Disabling A Port From Becoming A Dynamic Router Port; Configuring The Mld Snooping Querier; Configuration Prerequisites; Enabling The Mld Snooping Querier - HPE FlexNetwork 5510 HI Series Configuration Manual

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 IPv6 multicast data
that it does not expect.
• The port forwards the MLD general queries or IPv6 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 router 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
Enter system view.
1.
Enter Layer 2 Ethernet
2.
interface view or Layer 2
aggregate interface view.
Disable the port from
3.
becoming a dynamic router
port.

Configuring the MLD snooping querier

This section describes how to configure the MLD snooping querier.

Configuration prerequisites

Before you configure the MLD snooping querier, complete the following tasks:
• Enable MLD snooping for the VLAN.
• Determine the MLD general query interval.
• Determine the maximum response time for MLD general queries.

Enabling the MLD snooping querier

This feature enables the device to periodically send MLD general queries to establish and maintain
multicast forwarding entries at the data link Layer. You can configure an MLD snooping querier on a
network without Layer 3 multicast devices.
Configuration restrictions and guidelines
Do not enable the MLD snooping querier on an IPv6 multicast network that runs MLD. An MLD
snooping querier does not participate in MLD querier elections. However, it might affect MLD querier
elections if it sends MLD general queries with a low source IPv6 address.
Command
system-view
interface interface-type
interface-number
mld-snooping router-port-deny
[ vlan vlan-list ]
202
Remarks
N/A
N/A
By default, a port is allowed to
become a dynamic router port.
This configuration does not affect
the static router port configuration.