Allied Telesis RAPIER I - Manual (Page 112)

112 MLD and MLD Snooping Enhancements Release Note
Software Version 2.8.1
C613-10477-00 REV B
MLD and MLD Snooping Enhancements
This Software Version includes the following enhancements to MLD and MLD
Snooping, in accordance with RFC 3810, Multicast Listener Discovery Version 2
(MLDv2) for IPv6:
■ MLD Packet Formats
■ ICMP type for MLDv2 Reports
■ MLD Snooping Group Membership Display
■ Change of Maximum Query Response Interval for MLD
This section describes the enhancements. The modified commands to
implement them are described in
Command Reference Updates .
MLD Packet Formats
MLD messages are now all sent with a hop limit of 1, a link-local source
address, and the other format requirements of RFC 3810.
This enhancement did not affect any commands.
ICMP type for MLDv2 Reports
MLD Report messages now have an ICMP type of 143 by default, as specified
by RFC 3810. The previous value was 255.
If you need to maintain backwards compatibility with earlier releases that use
an ICMP type of 255, you can do so by using the new v2draftcompat=yes
option in the command:
enable ipv6 mld interface=interface [v2draftcompat={yes|no}]
This enables the interface to receive MLDv2 reports with an ICMP type of 255.
The default for v2draftcompat is no.
Command Changes
The following table summarises the modified commands:
Command Change
enable ipv6 mld interface New v2draftcompat parameter
show ipv6 mld New V2 Draft Compatible parameter in output.