need more help.
Regards,
Henk
-----Oorspronkelijk bericht-----
Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens Shamin
Verzonden: maandag 23 april 2007 10:16
Aan: iyux2000@gmail.com
CC: ccielab@groupstudy.com
Onderwerp: Re: Multicast problem, help needed
Hi,
Do you have the ip nbma-mode on R3 FR interface, If it is a Multipoint
interface.
Everything else looks normal to me.
Regards
Shamin
On 4/22/07, iyux2000@gmail.com <iyux2000@gmail.com> wrote:
>
> Hi, group
>
> I'am working on a topology as follows. All routers join in OSPF
area 0.
> R1 is the RP for group 224.1.1.1, and R1 joins 224.1.1.1 group on
> loopback0.
> I'am using AUTORP sparse-dense-mode, R4 is MA.
>
>
> R1(s0.1 p2p)
(s0/0)R6
> \ /
> FR--(s0/2.1 multipoing)R4(fa0/1)--(fa3/0)R3(s0/1) - FR
> | \
> R2 (s0/0.1
> p2p) (s0/1)R7
>
> After i configured, i have following situations:
>
> R3,R6 and R7 can not ping 224.1.1.1, but they can receive the correct
> mapping informations in "show ip pim rp mapping".
> But sh ip mroute 224.1.1.1 on R3:
> R3#sh ip mroute 224.1.1.1
>
> (*, 224.1.1.1), 00:00:26/stopped, RP 8.8.1.1, flags: SP
> Incoming interface: FastEthernet3/0, RPF nbr 8.8.20.4
> Outgoing interface list: Null
>
> (8.8.20.4, 224.1.1.1), 00:00:26/00:02:33, flags: PT
> Incoming interface: FastEthernet3/0, RPF nbr 0.0.0.0
> Outgoing interface list: Null
>
> (8.8.30.3, 224.1.1.1), 00:00:15/00:03:23, flags: T
> Incoming interface: Serial0/1, RPF nbr 0.0.0.0
> Outgoing interface list:
> FastEthernet3/0, Forward/Sparse-Dense, 00:00:15/00:03:14
>
> The incoming interface and outgoing interface pair looks fine.
>
> R3#sh ip pim rp mapp
> PIM Group-to-RP Mappings
>
> Group(s) 224.1.1.1/32
> RP 8.8.1.1 (?), v2v1
> Info source: 8.8.4.4 (?), elected via Auto-RP
> Uptime: 00:13:00, expires: 00:02:48
>
> The mapping info on R3 also looks fine.
>
> R6 and R7 has the same problems as R3.
>
> What's wrong in my network, i'am wondering if i hit a IOS bug or
> something?
>
> Any recommedations and suggestions are highly appreciated. If you need
> more information for troubleshooting, please let me know.
>
> Thank you very much for your kindly help.
>
> Cheers.
>
>
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