DVMRP protocol operation begins with all configuration parameters defaulting
to values that are reasonable for most links within a site.
DVMRP Interfaces field:
Specifies if DVMRP is running on the interface.
Range: on/off
Default: off
Apply button: Applies
the parameters on the current page to the running system.
Threshold field: The
minimum IP time to live (TTL) required for a multicast datagram to be forwarded.
It is used administratively to control the scope of multicast datagrams.
Note that the TTL of forwarded packets is only compared to the threshold,
it is not decremented by the threshold. Every multicast router decrements
the TTL by 1. The packet is forwarded only if the TTL of the packet is
greater than the threshold set for the outbound port.
Options: When connecting
to the Internet Multicast Backbone (MBONE), the following values are recommended:
|
TTL |
Interface Type
|
1 |
Link within a site
|
32 |
Site boundary
|
64 |
Regional boundary
|
128 |
Continental boundary
|
Default: 1
Rate Limit (kb/sec) field:
a bandwidth limit for all multicast traffic forwarded along the interface
link. The rate limit value is specified in units of kilobits per second.
Note: this feature is not supported in the current release.
Default: 0, which represents
the special case of no rate limit.
Metric field: The cost
associated with sending a datagram on the interface. It may be used to
influence the choice of routes. A less expensive interface (smaller metric)
will be preferred to a more expensive interface (larger metric). Note that
metrics should be kept as small as possible.
Range: 1-31
Default: 1