HPE 5820X Series, Configuration Manual

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{
Maintains the router ports according to the received PIM hello messages that PIM-capable
routers send.
{
Floods all other types of received PIM messages in the VLAN.
{
Forwards all multicast data to all router ports in the VLAN.
Each PIM-capable 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 does the following
actions:
{
Examines the received PIM messages to determine which PIM-capable routers are
interested in the multicast data addressed to a multicast group.
{
Adds only the ports that connect to these routers to the multicast forwarding entry for the
multicast group.
{
Forwards PIM messages and multicast data to only the routers that are interested in the
data. This saves network bandwidth.
For more information about IGMP snooping and the router port, see " Configuring IGMP snooping ."
For more information about PIM, see " Configuring PIM ."
Configuring PIM snooping
When you configure PIM snooping, follow these guidelines:
•
After you enable PIM snooping for a VLAN, PIM snooping works only on the member interfaces
of the VLAN.
•
PIM snooping does not work in the sub-VLANs of a multicast VLAN. For more information about
multicast VLAN, see "
Configuring multicast VLANs ."
•
In a network with PIM snooping enabled switches, configure the size of each join/prune
message no more than the path MTU on the PIM-enabled edge router on the receiver side. For
more information about the join/prune messages, see "
Configuring PIM ."
To configure PIM snooping:
Step Command Remarks
1.
Enter system view.
system-view
N/A
2.
Enable IGMP snooping globally and
enter IGMP-snooping view.
igmp-snooping
Disabled by default.
3.
Return to system view.
quit
N/A
4.
Enter VLAN view.
vlan vlan-id
N/A
5.
Enable IGMP snooping in the VLAN.
igmp-snooping enable
Disabled by default.
6.
Enable PIM snooping in the VLAN.
pim-snooping enable
Disabled by default.
Displaying and maintaining PIM snooping
Task Command Remarks
Display PIM snooping neighbor
information.
display pim-snooping neighbor
[ [
vlan
vlan-id
] [
slot
slot-number
] ] [
|
{
begin
|
Available in any view.