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Re: So we need some scoping for non-global I2 multicast groups


Chronological Thread 
  • From: Bill Fenner <>
  • To:
  • Cc: , ,
  • Subject: Re: So we need some scoping for non-global I2 multicast groups
  • Date: Wed, 7 Jul 1999 11:57:24 -0700
  • Versions: dmail (solaris) 2.2c/makemail 2.8t


>> a) MSDP could be configured for a minimum TTL required before
>> sending an SA
>
>It can, at least in Cisco's implementation. "ip msdp
>ttl-threshold <neighbor> <threshold>".

I'm fairly sure this only controls what packets are allowed to be
forwarded inside SA encapsulation, not whether or not SA messages are
sent at all.

You're right that discovery protocols mesh poorly with sparse mode
(particularly if they try to do expanding-ring searches). You effectively
need to have a PIM domain per smallest administrative area.

Bill




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