MLD Packet Structure

Unlike IGMPv2, MLD uses ICMPv6 messages instead of defining a separate message structure. Figure 7-1 shows the structure of an MLD message packet.

Figure 7-1. The structure of an MLD message packet

An MLD message packet consists of an IPv6 header, a Hop-by-Hop Options extension header, and the MLD message. The Hop-by-Hop Options extension header contains the IPv6 Router Alert Option described in RFC 2711. It is used to ensure that routers process MLD messages that are sent to multicast addresses for which the router is not a group member.



Understanding IPv6
Understanding Ipv6
ISBN: 0735612455
EAN: 2147483647
Year: 2005
Pages: 124
Authors: Joseph Davies

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