From: srdja blagojevic (srdja1@pexim.co.yu)
Date: Mon Jul 31 2006 - 15:43:04 ART
Anderson,
this is how I see task 6.4:
first part of task: this part can be done with both commands (join-group,
static-group) because you only need to establish multicast tree toward
testing application host. It does not matter if it can generate IGMP join,
because both commands will make this interface member of the OIL list, and
testing host will receive multicast traffic in any case.
second part of the task: this part force you to use static-group command,
because requirement forbid to "process switch this traffic". So you must use
static-group which is fast switched, instead of join-group which is process
switched (from DOC CD: "IP packets that are addressed to the group address
are passed to the IP client process in the Cisco IOS software").
HTH,
Srdja
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Anderson Mota Alves
Sent: Monday, July 31, 2006 16:21
To: shankyz@gmail.com
Cc: ccielab@groupstudy.com
Subject: Re: IEWB - Lab 6 - Task 6.4 (Multicast Testing)
Hi Shanky,
That's my understanding as well, ip igmp join-group the router will process
and respond to ICMP request to the group and when you configure using ip
igmp static-group the router won't process it and will pass directly the
requests to the source of the multicast group using fast switch process.
So since the question advises you to configure and not allow SW1 to process
switch the traffic and also says that that the application he is using will
not be generating IGMP join messages so for testing purposes I think the
only way is to configure for the router to respond to ICMP requests is using
"ip igmp join-group" but the solution says otherwise.
>From: Shanky <shankyz@gmail.com>
>Reply-To: Shanky <shankyz@gmail.com>
>To: "Anderson Mota Alves" <mota_anderson@hotmail.com>
>CC: ccielab@groupstudy.com
>Subject: Re: IEWB - Lab 6 - Task 6.4 (Multicast Testing)
>Date: Mon, 31 Jul 2006 19:39:27 +0530
>
>Hi,
>
>In my understanding,
>
>ip igmp join-group will cause the router to process the multicast
>traffic ip igmp static-group will cause the router to flood the traffic
>on to the multicast enabled interfaces but not process it.
>
>
>
>
>On 7/31/06, Anderson Mota Alves <mota_anderson@hotmail.com> wrote:
> >
> > Hi Brians,
> >
> > The question is asking you to configure the igmp group 225.25.25.25
> > for testing purposes, to be configured on SW1 and to not allow SW1
> > to
>process
> > switch this traffic:
> >
> > From my understanding in order for you to enable a group to be fast
>switch
> > process you need to configure it with command "ip igmp static-group"
> > so
>I
> > configured using the command "ip igmp join-group" but when I took a
> > look in the solution for this task the solution was pointing the
> > correct answer being "ip igmp static-group".
>
>
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/himc_
r/mlt_i1h.htm#wp1130052
>
>Thanks
>
>Shanky
>
>Is the solution wrong or I may be missing something here?
> >
> > Thanks,
> >
> > Andy
> >
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