System information

Configuring IP Multicast Routing
8-15
n is the amount of delay from 1 to 10 seconds.
reports is the number of route reports from 1 to 100.
Setting the DVMRP Probe Interval
The DVMRP probe interval is configured to send queries to neighboring multicast
routers for DVMRP multicast routes. Use the ip dvmrp probe-interval command in
Interface Configuration mode to set the DVMRP probe interval, as shown below:
MOT(config-if)#ip dvmrp probe-interval <n>
where:
n is the probe interval from 5 to 3600 seconds.
Rejecting a DVMRP Non-pruning Neighbor
The BSR accepts all DVMRP neighbors as peers by default. Routers that have old
versions of DVMRP, that cannot prune, waste bandwidth by receiving forwarded
packets unnecessarily.
If there is a non-pruning version of DVMRP running on a neighbor, use the ip dvmrp
reject-non-pruners command in Interface Configuration mode to prevent this
neighbor from receiving forwarded packets, as shown below:
MOT(config-if)#ip dvmrp reject-non-pruners
Configuring a DVMRP Summary Address
Use the ip dvmrp summary-address command in Interface Configuration mode to
create a summary address for a group of DVMRP routes, as shown below.
Note: The ip dvmrp reject-non-pruners command prevents peering with
neighbors only. If there are any non-pruning routers multiple hops away
(downstream toward potential receivers) that are not rejected, then a
non-pruning DVMRP network may still exist.