Configuring Pim Snooping - HP 6125XLG Ip Multicast Configuration Manual

c. Forwards all multicast data to all router ports in the VLAN.
Each PIM router in the VLAN, whether interested in the multicast data or not, can receive all
multicast data and all PIM messages except PIM hello messages.
When the Layer 2 switch runs both IGMP snooping and PIM snooping, it performs the following
•
actions:
a. Examines whether a PIM router is interested in the multicast data addressed to a multicast
group according to the received PIM messages that the router send.
b. Adds only the ports that connect to the router and are interested in the data to a PIM snooping
routing entry.
c. Forwards PIM messages and multicast data to only the routers that are interested in the data,
which saves network bandwidth.
For more information about IGMP snooping and the router port, see
PIM snooping can run in PIM-SM and PIM-SSM networks. Do not configure PIM snooping in PIM-DM or
BIDIR-PIM networks. For more information about PIM, see

Configuring PIM snooping

To configure PIM snooping for a VLAN, you must enable IGMP snooping globally on the Layer 2 device,
and then enable IGMP snooping and PIM snooping for the VLAN.
After you enable PIM snooping for a VLAN, PIM snooping works only on the member interfaces of the
VLAN.
To configure PIM snooping:
Step
1. Enter system view.
2. Enable IGMP snooping
globally and enter
IGMP-snooping view.
3. Return to system view.
4. Enter VLAN view.
5. Enable IGMP snooping for
the VLAN.
6. Enable PIM snooping for the
VLAN.
7. (Optional.) Set the aging
time for the PIM snooping
global neighbor ports on the
new master device in IRF
master election.
8. (Optional.) Set the aging
time for the PIM snooping
global downstream ports
and global router ports on
the new master device in IRF
master election.
Command
system-view
igmp-snooping
quit
vlan vlan-id
igmp-snooping enable
pim-snooping enable
pim-snooping graceful-restart
neighbor-aging-time interval
pim-snooping graceful-restart
join-aging-time interval
35
"Configuring IGMP
"Configuring PIM."
Remarks
N/A
By default, IGMP snooping is
disabled.
N/A
N/A
By default, IGMP snooping is
disabled in a VLAN.
By default, PIM snooping is disabled
in a VLAN.
The default setting is 105 seconds.
A global neighbor port is a Layer 2
aggregate interface that acts as a
neighbor port.
The default setting is 210.
A global downstream port or a global
router port is a Layer 2 aggregate
interface that acts as a downstream
port or router port.
snooping."