Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 590

www.dell.com | support.dell.com Figure 30-3. MLDv2 Multicast Listener Report Preamble Start Frame Delimiter Destination MAC Source MAC Ethernet Type IPv6 Packet Padding FCS Version (6) Traffic Class Flow Label Payload Length Next Header (0) Hop Limit (1) Next Header (58) Header Extension Length (0) Options (Router Alert) ICMPv6 Packet Type Code (0) Checksum Reserved N Multicast Address Record Code: 130: Multicast Listener Query 131: Multicast Listener Report 132: Multicast Listener Done 143: Version 2 Multicast Listener Report Record Type Aux Data Length N (0) Multicast Address Source Addresses Code: 1: MODE_IS_INCLUDE 2: MODE_IS EXCLUDE 3: CHANGE_TO_INCLUDE 4: CHANGE_TO_EXCLUDE 5: ALLOW_NEW_SOURCES 6: BLOCK_OLD_SOURCES Implementation Information MLD 003 • In FTOS versions prior to 8.3.1.0: when a switch on which MLD snooping is enabled acts as Querier, queries sent to a specific port (in the event of a port enable, MLD leave, or MLD join), were sent with an all-zero (::) IPv6 source address. This might unintentionally indicate to another MLD switch that it is elected the Querier. Beginning with FTOS version 8.3.1.0, all queries are flooded on the VLAN so that the IPv6 source address is correctly included in all queries. • MLDv2 Snooping ignores sources specified in exclude reports; all exclude (S,G) reports are treated as exclude (*,G). • The following querier commands are available for Layer 3 MLD and MLD Snooping: ipv6 mld last-member-query-interval, ipv6 mld query-interval, ipv6 mld query-max-resp-time. Enabling MLD MLD is enabled automatically when IPv6 PIM is enabled. Related MLD Configuration Tasks • Change MLD Timer Values • Reduce Host Response Burstiness • Reduce Leave Latency • Configure a Static Group • Clear MLD Groups • Change the MLD Version • Debug MLD • MLD Snooping 590 | Multicast Listener Discovery