Re: [ssm] IGMP v3 packets

Hitoshi Asaeda <Hitoshi.Asaeda@sophia.inria.fr> Mon, 23 February 2004 12:44 UTC

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Date: Mon, 23 Feb 2004 13:40:05 +0100 (MET)
Message-Id: <20040223.134005.68064480.Hitoshi.Asaeda@sophia.inria.fr>
To: asawari.teredesai@wipro.com
Cc: ssm@ietf.org
Subject: Re: [ssm] IGMP v3 packets
From: Hitoshi Asaeda <Hitoshi.Asaeda@sophia.inria.fr>
In-Reply-To: <7F396B9772328640B7593FA817EEEDADD03B4A@blr-m3-msg.wipro.com>
References: <7F396B9772328640B7593FA817EEEDADD03B4A@blr-m3-msg.wipro.com>
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> I want to refer IGMPv3 Report and Query captured packets. Packet format
> is fine. I got that from RFC. But I wish to see an example of V3 Report
> and Query packet. Especially when number of group records and number
> source records are greater than 1.

An attached log file was made by tcpdump on my machine (NetBSD).
("**** ****" are the address of my host and router.)

Description:
1. Host-X made an include mode join with 3 sources for one multicast
   addr
   IN (192.168.{27.108,30.249,61.65}, 232.1.1.1)
2. Host-X made an exclude mode join with 2 sources for one multicast
   addr
   EX (192.168.{29.96,32.236}, 232.1.1.2)
(Robustness value is 2 for each)
3. Host-X received a general query from Router-X
4. Host-x responded to report both of IN and EX status.

Hope this helps.
--
Hitoshi Asaeda