[mpls-linux-general] MPLS packet capture

[JK S. <ks...@ve...>]

Hi all,
I have configured mpls-linux-0.993 on linux kernel 2.4.5 . I have configured
two machines

**************************************************************************

                                Manual LSP beteen 2 hosts
                         ---------------------------

Setup
-----
 ---------             ---------
 |   A   |             |           |        B         |
 ---------             ---------
     |eth0                 |eth0
     |17.130               |18.114
-----------------------------------
         128.104.16.0/22

Config
------
On A:
  route add -host B gw B
  mplsadm -A -B -O gen:16:eth0:ipv4:B -f B/32
  mplsadm -A -I gen:17:0

On B:
  route add -host A gw A
  mplsadm -A -B -O gen:17:eth0:ipv4:A -f A/32
  mplsadm -A -I gen:16:0

On both:
  mplsadm -L eth0:0

Now all traffic with destination address of A or B use the LSP.

I************************************************************************

I need to use Ethereal 0.8.18 to capture MPLS packets emanating between A and B
nodes.
Can anybody tell me why I am not able to see MPLS packets though I am  running
" ethereal " or "tethereal".

Yaah ... when I run "mplsadm -d " I am able to see the messages ... but not
able to make out much from it.
In /proc/net/mpls_* labeling is ok.

I would appreciate Ur suggestions.......

Cheers !!
--jkswamy

*********************************
jkswamy
Sr. Telecom consultant
Velankani Information Systems
ks...@ve...
********************************








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