344
{
Floods all other types of received IPv6 PIM messages in the VLAN.
{
Forwards all multicast data to all router ports in the VLAN.
Each IPv6 PIM-capable router in the VLAN, whether interested in the multicast data or not, can
receive all multicast data and all IPv6 PIM messages except IPv6 PIM hello messages.
•
When the Layer 2 switch runs both MLD snooping and IPv6 PIM snooping, it does the following
actions:
{
Examines the received IPv6 PIM messages to determine which IPv6 PIM-capable router is
interested in the multicast data destined for a multicast group.
{
Adds the port that connects to the router to a multicast forwarding entry.
{
Forwards IPv6 PIM messages and the multicast data to only the router according to the
multicast forwarding entry. This saves network bandwidth.
For more information about MLD snooping and the router port, see "
For more information about IPv6 PIM, see "
."
Configuring IPv6 PIM snooping
When you configure IPv6 PIM snooping, follow these guidelines:
•
After you enable IPv6 PIM snooping for a VLAN, IPv6 PIM snooping works only on the member
interfaces of the VLAN.
•
IPv6 PIM snooping does not work in the sub-VLANs of a multicast VLAN. For more information
about IPv6 multicast VLAN, see "
Configuring IPv6 multicast VLANs
•
In a network with IPv6 PIM snooping enabled switches, configure the size of each join/prune
message no more than the path maximum transmission unit (MTU) on the IPv6 PIM-enabled
edge router on the receiver side. For more information about the join/prune messages, see
"
."
To configure IPv6 PIM snooping:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable IPv6 forwarding globally.
ipv6
Disabled by default.
3.
Enable MLD snooping globally and
enter MLD-snooping view.
mld-snooping
Disabled by default.
4.
Return to system view.
quit
N/A
5.
Enter VLAN view.
vlan
vlan-id
N/A
6.
Enable MLD snooping in the
VLAN.
mld-snooping enable
Disabled by default.
7.
Enable IPv6 PIM snooping in the
VLAN
pim-snooping ipv6 enable
Disabled by default.
Displaying and maintaining IPv6 PIM snooping
Task Command
Remarks
Display IPv6 PIM snooping
neighbor information.
display pim-snooping ipv6 neighbor
[ [
vlan
vlan-id
] [
slot
slot-number
] ] [
|
Available in any view.