CE-500 VLAN trunks

[j.spiniak]

I have not been able to configure a VLAN trunk at a CE-500. I configure the port using CNA as router and specify the native VLAN, but I do not know where to specify the allowed VLANs. The port is connected to a Cisco Router with sub-interfaced configured. When I click on "modify" the smartport, an small windows quicky opens and closes, only leaving an option for the native VLAN. What am I doing wrong? How do I specify a port as a trunk port?

Thanks a lot for the help.

Juan S

[a-vazquez]

I believe you are aware of creating the standard Cisco IOS procedure for creating VLAN trunks.

under the interface configuration mode, in which you need to create a trunk,

switchport mode trunk

switchport mode trunk encapsulation isl/dot1q

switchport mode trunk native vlan

switchport mode trunk allowed vlans

But if you are already using these commands correctly, still you have the problem, I want you to let me know the following informations.

1. What error message you receive at the console while implementing trunking?

2. What is the other end device with which you are trying to establish trunk?.