Configuring Ipv6 Pim Snooping - HP FlexNetwork 7500 Series Configuration Manual

b. Floods all other types of received IPv6 PIM messages except PIM hello messages in the
VLAN.
c. 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 performs the
following actions:
a. Examines whether an IPv6 PIM router is interested in the multicast data destined for a
multicast group according to the received IPv6 PIM messages that the router sends.
b. Adds only the ports that connect to the router and are interested in the data to an IPv6 PIM
snooping routing entry.
c. Forwards IPv6 PIM messages and the multicast data only to the router according to the
multicast forwarding entry, which saves network bandwidth.
For more information about MLD snooping and the router port, see
IPv6 PIM snooping can run in IPv6 PIM-SM and IPv6 PIM-SSM networks. Do not configure IPv6 PIM
snooping in IPv6 PIM-DM or IPv6 BIDIR-PIM networks. For more information about IPv6 PIM, see
"Configuring IPv6

Configuring IPv6 PIM snooping

IMPORTANT:
• Do not configure IPv6 PIM snooping in secondary VLANs because IPv6 PIM snooping does not
take effect in secondary VLANs. For more information about secondary VLANs, see Layer
2—LAN Switching Configuration Guide.
• Make sure the IPv6 packet length of join/prune messages is less than the MTU of receiver-side
IPv6 PIM interfaces that connect to IPv6 PIM snooping devices. Otherwise, IPv6 multicast data
might not be correctly forwarded. The IPv6 packet length of join/prune messages is the packet
length of join/prune messages plus the IPv6 header length. To set the maximum size of
join/prune messages, use the jp-pkt-size command. To set the MTU for an Ethernet interface,
use the mtu command. For more information about the command, see Interface Command
Reference.
To configure IPv6 PIM snooping for a VLAN, enable MLD snooping globally on the Layer 2 device,
and enable MLD snooping and IPv6 PIM snooping for the VLAN.
After you enable IPv6 PIM snooping for a VLAN, IPv6 PIM snooping works only on the member
interfaces of the VLAN.
To configure IPv6 PIM snooping:
Step
Enter system view.
1.
Enable MLD snooping
2.
globally and enter MLD
-snooping view.
Return to system view.
3.
Enter VLAN view.
4.
Enable MLD snooping for
5.
the VLAN.
Enable IPv6 PIM
6.
snooping for the VLAN.
PIM."
Command
system-view
mld-snooping
quit
vlan vlan-id
mld-snooping enable
ipv6 pim-snooping enable
256
"Configuring MLD snooping."
Remarks
N/A
By default, MLD snooping is
disabled.
N/A
N/A
By default, MLD snooping is
disabled in a VLAN.
By default, IPv6 PIM snooping is
disabled in a VLAN.