mtrace <host>
Displays the route that packets take from a multicast source.
Output shows routes from the source host to the host on which the command is entered.
- host
- The host that is the source for the trace. The host is either a name (if DNS is being used on the network) or an IPv4 or IPv6 unicast address.
- addr
- The host that is the destination for the trace. The host is either an IPv4 or IPv6 unicast address.
- group
- The multicast group to trace. The format is an IPv4 or IPv6 multicast address.
- detail
- Displays detailed output. This output includes IP multicast packet-rate and packet-loss information.
Operational mode
Use this command to show the path from a source to a receiver in a multicast network.
The following example displays a trace from 10.14.0.1 through 10.12.0.2 using group 226.0.0.1.
vyatta@vyatta:~$ mtrace 10.14.0.1 destination 10.12.0.2 group 226.0.0.1
Mtrace from 10.14.0.1 to 10.12.0.2 via group 226.0.0.1
Querying full reverse path...
0 ? (10.12.0.2)
-1 ? (10.12.0.2) PIM thresh^ 1 RPF interface
-2 ? (10.12.0.1) PIM thresh^ 1
-3 ? (10.14.0.1)
Round trip time 1 msThe following example displays a detailed trace from 10.14.0.1 through 10.12.0.2 using group 226.0.0.1.
vyatta@vyatta:~$ mtrace 10.14.0.1 destination 10.12.0.2 group 226.0.0.1 detail
Mtrace from 10.14.0.1 to 10.12.0.2 via group 226.0.0.1
Round trip time 0 ms
Waiting to accumulate statistics... Results after 10 seconds:
Source Response Dest Packet Statistics For Only For Traffic
10.14.0.1 10.12.0.2 All Multicast Traffic From 10.14.0.1
v __/ rtt 0 ms Lost/Sent = Pct Rate To 226.0.0.1
10.14.0.1
10.12.0.1
v ^ ttl 1 0 0 pps 0 0 pps
10.12.0.2 RPF interface
v \__ ttl 2
10.12.0.2 10.12.0.2
Receiver Query Source