Switch – DELL PowerConnect 6248 switch – Admin Port Speed 1000M nowhere to be found

portswitch

This is driving me crazy.
I'm configuring the switch from the web interface.

Under: Switching > Ports > Port Configuration

I disable 'Auto Negotiation', I set the 'Admin Duplex' to 'FULL', I click on the 'Admin Port Speed' drop-down.. OOPS, only '10M' and '100M' are available.. does anyone knows where is the '1000M'?

If I set it to Auto Negotiation 'Enable', the port is well capable to work on 1000/Full, however I need to hard set the settings for a special device.

Has anyone seen this before?
(Firmware 3.2.1.3)

Best Answer

There is no "hard coded" option for gigabit ethernet. I believe that the protocol specification for 1000BASE-T dictates that it is available via auto-negotiation only.

From Wikipedia:

Autonegotiation is a requirement for using 1000BASE-T[8] according to Section 28D.5 Extensions required for Clause40 (1000BASE-T).

Which is itself referencing this IEEE PDF.

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