Re: [pim] Replacing unicast BSMs with multicast

[John Zwiebel <jzwiebel at cisco.com>]

On Apr 26, 2006, at 2:27 PM, Leonard Giuliano wrote:

> -) My impression would be static-RP for server provider and BSR/ 
> auto-rp more for
> -) enterprises, but I haven't seen that many different ones.
>
> Why?  Do enterprises prefer more complexity, slower convergence, more
> difficulty when troubleshooting?
YMMV, depends on the enterprise and what they expect.
I don't believe a well-implemented BSR will be that much slower given
my experience (although in a rather small environment admittedly).

> My impression was that BSR was created to address the shortcomings of
> AutoRP, and then Anycast came along and everyone who deployed mcast
> since has been using that.  Seems like quite alot of work has been put
> into something for which there are much better alternatives.  Plus,  
> with
> Anycast PIM, now you don't even need MSDP.

I'm not necessarily disagreeing with you.  Right now, in most  
enterprises
a single RP address may be enough.  But if multicast becomes more
widely deployed, I can imagine the need for being able to move a bidir
RP quickly from one subnet to another.

We're pretty close to having the BSR be reliable enough to make that  
useful.
I'd rather get it done so we can move on and not have to worry about it
in the future.  2cents.

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