Wednesday, June 10, 2009

PIM misc - dense mode reqd in sparse-dense region

Suppose the lab required one Mcast range ONLY operate in dense mode, whereas the rest of the domain should operate in sparse mode???

This can be achieved by making use of the 'deny' statement in the ACL used to denote the mcast groups serviced by the candidate RP.

SW3#s access-list 11
Standard IP access list 11
40 deny
20 permit, wildcard bits
30 permit, wildcard bits

When examining the rp mapping then the 'denied' range will be shown with a minus

Group(s) (-)
RP (?), v2v1
Info source: (?), elected via Auto-RP
Uptime: 00:01:31, expires: 00:02:27
RP (?), v2v1
Info source: (?), via Auto-RP
Uptime: 00:01:07, expires: 00:02:50

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