Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 321
53-1002269-02
Configuring a trunk group
11
Modifying Trunk Group Membership
You can change port membership by removing individual ports from the trunk group. To remove a
port from a trunk group, use one of the following methods.
To remove ports 3 and 4 from the trunk group, enter the following command:
PowerConnect(config)# no trunk ethernet 3 to 4
Syntax: no trunk ethernet | pos <portnum> [to <portnum>]
The <portnum> parameter indicates the port you are removing.
NOTE
Make sure you enter the lower port in the range before the “to” and the higher port in the range after
the “to”.
As a shortcut, you also can enter just the lower port in the range. The software automatically
removes all higher ports in addition to the specified port. For example, to remove ports 3 and 4,
you can enter the following command:
PowerConnect(config)# no trunk ethernet 3
Therefore, for trunk group 1 – 4, the following commands are not valid:
PowerConnect(config)# no trunk ethernet 2
These commands are invalid because the trunk group cannot contain only a single port. These
commands, if the software allowed them, would result in a trunk group consisting only of port 1.
On most devices, trunk groups can contain two ports or four ports but cannot contain only three
ports. Therefore, the following command also is invalid for trunk group 1 – 4:
PowerConnect(config)# no trunk ethernet 4
This command is invalid because it would result in a trunk group containing three ports,1 – 3.
Deleting a static trunk group
Use the no trunk ethernet command to delete a static trunk group.
NOTE
To delete an LACP trunk group, use the CLI command no link-aggregate active | passive.
To delete a trunk group, use no in front of the command you used to create the trunk group. For
example, to remove one of the trunk groups configured in the examples above, enter the following
command.
PowerConnect(config)#no trunk ethernet 1 to 2 ethernet 3 to 4
Syntax: no trunk ethernet | pos <portnum> to <portnum>
Specifying the minimum number of ports in a static trunk group
You can configure devices to disable all of the ports in a trunk group when the number of active
member ports drops below a specified threshold value. For example, if a trunk group has 4 ports,
and the threshold for the trunk group is 3, then the trunk group is disabled if the number of
available ports in the trunk group drops below 3. If the trunk group is disabled, then traffic is
forwarded over a different link or trunk group.