On Thu, Sep 29, 2005 at 06:25:06AM +0930, Mark Smith wrote: > On Wed, 28 Sep 2005 14:34:37 +0200 > Stig Venaas <[EMAIL PROTECTED]> wrote: [...] > > Great! What I forgot to mention, is that if you do BSR, then scoped BSR > > is also good, as well as being able to drop BSMs that exceed the scope > > at a scope boundary. > > > > Hopeing to learn something new everyday, what are BSR and BSM ?
BSR (Bootstrap Router) is a protocol that can be used by PIM routers to learn which RPs (Rendezvous Points) to use. Many PIM-SM implementations use BSR by default. This means that you only need to configure your RPs (or candidate RPs) and 1 (or a few candidate BSR routers). One router is elected as the BSR. Candidate RPs will send advertisements to the BSR. The BSR will based on the advertisements send out Bootstrap messages (BSMs) that tells all the routers what RPs to use. BSR allows the RP configuration to change dynamically when routers or links go up and down. BSR has been around for a long time, see RFC 2362 section 3.6 for further details. Scoped BSR is still being worked on, latest is draft-ietf-pim-sm-bsr-05.txt which unfortunately expired last month, but I'm sure you can find it if you're interested. Stig --------------------------------------------------------------------- The IPv6 Users Mailing List Unsubscribe by sending "unsubscribe users" to [EMAIL PROTECTED]
