Disabling A Port From Becoming A Dynamic Router Port; Configuring The Igmp Snooping Querier; Configuration Prerequisites - HP FlexFabric 5700 Series Configuration Manual

Enabling fast-leave processing on a port
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
3. Enable fast-leave processing
on the port.

Disabling a port from becoming a dynamic router port

A receiver host might send IGMP general queries or PIM hello messages for testing purposes. On the
Layer 2 device, the port that receives either of the messages becomes a dynamic router port. Before the
aging timer for the port expires, the following problems might occur:
• All multicast packets for the VLAN to which the port belongs flow to the port. Then, the port forwards
the data to attached receiver hosts. The receiver hosts will receive unexpected multicast data.
The port forwards the IGMP general queries or PIM hello messages to its upstream multicast routers.
•
These messages might affect the multicast routing protocol state (such as the IGMP querier or DR
election) on the multicast routers. This might further cause network interruption.
To solve these problems, you can disable the port from becoming a dynamic router port when receiving
either of the messages. This also improves network security and the control over receiver hosts.
To disable a port from becoming a dynamic router port:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
3. Disable the port from
becoming a dynamic router
port.

Configuring the IGMP snooping querier

This section describes how to configure an IGMP snooping querier.

Configuration prerequisites

Before you configure the IGMP snooping querier for the VLAN, complete the following tasks:
Enable IGMP snooping for the VLAN.
•
Determine the IGMP general query interval.
•
Command
system-view
interface interface-type
interface-number
igmp-snooping fast-leave [ vlan
vlan-list ]
Command
system-view
interface interface-type
interface-number
igmp-snooping router-port-deny
[ vlan vlan-list ]
23
Remarks
N/A
N/A
By default, fast-leave processing is
disabled.
Remarks
N/A
N/A
By default, a port can become a
dynamic router port.
This configuration does not affect
the static router port configuration.