group-to-rp mappings (AutoRP Vs BSR)

[kfarrington]

All,

I have a descision to make.

Should I use Auto RP or BSR for dist of RP mappings

AutoRP Advantages

Can be used with admin scoping

AutoRP Disadvantages

Needs sparse-dense pim

BSR Advantages

Can run in sparse mode

open standard

BSR Disadvantages

Cannot be runing with admin scoping - why?

With can run with anycast and msdp I assume.

Are there any more reasons I should be looking at to influence my descision?

Many thx

[smahbub]

Auto-RP is that it offers the ability to scope the RP address within a domain. Scoping can be achieved by defining the time-to-live (TTL) value allowed for the Auto-RP advertisements.

Hi,

BSR performs similarly to Auto-RP in that it uses candidate routers for the RP function and for relaying the RP information for a group. RP information is distributed through BSR messages, which are carried within PIM messages. PIM messages are link-local multicast messages that travel from PIM router to PIM router. Because of this single hop method of disseminating RP information, TTL scoping cannot be used with BSR.

And regarding whether to use AutoRP or BSR , cisco recommends using Auto-RP to configure RPs because it is easy to configure, well-tested, and stable.

For more information please refer :

http://www.cisco.com/en/US/tech/tk648/tk363/technologies_white_paper09186a0080

[kfarrington]

Many thx indeed :))