From: Rado Vasilev (decklandv@gmail.com)
Date: Fri Jul 18 2008 - 13:23:53 ART
Another usage of Anycast RP could be to provide redundancy within a
single multicast domain, where you have two or more routers configured
with the same IP address and accepting PIM messages from the rest of the
routers.
This also provides load-sharing as all of the configured anycast RP will
be active. Therefore multicast sources (or rather their DRs) could
register with different RP router, while multicast receivers and their
shared trees could be rooted at different RP router. This necessitates
the need of synchronizing all anycast RPs with MSDP. All of that within
a single domain.
Rado
> By no means am I an expert, but Anycast is for RP's in different
> multicast domains to share SG information. To me that means they have
> to be RPs to communicate. Thats my .02
> ----- Original Message ----- From: "GAURAV MADAN"
> <gauravmadan1177@gmail.com>
> To: "Cisco certification" <ccielab@groupstudy.com>
> Sent: Friday, July 18, 2008 8:29 AM
> Subject: AnyCast RP
>
>
>> SW2--------R5---------
>> |
>> |
>> R4-------
>> |
>> |
>> R6
>>
>> Hi All
>>
>> I am working on Anycast config . I straight forward referred the DocCD
>> as i think that this is very well explained using exmple there .
>>
>> R4
>> ip msdp peer 150.1.5.5 connect-source Loopback0
>> ip msdp originator-id Loopback0
>> !
>> R5
>> ip msdp peer 150.1.4.4 connect-source Loopback0
>> ip msdp originator-id Loopback0
>> !
>>
>> On R6 as well as SW2 ; I had defined " ip pim rp-address <common
>> loopback of R4 amd R5> "
>>
>> All the configs was fine .. But I was getting error message on R4 as
>> well as R5 :
>>
>> *Jul 18 14:12:39.829: %PIM-6-INVALID_RP_JOIN: Received (*, 224.0.1.40)
>> Join from 129.1.58.8 for invalid RP 150.1.0.255
>> etc
>>
>> Now ; when I specify the static RP on R4 as well as R5 also .. this
>> message disappeared and I got everything working.
>>
>> Since this is not mentioned in DocCD to define the static RP on
>> routers where I have done the msdp configs also ; I wanted someone to
>> clearify that is that the only solution or am i missing something
>>
>> Thnx
>> Gaurav Madan.
>>
>>
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>
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