Dell S3048-ON Configuration Manual page 526

Scenario
If there is no response for mtrace even after
switching to expanded hop search, the
command displays an error message.
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.
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
526 Multicast Features
Output
-3 2.2.2.1
99.99.0.0/16
-4 * * * *
--------------------------------------------------------------
----
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 (?)
* * * * switching to hop-by-hop:
--------------------------------------------------------------
---
|Hop| OIF IP
Mask|
--------------------------------------------------------------
---
0 1.1.1.1
-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.
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
Mask|
--------------------------------------------------------------
---
0 1.1.1.1
-1 1.1.1.1
99.99.0.0/16
-2 101.101.101.102
99.99.0.0/16
-3 2.2.2.1
99.99.0.0/16
.
.
.
-146 17.17.17.17
--------------------------------------------------------------
----
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 (?)
PIM -
|Proto| Forwarding Code |Source Network/
--> Destination
|Proto| Forwarding Code |Source Network/
--> Destination
PIM -
PIM -
PIM -
PIM No space in packet 99.99.0.0/16