From: Scott Morris (swm@emanon.com)
Date: Sat Feb 12 2005 - 16:59:30 GMT-3
:)
R3 was participating in the multicast scenario as an RP. So by virtue of
that, it would be joined.
The IGMP command is a mechanism to have routers join a group as if they
received an IGMP message from a host. They would then join into the tree
towards the RP.
So, there really isn't a need for us to pretend that the RP received any
IGMP messages directly since it joins of its own choice due to its role as
RP.
Bear in mind also that this chapter was not written with 12.2T IOS in mind,
so you may find other issues such as the RP not having an RP command set
configured.... Publishers don't let us update chapters/books with every new
release, and I'm sure you wouldn't want to purchase new books that often
either!
HTH,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Idris, Hashiru Aminu
Sent: Saturday, February 12, 2005 2:23 PM
To: ccielab@groupstudy.com
Subject: ip igmp join-group xxx.xxx.xxx.xxx (in solie vol II)
In LAB 5 of the solie book , the multicast chapter, in the scenario Scott
indicted that the above command should be applied to some selected
interfaces in the VLANS i.e VLANs B & 60. the little confussion here is
that the command was not applied to R3 (the selected RP) now, does this
indictes that all RPs should not have this command every time or is there
any other reason why the router escapes that command or a typo error.
hope someone that hash done the LAB could respond, or the author of the
chapter himself.
TIA
Hashiru
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