Disabling A Port From Becoming A Dynamic Router Port; Configuring The Mld 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 MLD general queries or IPv6 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 IPv6 multicast data for the VLAN to which the port belongs flows to the port. Then, the port
•
forwards the data to attached receiver hosts. The receiver hosts will receive unexpected IPv6
multicast data.
• The port forwards the MLD general queries or PIM hello messages to its upstream multicast routers.
These messages might affect the multicast routing protocol state (such as the MLD 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 MLD snooping querier

This section describes how to configure an MLD snooping querier.

Configuration prerequisites

Before you configure the MLD snooping querier for a VLAN, complete the following tasks:
Enable MLD snooping for the VLAN.
•
Command
system-view
interface interface-type
interface-number
mld-snooping fast-leave [ vlan
vlan-list ]
Command
system-view
interface interface-type
interface-number
mld-snooping router-port-deny
[ vlan vlan-list ]
69
Remarks
N/A
N/A
By default, fast-leave processing is
disabled on a port.
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.