
Configuring and Customizing IGMP
117355-C Rev 00
3-19
Specifying a Designated Router Timeout Interval
By default, 140 seconds can elapse after the last host query message before IGMP
considers the designated router to be down.
You can use the BCC or Site Manager to specify a timeout interval from 10 to
8192 seconds. The value you specify should be greater than the query rate of all
IGMP routers on the network. The suggested value is (2 * Query Rate) + 20.
Using the BCC
Navigate to the IGMP prompt for the interface and enter:
dr-timeout
<seconds>
seconds
is an interval from 10 to 8192 seconds.
For example, the following command sets the timeout interval to 200 seconds:
igmp/2.2.2.2/3#
dr-timeout 200
igmp/2.2.2.2/3#
Using Site Manager
To specify a designated router timeout interval:
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
IP
. The IP menu opens.
3. Choose
IGMP/IGMP Relay
. The IGMP menu opens.
4. Choose
Interfaces
. The IGMP Interface Parameters window
opens.
5. Set the
Designated Router Timeout
parameter. Click on
Help
or see the
parameter description on page A-23.
6. Click on
Apply
, and then click on
Done
. You return to the Configuration Manager
window.
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