mtrace
Syntax
mtrace source
<routing-instance routing-instance-name>
Release Information
Command introduced before Junos OS Release 7.4.
Command introduced in Junos OS Release 9.0 for EX Series switches.
Description
Display trace information about an IP multicast path.
Options
source
—Source hostname or address.
routing-instance
routing-instance-name
—(Optional) Trace a particular routing instance.
Additional Information
The
mtrace
command for multicast traffic is similar to the
traceroute
command used
for unicast traffic. Unlike
traceroute
,
mtrace
traces traffic backwards, from the receiver
to the source.
Required Privilege
Level
view
List of Sample Output
mtrace source on page 2439
Output Fields
Table 303 on page 2438 describes the output fields for the
mtrace
command. Output fields
are listed in the approximate order in which they appear.
Table 303: mtrace Output Fields
Field Description
Field Name
IP address of the receiver.
Mtrace from
IP address of the source.
to
IP address of the multicast group (if any).
via group
Indicates the full reverse path query has begun.
Querying full reverse path
Number of hops from the source to the named router or switch.
number-of-hops
Name of the router or switch for this hop.
router-name
Address of the router or switch for this hop.
address
Protocol used (for example, PIM).
protocol
Average round-trip time, in milliseconds (ms).
Round trip time
Time-to-live (TTL) threshold.
total ttl of
Copyright © 2010, Juniper Networks, Inc.
2438
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...