Fa0/1 on 3745

[rhltechie]

Hi All,

I may have a need to place one of the fast ethernet ports into a specific vlan on my 3745, or rather this port needs to be a trunk. i am familiar with doing this on other devices, but for this device and this port i am clueless. is it even supported? i do not see any commands on the interface that relate to this task.

TIA,

R

[dgahm]

This will set up a 802.1Q trunk with native VLAN 1 and VLAN 10.

interface FastEthernet0/1

no ip address

duplex full

speed 100

!

interface FastEthernet0/1.1

encapsulation dot1Q 1 native

ip address 10.1.1.25 255.255.255.248

!

interface FastEthernet0/1.10

encapsulation dot1Q 10

ip address 10.100.0.1 255.255.0.0

Please rate helpful posts.

[rhltechie]

oh, i have to use sub interfaces for the vlan config? is this how it is done all an routers? it looks similiar to a pix config for vlans.

[dgahm · Accepted solution]

Any router supporting 802.1Q will use subinterfaces for each VLAN.

http://www.cisco.com/en/US/customer/products/hw/switches/ps628/products_configuration_example09186a00800ef797.shtml

[rhltechie]

ah, ok. thank you, this link was very helpful.