R3303-HP HSR6800 Routers IP Multicast Command Reference

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Default command level
1: Monitor level
Parameters
source-address: Specifies a multicast source address.
group-address: Specifies a multicast group address in the range of 224.0.1.0 to 239.255.255.255.
last-hop-router-address: Specifies a last-hop router address, which is the IP address of the local router by
default.
Usage guidelines
If the command to trace the path for a specific (S, G) multicast stream includes the last-hop-router-address
argument, the interface that corresponds to the last-hop router address must be the outgoing interface for
the (S, G) entry. Otherwise, the multicast traceroute might fail.
Examples
# Trace the path down which the (6.6.6.6, 225.2.1.1) multicast traffic flows to the last-hop router with an
IP address of 5.5.5.8.
<Sysname> mtracert 6.6.6.6 5.5.5.8 225.2.1.1
Type Ctrl+C to quit mtrace facility
Tracing reverse path of (6.6.6.6, 225.2.1.1) from last-hop router (5.5.5.8) to source
via multicast routing-table
-1 5.5.5.8
Incoming interface address: 4.4.4.8
Previous-hop router address: 4.4.4.7
Input packet count on incoming interface: 17837
Output packet count on outgoing interface: 0
Total number of packets for this source-group pair: 8000
Protocol: PIM
Forwarding TTL: 0
Forwarding code: No error
-2 4.4.4.7
Incoming interface address: 6.6.6.7
Previous-hop router address: 0.0.0.0
Input packet count on incoming interface: 2
Output packet count on outgoing interface: 259
Total number of packets for this source-group pair: 8100
Protocol: PIM
Forwarding TTL: 0
Forwarding code: No error
Table 13 Command output
Field Descri
p
tion
(6.6.6.6, 225.2.1.1) (S, G) multicast stream for which the forwarding path is being traced.