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CSS11501 Ethernet Port stops working

We've had a CSS11501 installed for around 18 months. In the past 8 months we've had three occurrences were we loose IP connectivity on the uplink from the CSS to a Cisco 3560 however nothing has changed. When the issue occurs we are unable to ping the C3560 from the CSS and vice versa and all IP connectivity to servers attached to the CSS is lost from the C3560. The first time this occurred we rebooted the CSS and the issue cleared. The second time this occurred we physically move the UTP cable providing the uplink to the C3560 from port1 on the CSS to port 2 and the problem cleared. We equipment shows no events within the logs.

I've searched the bug database but have not found anything matching this issue. We are using version sg0810106 (08.10.1.06).

I would appreciate any advice and a suggested fix from anyone else who may of had a similar issue.

Thanks,

Chris

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Cisco Employee

Re: CSS11501 Ethernet Port stops working

All I can think off is if they are in auto-negotiate, they could fail to negotiate.

Can you try to hardcode the speed and duplexity on both the CSS and the router.

Gilles.

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