Mcast RP redundancy Question

Group,

One of the tasks I have is to have multiple RPs for the different set of
Mcast groups but still provide redundancy.

R1 services groups: 224.x.x.x to 231.x.x.x (Set-1)
R2 services groups: 232.x.x.x to 239.x.x.x (Set-2)

*Task*: R1 and R2 should be the RPs for their respective groups, but each
should serve as a backup for other.

*Question is* - which protocol should I use to provide redundancy ? BSR,
Auto-RP or Anycast RP ?

*1) In Auto-RP: *
Let R1 and R2 announce themselves as RPs for entire 224.0.0.0/8, but have
the MA select R1 for first set and R2 for second set.
If either R1 or R2 is dead, the MA will select the other as the RP for all
groups.

*2) BSR: *
Let R1 announce itself as cRP for Set-1 with priority = 100 and for Set-2
with priority = 200
Let R2 announce itself as cRP for Set-1 with priority = 200 and for Set-2
with priority = 100
When the BSR announces the Group-to-RP-Set, individual routers will select
one of them.
If either R1 or R2 fails, all routers will use the other.

*3) Anycast RP*
Hide both R1 and R2 behind the same IP address and advertise this IP address
as RP using Auto-RP or BSR.

Thanks,
Naveen.

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Received on Tue Apr 14 2009 - 00:03:07 ART