Configuring Source Ip Addresses For Igmp Messages - HP FlexFabric 5950 series Configuration Manual

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Determine the 802.1p priority of IGMP messages.

Configuring source IP addresses for IGMP messages

The IGMP snooping querier might send IGMP general queries with the source IP address 0.0.0.0.
The port that receives such queries will not be maintained as a dynamic router port. This might
prevent the associated dynamic IGMP snooping forwarding entry from being correctly created at the
data link layer and eventually cause multicast traffic forwarding failures.
To avoid this problem, you can configure a non-all-zero IP address as the source IP address of the
IGMP queries on the IGMP snooping querier. This configuration might affect the IGMP querier
election within the subnet.
You can also change the source IP address of IGMP reports or leave messages sent by a simulated
member host or an IGMP snooping proxy.
Configuring the source IP address for IGMP messages in a VLAN
Step
1. Enter system view.
2. Enter VLAN view.
3. Configure the source IP
address for IGMP general
queries.
4. Configure the source IP
address for IGMP
group-specific queries.
5. Configure the source IP
address for IGMP reports.
6. Configure the source IP
address for IGMP leave
messages.
Command
system-view
vlan vlan-id
igmp-snooping
general-query
source-ip ip-address
igmp-snooping
special-query
source-ip ip-address
igmp-snooping report
source-ip ip-address
igmp-snooping leave
source-ip ip-address
28
Remarks
N/A
N/A
By default, the source IP address of
IGMP general queries is the IP
address of the current VLAN interface.
If the current VLAN interface does not
have an IP address, the source IP
address is 0.0.0.0.
By default, the source IP address of
IGMP group-specific queries is one of
the following:
•
The source address of IGMP
group-specific queries if the
IGMP snooping querier of the
VLAN has received IGMP
general queries.
•
The IP address of the current
VLAN interface if the IGMP
snooping querier does not
receive an IGMP general query.
•
0.0.0.0 if the IGMP snooping
querier does not receive an
IGMP general query and the
current VLAN interface does not
have an IP address.
By default, the source IP address of
IGMP reports is the IP address of the
current VLAN interface. If the current
VLAN interface does not have an IP
address, the source IP address is
0.0.0.0.
By default, the source IP address of
IGMP leave messages is the IP
address of the current VLAN interface.
If the current VLAN interface does not
have an IP address, the source IP
address is 0.0.0.0.