Re: [mpls-linux-general] configuration problem

[baim <j0...@te...>]

On Sat, 03 Jul 2004 18:57:40 +0300
  Itrat Rasod Quadri <iq...@cc...> wrote:
>Hello,
>
>Sorry to bother you on this subject once again but I have 
>rechecked the 
>configurations again and again and I cannot find anything 
>wrong there. If I 
>can send the packet from one PC to another using the MPLS 
>backbone then it is 
>obvious that I can do the same in the reverse direction 
>but unfortunately this 
>is not happening. I will now have to use another physical 
>path for the 
>response.
>
>Thanks for all the help.
You have to configure your router in both direction. 
example "

R1 ||-----------|| R2 ||------------|| R3
eth0           eth0   eth1         eth0

In your previus configuration R1 can send to R3 over MPLS 
but R3 couldn't send to the R1 over the same MPLS path. 
This because you just configure :
eht0 R1 : as outgoing label
eth0 R2 : as incoming
eth1 R2 : as outgoing
eth0 R3 : as incoming

To make R3 send packet through same MPLS path, just 
configure your with the same way that you have done, but 
in opposite direction. Its mean :
eth0 R3 : plus outgoing
eth1 R2 : plus incoming
eth0 R2 : plus outgoing
eth0 R1 : plus incoming

But becarefull when you try to binding the route to the 
label key (example : 0x2, 0x3). Make sure that you have 
bind to the right key.

May be Prim could give you more satisfy answer
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