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MRINFO(8) System Manager's Manual MRINFO(8) NAME mrinfo -- displays configuration info from a multicast router SYNOPSIS mrinfo [-hn] [-d level] [-r count] [-t seconds] router DESCRIPTION mrinfo attempts to display the configuration information from the spec- ified multicast capable router. mrinfo uses the ASK_NEIGHBORS IGMP message to query the specified mul- ticast router. If the router responds, the version number and a list of their neighboring multicast router addresses is part of the re- sponse. If the responding router has a recent multicast version num- ber, then mrinfo requests additional information such as metrics, thresholds, and flags from the multicast router. Once the specified multicast router responds, the configuration is displayed to the stan- dard output. The options are as follows: -h Print a help message and exit. -n Use numerical address instead of a symbolic host name. -d level sets the debug level. When the debug level is greater than the default value of 0, additional de- bugging messages are printed. Regardless of the de- bug level, an error condition will always write an error message and cause mrinfo to terminate. Non- zero debug levels have the following effects (printed to stderr): 1 packet warnings. 2 all level 1 messages plus notifications of down networks. 3 all level 2 messages plus notifications of all packet timeouts. -r count sets the neighbor query retry count limit. The de- fault is to do 3 retries. -t seconds sets the timeout in number of seconds to wait for a neighbor query reply. The default timeout is 4 sec- onds. EXAMPLES # mrinfo mbone.phony.dom.net 127.148.176.10 (mbone.phony.dom.net) [version 3.3]: 127.148.176.10 -> 0.0.0.0 (?) [1/1/querier] 127.148.176.10 -> 127.0.8.4 (mbone2.phony.dom.net) [1/45/tunnel] 127.148.176.10 -> 105.1.41.9 (momoney.com) [1/32/tunnel/down] 127.148.176.10 -> 143.192.152.119 (mbone.dipu.edu) [1/32/tunnel] For each neighbor of the queried multicast router, the IP of the queried router is displayed, followed by the IP and name of the neigh- bor. In square brackets the metric (cost of connection) and threshold (multicast ttl) is displayed. If the queried multicast router has a newer version number, the type (tunnel, srcrt) and status (disabled, down) of the connection is displayed. SEE ALSO map-mbone(8), mrouted(8), mtrace(8) AUTHORS Van Jacobson FreeBSD 14.3 May 31, 2007 MRINFO(8)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | AUTHORS
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