Selecting a group of ports to edit

From a Port Status Overview page, the first column contains an empty checkbox. After checking the boxes for the group of ports you wish to edit, click on the Change Settings tab.

All of the selected ports will be listed in the Edit Port Information page.

Pitfalls of disabling auto-negotiation

Many people think that if they set a switch port to a specific mode (say 100Mb/full-duplex), and then plug in a workstation which uses auto-negotiation, it should automatically sync up with the switch port and configure itself to 100Mb/full-duplex.  In fact, auto-negotiation is an active procedure which requires both sides of the Ethernet link to transmit information about their capabilities; if the switch port fails to participate (because auto-negotiation is disabled), the workstation will fall back to 100Mb/half-duplex, creating a duplex mismatch which will severely degrade the performance of the link.

If for some reason you really need to disable auto-negotiation, you should be very careful to hand-configure the same speed and duplex settings on both ends of the Ethernet link (i.e. the switch port and the workstation).