From: Scott Morris (swm@emanon.com)
Date: Sat Nov 13 2004 - 12:07:43 GMT-3
Heheehh... It's not exactly a black and white issue. :)
Sparse-mode in general simply implies that you will be using an RP. The
Cisco docs typically use "sparse-dense" to cover all aspects.
Your lab may very well say to ALWAYS use an RP. That implies, don't use
dense.
If that's the case, you have two options based on whatever else is worded.
If you are to dynamically learn about the RP, then you have Cisco Auto-RP
(which uses dense mode). So watch for the quandry here. If you're in
sparse-only, then you'll be using the autorp listener command to make this
work.
If there is no indication about that, ask the proctor. If your lab mentions
anything about an industry standard method or about local-link multicasts,
then BSR is your solution.
Break down what things each of the solutions entails and see whether the lab
requires, prohibits, or allows any of them.
There isn't always going to be a "Use BSR" guideline! (grin) That would be
too easy!
HTH,
Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service Provider)
#4713, JNCIP, CCNA-WAN Switching, CCSP, Cable Communications Specialist, IP
Telephony Support Specialist, IP Telephony Design Specialist, CISSP
CCSI #21903
swm@emanon.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Joe
Rothstein
Sent: Saturday, November 13, 2004 8:30 AM
To: Group study
Subject: Multicast: sparse-mode vs. BSR
Just trying to figure out when to configure sparse-mode, and when to
configure BSR. To me it's not very obvious.
Maybe Scott or the Brians can give an example of the wording of a task that
would lead to one or the other.
Thanks in advance,
Joe
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