H3C Technologies H3C S12500 Series Switches - Manual (Page 314)

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Enabling MLD snooping proxying
The MLD snooping proxying function operates on a per-VLAN basis. After you enable the function in a
VLAN, the device operates as the MLD snooping proxy for the downstream hosts and upstream router in
the VLAN.
To enable MLD snooping proxying in a VLAN:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VLAN view. vlan vlan-id N/A
3. Enable MLD snooping
proxying in the VLAN.
mld-snooping proxying enable Disabled by default.
Configuring the source IPv6 address for the MLD messages sent
by the proxy
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VLAN view. vlan vlan-id N/A
3. Configure the source IPv6
address for the MLD
reports sent by the proxy.
mld-snooping report
source-ip { ipv6-address |
current-interface }
The default is
FE80::02FF:FFFF:FE00:0001.
4. Configure the source IPv6
address for the MLD done
messages sent by the
proxy.
mld-snooping done source-ip
{ ipv6-address |
current-interface }
The default is
FE80::02FF:FFFF:FE00:0001.
Configuring an MLD snooping policy
Before you configure an MLD snooping policy, complete the following tasks:
• Enable MLD snooping for the VLAN.
• Determine the IPv6 ACL for IPv6 multicast group filtering.
• Determine the maximum number of IPv6 multicast groups that a port can join.
Configuring an IPv6 multicast group filter
On a MLD snooping-enabled switch, you can configure an IPv6 multicast group filter to limit multicast
programs available to different users.
In an application, when a user requests a multicast program, the user's host initiates an MLD report. After
receiving this report message, the switch resolves the IPv6 multicast group address in the report and looks
up the ACL. If a match is found to permit the port that received the report can join this IPv6 multicast group,
the switch creates an MLD snooping forwarding entry for the IPv6 multicast group and adds the port to