Enabling The Mld Snooping Querier; Configuring Parameters For Mld Queries And Responses - HP FlexFabric 5700 Series Configuration Manual
Ip multicast
Hide thumbs
Also See for FlexFabric 5700 Series:
- Security configuration manual (460 pages) ,
- Configuration manual (185 pages) ,
- Configuration manual (63 pages)
Table of Contents
Determine the MLD general query interval.
•
•
Determine the MLD last listener 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.
When you enable the MLD snooping querier, follow these 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.
•
On a TRILL network, if an RB acts as both the MLD snooping querier and the AVF of a VLAN, HP
recommends that you configure the designated port as a static router port. Otherwise, MLD
snooping forwarding entries cannot be created. For more information about TRILL, RB, AVF, and
designated ports, see TRILL Configuration Guide.
To enable the MLD snooping querier for a VLAN:
Step
1.
Enter system view.
2.
Enter VLAN view.
3.
Enable the MLD snooping
querier.
Configuring parameters for MLD queries and responses
CAUTION:
Make sure the MLD general query interval is larger than the maximum response time for MLD general
queries. Otherwise, multicast group members might be deleted by mistake.
You can modify the MLD general query interval based on the actual network conditions.
A receiver host starts a timer for each IPv6 multicast group that it has joined when it receives an MLD
query (general query or multicast-address-specific query). This timer is initialized to a random value in
the range of 0 to the maximum response time advertised in the MLD query message. When the timer
value decreases to 0, the host sends an MLD report to the IPv6 multicast group.
To speed up the response of hosts to MLD queries and to avoid simultaneous timer expirations which
cause MLD report traffic bursts, you must correctly set the maximum response time.
The maximum response time for MLD general queries is set by the max-response-time command.
•
The maximum response time for MLD multicast-address-specific queries equals the MLD last listener
•
query interval, which is set by the last-listener-query-interval command.
Command
system-view
vlan vlan-id
mld-snooping querier
70
Remarks
N/A
N/A
By default, MLD snooping querier
is disabled.
Table of Contents
Troubleshooting
