[f-nsp] LTE base station on FES2402

[Rens]

Dear all,

 

We are currently testing LTE equipment and we see serious speed problems
when connecting the LTE base station on a FastE port of a FES2402

We see packet-loss and packet out-of-order coming out of the FES2402 (before
entering to the LTE base station) as result we see very low TCP throughputs

 

This leads us to suspect that there may be a buffer overrun or high packet
jitter in the FES2402 switch, when going from GigE to FastE or vice versa.

 

The downlink capacity we can get out of this LTE base station is 80Mbps so
that should be doable for a FastE port

 

With the LTE base station on a FastE port we get 40Mbps downstream and when
we move it to a GigE port we get 80Mbps down

 

When I swap the FES2402 with a Cisco 3560 I get 80Mbps down with the LTE on
a FastE port

However the uplink has to be GigE port of the Ciscp else if all ports of the
Cisco are FastE I get the same results as with the LTE on FES2402 FastE port

 

Has anyone ever seen this kind of problem?

Is there any magic command to solve this?

 

All help appreciated

 

Regards,

 

Rens

 

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