Disabling A Port From Becoming A Dynamic Router Port - HP FlexNetwork 7500 Series Configuration Manual

Disabling a port from becoming a dynamic router port

A receiver host might send an MLD general query or IPv6 PIM hello message for testing purposes. In
this case, the following problems might exist:
•
The router port that receives the MLD general query or IPv6 PIM hello message becomes a
dynamic router port. Before its aging timer expires, this dynamic router port receives all
multicast packets within the VLAN that the port belongs to and forwards them to the host
attached to the port. In this case, the receiver host will receive IPv6 multicast data that it does
not expect.
•
In addition, the MLD general query and IPv6 PIM hello message that the host sends affect the
multicast routing protocol state on Layer 3 devices, such as the MLD querier or DR election.
This might further cause network interruption.
To solve these problems and to improve network security and the control over multicast users, you
can disable the router port from becoming a dynamic router port.
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 MLD general query interval.
•
Determine the maximum response time for MLD general queries.
Enabling the MLD snooping querier
This feature enables the switch 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.
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.
To enable the MLD snooping querier for a VLAN:
Command
system-view
interface interface-type
interface-number
mld-snooping router-port-deny
[ vlan vlan-list ]
237
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.