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Re: [ssm] IGMP v3 packets
> 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
12:38:57.315665 Host-X > IGMP.MCAST.NET: igmp v3 report, 1 group record(s) [tos 0xc0] [ttl 1]
46c0 0034 6190 0000 0102 5fcf **** ****
e000 0016 9404 0000 2200 3658 0000 0001
0500 0003 e801 0101 c0a8 1b6c c0a8 1ef9
c0a8 3d41
12:38:58.180050 Host-X > IGMP.MCAST.NET: igmp v3 report, 1 group record(s) [tos 0xc0] [ttl 1]
46c0 0034 6192 0000 0102 5fcd **** ****
e000 0016 9404 0000 2200 3658 0000 0001
0500 0003 e801 0101 c0a8 1b6c c0a8 1ef9
c0a8 3d41
12:39:09.052062 Host-X > IGMP.MCAST.NET: igmp v3 report, 1 group record(s) [tos 0xc0] [ttl 1]
46c0 0030 6193 0000 0102 5fd0 **** ****
e000 0016 9404 0000 2200 315b 0000 0001
0400 0002 e801 0102 c0a8 1d60 c0a8 20ec
12:39:09.380082 Host-X > IGMP.MCAST.NET: igmp v3 report, 1 group record(s) [tos 0xc0] [ttl 1]
46c0 0030 6194 0000 0102 5fcf **** ****
e000 0016 9404 0000 2200 315b 0000 0001
0400 0002 e801 0102 c0a8 1d60 c0a8 20ec
12:39:15.119926 Router-X > ALL-SYSTEMS.MCAST.NET: igmp query v3 [tos 0xc0] [ttl 1]
45c0 0020 0008 0000 0102 5689 **** ****
e000 0001 1164 ec9b 0000 0000 0200 0000
0000 0000 0000 0000 0000 0000 0000
12:39:21.180055 Host-X > IGMP.MCAST.NET: igmp v3 report, 2 group record(s) [tos 0xc0] [ttl 1]
46c0 0044 6197 0000 0102 5fb8 **** ****
e000 0016 9404 0000 2200 8fb3 0000 0002
0100 0003 e801 0101 c0a8 1b6c c0a8 1ef9
c0a8 3d41 0200 0002 e801 0102 c0a8 1d60
c0a8 20ec