Administrator Guide

Table 70. Mtrace Scenarios (continued)
Scenario Output
0 1.1.1.1 --> Destination
-1 * * * *
---------------------------------------------------------
---------
Timed out receiving responses
Perhaps no local router has a route for source, the
receiver is not
a member of the multicast group or the multicast ttl is
too low.
While traversing the path from source to
destination, if the mtrace packet
exhausts the maximum buffer size of the
packet, then NO SPACE error is displayed
in the output. You can initiate a new
mtrace query by specifying the
destination as the last IP address from
the output of the previous trace query.
R1>mtrace 99.99.99.99 1.1.1.1
Type Ctrl-C to abort.
Querying reverse path for source 99.99.99.99 to
destination 1.1.1.1 via RPF
From source (?) to destination (?)
---------------------------------------------------------
--------
|Hop| OIF IP |Proto| Forwarding Code |Source
Network/Mask|
---------------------------------------------------------
--------
0 1.1.1.1 --> Destination
-1 1.1.1.1 PIM -
99.99.0.0/16
-2 101.101.101.102 PIM -
99.99.0.0/16
-3 2.2.2.1 PIM -
99.99.0.0/16
.
.
.
-146 17.17.17.17 PIM No space in packet
99.99.0.0/16
---------------------------------------------------------
---------
In a valid scenario, mtrace request
packets are expected to be received on
the OIF of the node. However, due to
incorrect formation of the multicast tree,
the packet may be received on a wrong
interface. In such a scenario, a
corresponding error message is displayed.
R1>mtrace 6.6.6.6 4.4.4.5
Type Ctrl-C to abort.
Querying reverse path for source 6.6.6.6 to destination
4.4.4.5 via RPF
From source (?) to destination (?)
---------------------------------------------------------
--------
|Hop| OIF IP |Proto| Forwarding Code |Source
Network/Mask|
---------------------------------------------------------
--------
0 4.4.4.5 --> Destination
-1 4.4.4.4 PIM
6.6.6.0/24
-2 20.20.20.2 PIM 6.6.6.0/24
-3 10.10.10.1 PIM Wrong interface
6.6.6.0/24
---------------------------------------------------------
---------
R1>mtrace 6.6.6.6 4.4.4.5
Type Ctrl-C to abort.
Multicast Features 577