3Com CoreBuilder 3500, Implementation Manual, Page: 152 / 592

152 C
HAPTER
8: T
RUNKING
Modifying Trunks
You can modify a trunk in two ways:
■
You can modify a trunk’s characteristics (for example, the operating
mode or the TCMP state).
■
You can add or remove a port from the trunk.
Important
Considerations
■
You must keep at least one port that you defined in the original trunk.
To completely redefine a trunk configuration, remove the trunk and
define a new one.
■
You cannot modify, add, or remove ports that are part of different
trunks from the one you that you are modifying.
■
To avoid configuration errors, do not modify FDDI station mode
port-pairs when any of the ports in the pair are members of a trunk.
■
If you have more than one media type on your system (for example,
Fast Ethernet and Gigabit Ethernet), you are prompted for a media
type before you are prompted for the trunk information.
■
Any changes that you make to the trunk’s characteristics take effect
immediately and do not interrupt trunk operations. If you add or
remove a port, however, you must reboot the system to implement
the change.
■
In an FDDI trunk:
■
You cannot modify FDDI station mode port pairs when any of the
ports in the pair are in a trunk.
■
When you modify the station mode, any FDDI ports that are
associated with VLANs or a trunk are removed from the VLAN or
trunk.
■
If you change an FDDI port pair from SAS to DAS, select the pair using
only the lower of the two port numbers, as you do with a trunk
anchor port.