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Using the mtrace monitor Command

To monitor and display multicast trace operations, enter the mtrace monitor command:

user@host> mtrace monitor

Mtrace query at Apr 21 16:00:54 by 192.1.30.2, resp to 224.0.1.32, qid 2a83aa packet from 192.1.30.2 to 224.0.0.2 from 192.1.30.2 to 192.1.4.1 via group 224.1.1.1 (mxhop=60)  Mtrace query at Apr 21 16:00:57 by 192.1.30.2, resp to 224.0.1.32, qid 25dc17 packet from 192.1.30.2 to 224.0.0.2 from 192.1.30.2 to 192.1.4.1 via group 224.1.1.1 (mxhop=60)  Mtrace query at Apr 21 16:01:00 by 192.1.30.2, resp to same, qid 20e046 packet from 192.1.30.2 to 224.0.0.2 from 192.1.30.2 to 192.1.4.1 via group 224.1.1.1 (mxhop=60)  Mtrace query at Apr 21 16:01:10 by 192.1.30.2, resp to same, qid 1d25ad packet from 192.1.30.2 to 224.0.0.2 from 192.1.30.2 to 192.1.4.1 via group 224.1.1.1 (mxhop=60)

This example displays only mtrace queries. When the device captures an mtrace response, the display is similar, but the complete mtrace response is also displayed—exactly as it is displayed in mtrace from-source command output.

Table 211 summarizes the output fields of the display.

Table 211: CLI mtrace monitor Command Output Summary

Field	Description
Mtrace operation-type at time-of-day	operation-type—Type of multicast trace operation: query or response. time-of-day—Date and time the multicast trace query or response was captured.
by	IP address of the host issuing the query.
resp to address	address—Response destination address.
qid qid	qid—Query ID number.
packet from source to destination	source—IP address of the source of the query or response. destination—IP address of the destination of the query or response.
from source to destination	source—IP address of the multicast source. destination—IP address of the multicast destination.
via group address	address—Group address being traced.
mxhop=number	number—Maximum hop setting.

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