Multicast Traceroute - Dell Force10 S4810P Configuration Manual

Multicast Traceroute

Multicast Traceroute
MTRACE is an IGMP-based tool that prints that network path that a multicast packet takes from a source
to a destination, for a particular group. FTOS has mtrace client and mtrace transmit functionality.
• MTRACE Client—an mtrace client transmits mtrace queries and prints out the details received
responses.
• MTRACE Transit—when a Dell Force10 system is an intermediate router between the source and
destination in an MTRACE query, FTOS computes the RPF neighbor for the source, fills in the
request, and forwards the request to the RPF neighbor. While computing the RPF neighbor, static
mroutes and mBGP routes are preferred over unicast routes. When a Dell Force10 system is the last
hop to the destination, FTOS sends a response to the query.
Task
Print the network path that a multicast
packet takes from a multicast source to
receiver, for a particular group.
Figure 33-4. Tracing a Multicast Route
FTOS#mtrace 10.11.5.2 10.11.3.2 239.0.0.1
Type Ctrl-C to abort.
Mtrace from 10.11.5.2 to 10.11.3.2 via group 239.0.0.1
From source (?) to destination (?)
Querying full reverse path...
0 10.11.3.2
-1 10.11.3.1
-2 10.11.5.2
is supported only on platform:
Command Syntax
mtrace multicast-source-address
multicast-receiver-address multicast-group-address
PIM Reached RP/Core [default]
e
Command Mode
EXEC Privilege
Multicast Features | 719