Alcatel-Lucent OmniSwitch 10K - Page 104

OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
Alcatel-Lucent Page 104 of 148
IP: Time to Live = 1 (0x01)
IP: Protocol = IGMP
IP: Checksum = 0x…
IP: Source Address = 10.0.0.111
IP: Destination Address = 224.0.0.2
IP:
IGMP: ------ IGMP Header -----------
IGMP:
IGMP: Version = 2 (0x2)
IGMP: Type = Leave Group (0x17)
IGMP: Max Response Time = 100 (0x64)
IGMP: Checksum = 0xF68C
IGMP: Group = 239.1.1.1
IGMP Membership Query
Note:
 In IGMP version 2 a Membership Query message is always sent with 224.0.0.1 IP
destination address.
 An IGMP Membership Query message is used to verify if there are still active
subscribers registered for a specific group.
 IGMP Membership Query with 0.0.0.0 multicast group is called a General Query
message. It used for announcing querier’s availability.
MAC: ------ MAC Header ------
MAC:
MAC: Destination Address : 01 00 5E 00 00 01
MAC: Source Address : 00 00 00 00 0C 00
MAC:
IP: ------ IP Header -----------
IP:
IP: Version = 04 (0x04)
IP: Header Length = 20 (0x14)
IP: Differentiated Services Field = 0 (0x00)
IP: Type of Service = 00 (0x00)
IP: Total Length = 28 (0x001C)
IP: Identification = 0 (0x0000)
IP: Fragment Offset = 0
IP: Time to Live = 1 (0x01)
IP: Protocol = IGMP
IP: Checksum = 0x…
IP: Source Address = 10.0.0.1
IP: Destination Address = 224.0.0.1
IP:
IGMP: ------ IGMP Header -----------
IGMP:
IGMP: Version = 2 (0x2)
IGMP: Type = Membership Query (0x11)
IGMP: Max Response Time = 50 (0x32)
IGMP: Checksum = 0xEECD
IGMP: Group = 0.0.0.0
IGMP:
Example of IGMP version 3 messages
IGMP Membership Report type 3
Note:
IGMP Membership Report type 3 is used for registration of new subscribers. One message can be used
to register multiple multicast groups.
IGMP Membership Report in IGMP version 3 is always sent with 224.0.0.22 destination IP address.
MAC: ------ MAC Header ------
MAC: