Comparison of IGMPv1 IGMPv2 and IGMPv3

Table 16-5 compares the important features of IGMPvl, IGMPv2, and IGMPv3.

Feature

IGMPvl

IGMPv2

IGMPv3

First Octet Value for the Query Message

0x11

0x11

0x11

Group Address for the General Query

0.0.0.0

0.0.0.0

0.0.0.0

Destination Address for the General Query

224.0.0.1

224.0.0.1

224.0.0.1

Default Query Interval

60 seconds

125 seconds

125 seconds

First Octet Value for the Report

0x12

0x16

0x22

Group Address for the Report

Joining multicast group address

Joining multicast group address

Joining multicast group address and source address

Destination Address for the Report

Joining multicast group address

Joining multicast group address

224.0.0.22

Is Report Suppression Mechanism Available?

Yes

Yes

No

Can Maximum Response Time Be Configured?

No, fixed at 10 seconds

Yes, 0 to 25.5 seconds

Yes, 0 to 53 minutes

Can a Host Send a Leave Group Message?

No

Yes

Yes

Destination Address for the Leave Group Message

224.0.0.2

224.0.0.22

Can a Router Send a Group-Specific Query?

No

Yes

Yes

Can a Host Send Source-and Group-Specific Reports?

No

No

Yes

Can a Router Send Source- and Group-Specific Queries?

No

No

Yes

Rule for Electing a Querier

None—depends on multicast routing protocol

Router with the lowest IP address on the subnet

Router with the lowest IP address on the subnet

Compatible with Other Versions of IGMP?

No

Yes, only with IGMPv1

Yes, with both IGMPv1 and IGMPv2

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