Port Trunking is a feature that allows multiple links between switches to work as one virtual link or aggregate link. Trunks can be defined for similar

port types only. For example, a 10/100 port cannot form a Port Trunk with a gigabit port. For 10/100 ports, trunks can only be formed within the

same bank. A bank is ports 1 to 8, ports 9 to 16, ports 17 to 24, or port 25 and port 26 (using an FSM726S as an example), on the same switch unit.

Up to four trunks can be enabled at the same time within a stack. To set up a trunk, use the space bar to select the ports that will participate in the

trunk. Spanning Tree will treat trunked ports as a single virtual port.

Note: you must use straight-though cables for all links in the trunk. Do not use crossover cables.

Note: you must disable auto-negotiation on the ports in a trunk prior to setting up the trunk.