[ns] MPLS example

[JOSE LUIS PEREZ PACHECO <jose.luis.perez3@upcnet.es>]

Hi all,
I'm working with a MPLS example, and I have a problem with the instruction:

[$LSR4 get-module MPLS] enable-control-driven

Erro message:

0.11056 3(4->3): U -1 L3 -1 -1 -1 0
0.114562308107243 3(2->3): U -1 L3 -1 -1 -1 0
0.114562308107243 3(4->3): U -1 L3 -1 -1 -1 0
0.114562308107243 3(3->2): U -1 Push(penultimate) 2 0 32 0
0.114562308107243 3(3->4): U -1 Push(penultimate) 4 0 32 0
0.134770308107243 3(2->3): U -1 L3 -1 -1 -1 0
0.134770308107243 3(4->3): U -1 L3 -1 -1 -1 0
0.134770308107243 3(3->2): U -1 Push(penultimate) 2 0 32 0
0.134770308107243 3(3->4): U -1 Push(penultimate) 4 0 32 0
ns: _o33 routing-nochange 12 0.144874308107243: can't schedule command in past
    (_o343 cmd line 1)
    invoked from within
"_o343 cmd at 0.144874308107243 {_o32 ldp-trigger-by-routing-table}"
    invoked from within
"catch "$self cmd $args" ret"
    (procedure "_o343" line 2)
    (SplitObject unknown line 2)
    invoked from within
"_o343 at 0.144874308107243 {_o32 ldp-trigger-by-routing-table}"
    ("eval" body line 1)
    invoked from within
"eval $scheduler_ at $args"
    (procedure "_o3" line 3)
    (Simulator at line 3)
    invoked from within
"[Simulator instance] at $time  "$mpls_mod_ ldp-trigger-by-routing-table""
    (procedure "_o33" line 12)
    (Classifier/Addr/MPLS routing-nochange line 12)
    invoked from within
"_o33 routing-nochange 12 0.144874308107243"

I haven't enough experience with ns to solve that problem. Probably the sintax is not correct.

Can anybody help me?

Thanks.