Configuring Igmp Query And Response Parameters - H3C S5500-EI Configuration Manual

An IGMP message is processed differently depending on whether it carries the Router-Alert option in the
IP header:
• By default, for the consideration of compatibility, the switch does not verify the Router-Alert option
but processes all the IGMP messages that it received. In this case, IGMP messages are directly
passed to the upper-layer protocol, whether or not the IGMP messages carry the Router-Alert option.
To enhance the switch performance and avoid unnecessary costs, and also for the consideration of
•
protocol security, you can configure the switch to discard IGMP messages that do not carry the
Router-Alert option.
Configuring Router-Alert option handling methods globally
Step
1. Enter system view.
2. Enter public network IGMP
view or VPN instance IGMP
view.
3. Configure the router to
discard any IGMP message
that does not carry the
Router-Alert option.
4. Enable insertion of the
Router-Alert option into IGMP
messages.
Configuring Router-Alert option handling methods on an interface
Step
1. Enter system view.
2. Enter interface view.
3. Configure the interface to
discard any IGMP message
that does not carry the
Router-Alert option.
4. Enable insertion of the
Router-Alert option into IGMP
messages.

Configuring IGMP query and response parameters

On startup, the IGMP querier sends IGMP general queries at the startup query interval, which is
one-quarter of the IGMP general query interval. The number of queries, or the startup query count, is user
configurable.
Command
system-view
igmp [ vpn-instance
vpn-instance-name ]
require-router-alert
send-router-alert
Command
system-view
interface interface-type
interface-number
igmp require-router-alert
igmp send-router-alert
113
Remarks
N/A
N/A
By default, the switch does not
check the Router-Alert option.
By default, IGMP messages carry
the Router-Alert option.
Remarks
N/A
N/A
By default, the switch does not
check the Router-Alert option.
By default, IGMP messages carry
the Router-Alert option.