Juniper JUNOSE 11.2.X MULTICAST ROUTING Configuration Manual page 62

JunosE 11.2.x Multicast Routing Configuration Guide
40
To send the trace to a particular device, specify the IP address of that device. If you do
not specify a response address, the router sends the trace to an IP address on the
router.
To investigate a problem at a particular point in the route, specify the maximum number
of hops for the trace. The default number of hops is 64.
The trace starts at the destination and works back to the source.
Field descriptions
Tracing multicast route from a.a.a.a to b.b.b.b for group c.c.c.c using response address
d.d.d.d—A description of the trace is as follows:
a.a.a.a—IP address of the source
b.b.b.b—IP address of the destination
c.c.c.c—IP address of the multicast group
d.d.d.d—IP address of the router to which the router sends the trace
Received mtrace response packet of length n—Length of the response packet, in
bytes
Each line of the trace has the following format: hops. ip-address Protocol: protocol
FwdingCode:forwarding code
hops—Number of hops from the destination to this intermediate router
ip-address—IP address of the intermediate router
protocol—Multicast protocol running on the intermediate router. A value of 12
indicates IGMP; other values comply with A " traceroute" Facility for IP Multicast
– draft-ietf-idmr-traceroute-ipm-07.txt.
FwdingCode—Forwarding information or error associated with this hop. For
example, RPF iif indicates that the request arrived on the expected RPF interface
for this source group. For more information about the forwarding information or
error codes, see A " traceroute" Facility for IP Multicast –
draft-ietf-idmr-traceroute-ipm-07.txt.
Example
host1#mtrace 100.4.4.4 40.1.1.1 232.1.1.1
Tracing multicast route from 100.4.4.4 to 40.1.1.1 for group 232.1.1.1 using response address
10.6.129.56
(Press ^c to stop.)
Received mtrace response packet of length 88
1. 40.1.1.1 Protocol: PIM(3) FwdingCode: RPF iif(9)
2. 21.2.2.2 Protocol: PIM(3) FwdingCode: Reached RP(8)
There is no no version.
See mtrace.
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