Configuring The Source Ip Addresses For Igmp Queries; Configuring Igmp Snooping Proxying; Enabling Igmp Snooping Proxying - HP 6125G Configuration Manual

Step
4. Set the maximum response
delay for IGMP general
queries.
5. Set the IGMP last-member
query interval.

Configuring the source IP addresses for IGMP queries

After the switch receives an IGMP query whose source IP address is 0.0.0.0 on a port, it does not enlist
that port as a dynamic router port. This might prevent multicast forwarding entries from being correctly
created at the data link layer and eventually cause multicast traffic forwarding to fail. To avoid this
problem, when a Layer 2 switch acts as the IGMP snooping querier, HP recommends you to configure a
non-all-zero IP address as the source IP address of IGMP queries.
IMPORTANT:
The source address of IGMP query messages might affect the IGMP querier election within the segment
To configure the source IP addresses for IGMP queries:
Step
1. Enter system view.
2. Enter VLAN view.
3. Configure the source address
of IGMP general queries.
4. Configure the source IP
address of IGMP
group-specific queries.

Configuring IGMP snooping proxying

Before you configure IGMP snooping proxying in a VLAN, complete the following tasks:
Enable IGMP snooping in the VLAN.
•
Determine the source IP address for the IGMP reports sent by the proxy.
•
• Determine the source IP address for the IGMP leave messages sent by the proxy.

Enabling IGMP snooping proxying

The IGMP snooping proxying function works on a per-VLAN basis. After you enable the function in a
VLAN, the device works as the IGMP snooping proxy for the downstream hosts and upstream router in
the VLAN.
To enable IGMP snooping proxying in a VLAN:
Step
1. Enter system view.
Command
igmp-snooping max-response-time interval
igmp-snooping
last-member-query-interval interval
Command
system-view
vlan vlan-id
igmp-snooping general-query source-ip
{ ip-address | current-interface }
igmp-snooping special-query source-ip
{ ip-address | current-interface }
Command
system-view
25
Remarks
10 seconds by default
1 second by default
Remarks
N/A
N/A
0.0.0.0 by default
0.0.0.0 by default
Remarks
N/A