Enabling Mld; Implementation Information; Related Mld Configuration Tasks - Dell Force10 C150 Configuration Manual

Figure 27-3. MLDv2 Multicast Listener Report
Preamble
Version Traffic Class
(6)

Implementation Information

• 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

Enabling MLD

MLD is enabled automatically when IPv6 PIM is enabled.

Related MLD Configuration Tasks

• Change MLD Timer Values on page 609
• Reduce Host Response Burstiness on page 609
• Reduce Leave Latency on page 609
• Configure a Static Group on page 610
• Clear MLD Groups on page 611
• Change the MLD Version on page 611
608 | Multicast Listener Discovery
Start Frame Source MAC
Destination MAC
Delimiter
Flow Label
Payload Length Next Header
(0)
Type Code
Code: 130: Multicast Listener Query
131: Multicast Listener Report
132: Multicast Listener Done
143: Version 2 Multicast Listener Report
ipv6 mld query-interval
,
IPv6 Packet
Ethernet Type
Header Extension
Hop Limit Next Header
Length
(1) (58)
(0)
Checksum Reserved N
(0)
Aux Data Length
Record Type
(0)
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
ipv6 mld query-max-resp-time
,
Padding
FCS
Options
ICMPv6 Packet
(Router Alert)
Multicast Address Record
N
Multicast Address Source Addresses
.
MLD 003