cascadded Switches ERS4950

[Hatem]

Hello,

I installed 2 switches like this :

---------------                                   -----------------------------------------                                -----------------------------------------

    VSP          ------------------------   (1/49)       SW1         (1/50) --------------------------(1/49)          STACK2       

---------------                                   -----------------------------------------                                 ----------------------------------------- 

the problem is that I can not ping STACK2. they are both configured with SPBM.

But, when I connect STACK2 directly to VSP, I can ping it.

both Switches are present in isis adjency and topology. I guess it's not a problem of ISIS or SPBM configuration

I can also ping STACK2 from SW1 and SW1 from STACK2.

they got the same default gateway and I can not ping the gateway from STACK2. 

Thanks for your help

[TQU · Accepted solution]

Hello Hatem,

You should disable the overload parameter on SW1. 
Trafic can't go through with it. 

Regards,
Théo