Allied Telesis AT-S79 - Manual (Page 254)

Chapter 23: Port Trunking
254 Section II: Using the Web Browser Interface
Modifying a Port Trunk
This procedure adds and removes ports from a port trunk.
Caution
Before you modify a port trunk, disconnect the cables from the ports
of the trunk. Adding or removing ports from a trunk without first
disconnecting the cables can create loops in your network topology,
which can cause broadcast storms and poor network performance.
To add or remove ports from a trunk, perform the following procedure:
1. From the Bridge folder, select Spanning Tree.
2. From the Spanning Tree folder, select Trunking.
The Trunking page is shown in Figure 69 on page 252.
3. Click the status of the port trunk to be modified and change the status
from Enable to Disable.
4. Click Apply.
5. To add or remove a port from a trunk, click the dialog box for the port
in the corresponding trunk row. A check in a box indicates the port is a
member of the trunk. No check means the port is not a member.A port
trunk can contain up to eight ports.
6. Click Apply.
7. Modify the port trunk on the other switch and reconnect the cables.