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[jameshaworth]

Hello,

We have several Linux servers connected to our D-Link DES-1252 switches.

Occasionally, we will find we cannot SSH or Ping to a server. The activity light on the port blinks as normal but we cannot reach it.

The solution is to change ports, which instantly restores connectivity.

I reset the statistics on the D-Link and this is what the statistics on the port look like when the problem occurs:

TX OutOctets 0 OutUcastPkts 0 OutNUcastPkts 0 OutErrors 0 LateCollisions 0 ExcessiveCollisions 0 InternalMacTransmitErrors 0

RX InOctets 466170 InUcastPkts 0 InNUcastPkts 7201 InDiscards 0 InErrors 0 FCSErrors 0 FrameTooLongs 0 InternalMacReceiveErrors 0

As you can see, nothing is being transmitted to the server.

Can anyone suggest why this may be happening?

[Fatman]

duplex setting shown on the switch and server?

[jameshaworth]

Duplex setting is Auto on the switch and forced at 100mbps on the Linux server.

[Fatman]

If you lock down a full duplex setting on one side you must lock down a full duplex setting on the other side or you will get a duplex mismatch.  If you can only lock down on one side, you must use half duplex.  Try setting both sides to autonegotiate.

[jameshaworth]

Ok, I'll give that a go.

Thanks.