27
Step Command Remarks
query interval.
last-member-query-interval
interval
Configuring the source IP addresses for IGMP queries
IMPORTANT:
Changing the source address for IGMP query messages might affect the IGMP querier election
within the subnet.
After a 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, Hewlett Packard
Enterprise recommends you configure a non-all-zero IP address as the source IP address of IGMP
queries.
To configure source IP addresses of IGMP queries:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VLAN view.
vlan
vlan-id
N/A
3.
Configure the source IP
address for IGMP general
queries.
igmp-snooping general-query source-ip
{
ip-address
|
current-interface
}
0.0.0.0 by default.
4.
Configure the source IP
address for IGMP
group-specific queries.
igmp-snooping special-query source-ip
{
ip-address
|
current-interface
}
0.0.0.0 by default.
Configuring IGMP snooping proxying
This section describes how to configure IGMP snooping proxying.
Configuration prerequisites
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:
