Clear trunk command question

[sknorr]

I'm trying to clear all vlans off this port except vlan 1 and 510. Here is the command that I use but, it doesn't seem to work.

(enable) clear trunk 5/14 2-509,511-1005,1025-4094

Removing Vlan(s) 2-509,511-1005,1025-4094 from allowed list.

Port 5/14 allowed vlans modified to 1.

(enable)

show config only shows that vlan 1 is allowed. Why? I want to trunk vlan 510 as well.

clear trunk 5/14 2-1005,1025-4094

set trunk 5/14 nonegotiate dot1q 1

[mdoldan]

Please specify platform ...

ie. Cat 5509 CatOS, Cat 6513 Native Mode, etc..

try this:

set trunk 5/14 on dot1q 1,510

[rjackson · Accepted solution]

The command is additive. If 510 was not allowed this command will not allow it, it only adds to the list of not allowed vlans. To add it back use the command specified above.