
Configuring IP Multicasting and Multimedia Services
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Setting the Update Interval
Periodically, each multicasting router issues full or partial routing information on
each DVMRP interface, using DVMRP report messages. This routing information
represents the sending router’s cost to reach the specified network. (The cost is the
sum of the hop metrics along the shortest path to the given source network.)
You can use the BCC or Site Manager to:
• Specify how often routing messages containing complete routing tables are
sent.
• Specify the minimum amount of time between triggered updates. Triggered
updates are sent when routing information changes. Issuing a full update
restarts the triggered update timer. Therefore, the triggered update interval
must be shorter than the full update interval.
Using the BCC
Specifying the Full Update Interval
To specify the full-update interval, navigate to the global DVMRP prompt (for
example,
stack; ip; dvmrp
) and enter:
full-update-interval
<seconds>
seconds
is an integer representing the number of seconds in the interval. The
default value is 60.
For example, the following command specifies a full-update interval of 120
seconds:
dvmrp#
full-update-interval 120
dvmrp#
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