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New Member

Slow throughput Nexus 5k 10GB to 1GB

Hello,

We have a Nexus 5020 with a FEX 2248. Server A is directly connected with 10G at the Nexus 5k and Server B with 1G at the FEX. Both servers are in the same Vlan and running with Linux (Ubuntu 11.10 and Scientific 6.1).

By running a bidirectional iperf-test, the throughput from Server B to A (1G to 10G) is 940 Mbits/sec and from Server A to B (10G to 1G) is only 140 Mbits/sec.

The performance from Server A to B is not favorable for e.g. a file server.

Can anybody help to optimize ?

Unidirectional tests give in both directions 940 Mbits/sec.

Thanks

2 REPLIES
New Member

Slow throughput Nexus 5k 10GB to 1GB

Hi,

I have discovered the same issue in an environmment with 2 x Catalyst 4500-X in VSS.

Regards.

Andre

Hall of Fame Super Gold

Slow throughput Nexus 5k 10GB to 1GB

Andre,

Your issue is not "the same".  You've got a 4500X in VSS but the OP is a Nexus.  Two different beast. 

Can I reqest if you create a new thread so it won't confuse other people?

When you do, please also post the output to the following commands: 

1.  sh interface ;

2.  sh run interface ; and

3.  sh counter interface

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