Reference Guide

Multicast Features | 455
Multicast Traceroute
Multicast Traceroute is supported only on platform: e
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 Networking 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 Networking system is the
last hop to the destination, FTOS sends a response to the query.
Figure 23-4. Tracing a Multicast Route
Multicast Quality of Service
Multicast Quality of Service is supported only on platform: e
The Quality of Service (QoS) features available for unicast traffic can be applied to multicast flows. The
following QoS features are available:
• Policy-based QoS—Classifying, rate policing, and marking ingress traffic
• WRED
• See also Allocate More Buffer Memory for Multicast WRED.
Task Command Syntax Command Mode
Print the network path that a multicast
packet takes from a multicast source to
receiver, for a particular group.
mtrace multicast-source-address
multicast-receiver-address multicast-group-address
EXEC Privilege
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 PIM Reached RP/Core [default]
-2 10.11.5.2