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Problem with Celerra and QoS, any suggestions???

Hi Guys,

I have a lot of troubles with the Celerra. My configuration is as follows... we have a core system with a 48Port gigabit ethernet module with 2 portchannels for 2 celerra blades. I have migrated the Network to the new QoS Design. A MQC is enabled on every access switch and the uplinks and core links trust the DSCP values. The QoS works overall, so the SAP, signalling and RTP traffic is tagged. But the Performance on the Celerra is pretty bad. Uploads work well (4-6 MB/s) but Downloads are bad about 300KB/s and that isn't the perfermance I'am looking for.

One additional Point, if I disable Qos on the access switch the performance increase to about 6MB/s.

Have you guys any idea?

Regards

Martin

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