
Customizing DVMRP
117355-D Rev 00
4-57
Specifying a Threshold
By default, DVMRP assigns a threshold value of 1 to a tunnel. This value is the
minimum IP TTL required for a multicast datagram to be forwarded out this
tunnel. You can use the BCC or Site Manager to assign a value from 1 through
254.
Use this value to control the scope of the datagrams. If the IP TTL is less than the
threshold value you specify, the router drops the datagram.
Using the BCC
To specify a threshold value, navigate to a DVMRP tunnel prompt (for example,
box; tunnels; dvmrp/2.2.2.2/2.2.4.5)
and enter:
threshold
<ttl>
ttl
is an integer from 1 (the default) through 254.
For example, the following command assigns a threshold TTL value of 15 to
DVMRP tunnel 2.3.4.5/4.4.2.3:
dvmrp/2.3.4.5/4.4.2.3#
threshold 15
dvmrp/2.3.4.5/4.4.2.3#
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