From: ben edgar (bedgar2500@gmail.com)
Date: Sun Jan 25 2009 - 21:12:34 ARST
if auto-rp or bsr's rp fails and it cannot find another rp
then it will fall back to dense mode.
one option is to statically assign an rp as a back up
or use the no ip pim dm-fallback
On Sun, Jan 25, 2009 at 4:13 PM, Roger RPF <rpf@bluemail.ch> wrote:
> Jason, I fully agree and I get the same error but, have a look at the doccd
> on the following link, step 14 in the configuration:
>
> http://www.cisco.com/en/US/docs/ios/ipmulti/configuration/guide/imc_basic_cf
> g_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1059019
>
> regards
>
> Roger
>
> -----Urspr|ngliche Nachricht-----
> Von: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Im Auftrag von
> Jason Morris
> Gesendet: Sonntag, 25. Januar 2009 21:45
> An: Wouter Prins
> Cc: Cisco certification
> Betreff: Re: no ip pim dm-fallback in sparse mode domain?
>
> I was under the impression 'no ip pim dm-fallback' was to keep sparse-dense
> mode from falling back. you cant configure dm-fallback on a router that is
> just running sparce mode.
>
> R1(config)#ip pim dm-fallback
> Can not have fallback mode as dense, all interfaces are in pim sparse mode
>
>
>
> On Sun, Jan 25, 2009 at 2:35 PM, Wouter Prins <wp@null0.nl> wrote:
>
>> Roger,
>>
>> Good point. :)
>> I think when you are using ip pim autorp listener that forwards
> (224.0.1.39
>> and 224.0.1.40 dense-like) , you dont need ip pim dm-fallback anymore.
>>
>> 2009/1/25 Roger RPF <rpf@bluemail.ch>
>>
>> > Hi Group,
>> >
>> > While reading the DocCD I was surprised reading on the following link
>> step
>> > 14:
>> >
>> >
>> >
>>
> http://www.cisco.com/en/US/docs/ios/ipmulti/configuration/guide/imc_basic_cf
>> > g_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1059016<
>>
> http://www.cisco.com/en/US/docs/ios/ipmulti/configuration/guide/imc_basic_cf
> %0Ag_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1059016
>> >
>> >
>> > that we should configure no ip pim dm-fallback on all routers in a
> sparse
>> > mode domain.
>> >
>> > Well, my understanding is, that if I'm running sparse-mode only my
> router
>> > does not fall back to dm for flooding?
>> >
>> > Do I understand something wrong?
>> >
>> > regards
>> >
>> > Roger
>> >
>> >
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