From: Howard C. Berkowitz (hcb@gettcomm.com)
Date: Sat Sep 11 2004 - 17:52:32 GMT-3
At 1:40 PM -0700 9/11/04, Bryan Osoro wrote:
>I'm trying to do it without SNMP. Any ideas there?
Warning: I know that the suggestion I am about to make is inelegant
and generally insane. Given that caveat, try to find the equivalent
command for IGMPv6, and see if it gives any better control. If it
does, then try substituting V4 for V6 in the command. It's not
unheard of to find that Cisco developers may derive a new
functionality from an old command, build new functionality into the
new one, but change the code so that the new function becomes an
undocumented capability of the old.
Not being in front of a router, is the 60 second minimum from the
documentation or the ? function in context-sensitive help? I've
found many cases where the documentation was more restrictive than
the CLI.
Have you tried this for all versions of IGMP? The timers may be
different with IGMP version.
These are all weird ideas, but I've seen examples of every one of
them work with real code.
>
>I'll dig through mib controls in parallel.
>
>
>
>thanks
>
>B
>--- "Howard C. Berkowitz" <hcb@gettcomm.com> wrote:
>
>> At 1:33 PM -0700 9/11/04, Bryan Osoro wrote:
>> >I'm trying modify IOS IGMP default behavior.
>> >
>> >Any idea how to tweak IGMP like this?
>> >
>> >Two routers on a LAN segment should query for
>> >membership ever 10 seconds. Additionally, if one of
>> >the routers goes down, the other should take over
>> >within 16 seconds.
>> >
>> >The ip igmp querier-timeout should allow you to do
>> >this, but the minimum value you can actually
>> configure
>> >is 60 seconds.
>> >
>> >If you manipulate the ip igmp query-interval, the
>> >querier-timeout is automatically double. So, if I
>> >change that to 8, the querier timeout becomes 16.
>> >However, this means that the router is querying the
>> >LAN every 8 seconds, and not 10. Anyway to change
>> >this behavior?
>> >
>>
>> Have you checked whether there is a MIB variable
>> available that will
>> give you different control than the configuration
>> command?
>>
>>
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