3Com Switch 8800 Advanced Software V5 Configuration Guide

640 CHAPTER 44: MLD CONFIGURATION
Figure 194 Format of MLDv1 query message
Table 29 describes the fields in Figure 194.
Protocols and Standards MLD-related specifications are described in the following documents:
■ RFC 2710: Multicast Listener Discovery (MLD) for IPv6
■ RFC 3810: Multicast Listener Discovery Version 2 (MLDv2) for IPv6
Configuration Task
List
Tabl e 29 Description on fields in an MLD query message
Field Description
Type Message type. 130 stands for query message;
131 stands for report message; 132 for leave
group message.
Code Code: initialized to 0 by the sender and ignored
by receivers
Checksum Standard IPv6 checksum
Maximum Response Delay Maximum response delay allowed before a host
sends a report message
Reserved Reserved field: initialized to 0 by the sender and
ignored by receivers
Multicast Address ■ This field is set to 0 in a general query
message.
■ It is set to a specific IPv6 multicast address in
a multicast-address-specific query message.
■ It is sent to the IPv6 multicast address that
the message sender joins in or leaves
Multicast Address (128 bits)
Type = 130 Code
0 7 15 31
Checksum
Maximum Response Delay Reserved
34
Task Remarks
“Configuring Basic Functions of MLD”
on page 641
“Enabling MLD” on
page 641
Required
“Configuring the MLD
Version” on page 641
Option
“Adjusting MLD Performance” on page
642
“Configuring MLD
Message Options” on
page 642
Optional
“Configuring MLD
Timers” on page 643
Optional