From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Tue Apr 15 2008 - 11:57:45 ART
mtrace works..useful command that!
Gary
----- Original Message -----
From: "Ronnie Angello" <ronnie.angello@gmail.com>
To: "Matt Bentley" <mattdbentley@gmail.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, April 15, 2008 3:54 PM
Subject: Re: Multicast Routing Table Woes
> mtrace is a good one too, at least it was very helpful for me.
>
> On Tue, Apr 15, 2008 at 10:45 AM, Sadiq Yakasai <sadiqtanko@gmail.com>
> wrote:
>> Hi Guys,
>>
>> Just to add a little to what you keep an eye out for Matt, "debug ip
>> pim" would be another resourceful debug to run when you are running
>> PIM. The FLAGS. I cannot over emphasize the importance of
>> understanding all the Flags. It always points you to a right direction
>> when troubleshooting an mrouting issue.
>>
>> As for the mroute table:
>>
>> (*, 225.0.0.1), 00:22:48/stopped, RP 15.15.15.15, flags: SJCLF
>> Incoming interface: FastEthernet0/3, RPF nbr 3.3.3.1
>> Outgoing interface list:
>> FastEthernet0/2, Forward/Sparse, 00:19:41/00:03:16, H
>>
>> This entry tells you this router knows about the Group (225.0.0.1). It
>> knows how to get to it (Incoming Interface, F0/3) and has someone
>> already joined this group downstream (Outgoing Interface List, F0/2).
>>
>> (2.2.2.2, 225.0.0.1), 00:00:06/00:02:53, flags: LFT
>> Incoming interface: FastEthernet0/1, RPF nbr 0.0.0.0, Registering
>> Outgoing interface list:
>> FastEthernet0/2, Forward/Sparse, 00:00:06/00:02:53, H
>>
>> This entry tells you someone has already pushed traffic for the group.
>> And the mcast traffic is from 2.2.2.2, coming in through F0/1 and
>> going towards someone who is listening for the group, having joined
>> the group ealier, via F0/2.
>>
>> Anyways, keep doing it over and over and over again, and it will all
>> makes sense eventually. One thing at a time.
>>
>> HTH
>>
>> Sadiq
>>
>>
>>
>> Pass the CCIE in six weeks, Guaranteed!
>> http://www.certscience.com/CCIE
>> _______________________________________________________________________
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>>
>>
>>
>>
>
>
>
> --
> Ronald Angello
> CCIE #17846
>
>
> Pass the CCIE in six weeks, Guaranteed!
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