From: Gupta, Gopal (NWCC) (gopal.gupta@hp.com)
Date: Wed Dec 05 2007 - 13:23:05 ART
Hi Chan,
i agree with you that using static RP on R5 or create an tunnel between R5 &
R4 can overcome this problem...
but my problem is it is happening without tunnel without static RP and without
auto RPListener (ALL being in DENSE mode)
Thanks
Gopal
________________________________
From: Chan Hong [mailto:chan_hong33@yahoo.com]
Sent: Wednesday, December 05, 2007 21:05
To: Gregory Gombas; Gupta, Gopal (NWCC)
Cc: Cisco certification
Subject: Re#: PIM Auto-RP
Dear Gopal,
I think R5 can't know the RP address of the groups 224.0.1.39&40. Do you think
that using static RP on R5 or create an tunnel between R5 & R4 can overcome
this problem?
Dear Gombas,
With frame-relay inverse arp, dynamic mapping occur on frame-relay circuit. In
dense mode, the multicast traffic just push to the interface and every mapping
are able to receive the multicast traffic. In sparse mode, without ip pim nbma
, all mapping should able to receive the multicast traffic also.
Please correct me if wrong.
Thanks & Regards,
Howard
----- `]<~T-<~ ----
<D<~HK)s Gregory Gombas <ggombas@gmail.com>
JU<~HK "Gupta, Gopal (NWCC)" <gopal.gupta@hp.com>
811>(CC) Cisco certification <ccielab@groupstudy.com>
wKMHUFZ)s 2007 Dj 12TB 5 HU PGFZH} OBNg 10:06:49
Vwn}#: Re: PIM Auto-RP
Hi Gopal,
Is it possible the MA has a 0.0.0.0 mapping for R5 in its frame relay
mapping table and its multicasting out the DLCI?
I've seen similar issues when forgetting to disable frame-relay inverse
arp...
On Dec 4, 2007 7:41 AM, Gupta, Gopal (NWCC) <gopal.gupta@hp.com> wrote:
> Hi Gurus
> There is one question, am scratching my head
>
> Topology
>
> R5->R1->R4
> |
> R3
> |
> R2
>
> R4 is MA and R3 is RP
>
> Question is w/o using IP Pim autorp listener and all interfaces in
> Sparse mode, R4 is still sending the group-RP mappings to all the
> Routers including R5; is this the default behavior ??
> The problem is R5 should not recv these mappings from R4 coz all is
> running in Sparse mode.
>
> R5:-->
>
> R5#sh ip mr
>
> (*, 224.0.1.40), 01:10:44/stopped, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial1/0.504, Forward/Sparse, 01:10:44/00:01:32
>
> (204.12.1.4, 224.0.1.40), 01:10:43/00:02:54, flags: PLTX
> Incoming interface: Serial1/0.504, RPF nbr 155.1.15.1
> Outgoing interface list: Null
>
> R5#sh ip pim rp ma
> PIM Group-to-RP Mappings
>
> Group(s) 224.0.0.0/4
> RP 150.1.3.3 (?), v2v1
> Info source: 204.12.1.4 (?), elected via Auto-RP
> Uptime: 01:10:47, expires: 00:02:49
>
> As far as i have studied till now is we need either PIM Sparse-dense
> mode or pim AutoRP Listener for getting group to RP mappings and it is
> working W/O those commands.
> Hope you will throw some light on this.
>
> Many Thanks,
> Gops
>
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