309
[SwitchA] acl ipv6 basic 2001
[SwitchA-acl-ipv6-basic-2001] rule permit source ff1e::101 128
[SwitchA-acl-ipv6-basic-2001] quit
[SwitchA] mld-snooping
[SwitchA–mld-snooping] group-policy 2001 vlan 100
[SwitchA–mld-snooping] quit
# Configure HundredGigE 1/0/3 and HundredGigE 1/0/4 as simulated member hosts to join
IPv6 multicast group FF1E::101.
[SwitchA] interface hundredgige 1/0/3
[SwitchA-HundredGigE1/0/3] mld-snooping host-join ff1e::101 vlan 100
[SwitchA-HundredGigE1/0/3] quit
[SwitchA] interface hundredgige 1/0/4
[SwitchA-HundredGigE1/0/4] mld-snooping host-join ff1e::101 vlan 100
[SwitchA-HundredGigE1/0/4] quit
Verifying the configuration
# Send MLD reports from Host A and Host B to join IPv6 multicast groups FF1E::101 and FF1E::202.
(Details not shown.)
# Display brief information about dynamic MLD snooping group entries for VLAN 100 on Switch A.
[SwitchA] display mld-snooping group vlan 100
Total 1 entries.
VLAN 100: Total 1 entries.
(::, FF1E::101)
Host ports (2 in total):
HGE1/0/3 (00:03:23)
HGE1/0/4 (00:04:10)
The output shows the following information:
•
Host A and Host B have joined IPv6 multicast group FF1E::101 through the member ports
HundredGigE 1/0/4 and HundredGigE 1/0/3 on Switch A, respectively.
•
Host A and Host B have failed to join the multicast group FF1E::202.
Static port configuration example (for VLANs)
Network requirements
•
Router A runs MLDv1 and acts as the MLD querier. Switch A, Switch B, and Switch C run
MLDv1 snooping.
•
Host A and Host C are permanent receivers of IPv6 multicast group FF1E::101.
Configure static ports to meet the following requirements:
•
To enhance the reliability of IPv6 multicast traffic transmission, configure HundredGigE 1/0/3
and HundredGigE 1/0/5 on Switch C as static member ports for IPv6 multicast group
FF1E::101.
•
Suppose the STP runs on the network. To avoid data loops, the forwarding path from Switch A
to Switch C is blocked. IPv6 multicast data flows to the receivers attached to Switch C only
along the path of Switch A—Switch B—Switch C. When this path is blocked, a minimum of one
MLD query-response cycle must be completed before IPv6 multicast data flows to the receivers
along the path of Switch A—Switch C. In this case, the multicast delivery is interrupted during