From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Sep 05 2003 - 11:26:22 GMT-3
The sparse-dense mode, as I understand it, is so that all the multicast
routers find out who the RP's are automatically via either Auto-RP or BSR.
If the routers are only sparse mode, then you have to manually configure the
address(es) of the RP's on each router.
For further info, see either Beau Williamson book, Developing IP Multicast
Networks, Chapter 12 or Dolye's Routing TCP/IP volume II.
HTH, dt
----- Original Message -----
From: "Roger McNeace" <rmcneace@terremark.com>
To: <ccielab@groupstudy.com>
Sent: Friday, September 05, 2003 9:27 AM
Subject: PIM-Sparse vs Sparse-Dense
> As I understand it by default on Cisco routers PIM-Sparse mode will
> automatically switchover to a SPT (dense mode) to a source since the
> threshold is set to 0. Why and when would I need Sparse-Dense if Sparse
> alone does the same thing?
>
>
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