Use FastEthernet port as uplink (Cisco 3500)

systembeh · ‎02-07-2007

Hey,

I have a Cisco 3500 with 48 port and 2 uplink ports. When i use a fastethernet port as uplink i get the following error:

"%SPANTREE-2-BLOCK_PORT_TYPE: Blocking FastEthernet0/42 on vlan 1.Inconsistent port type." and the port is disabled. I tried several spanning-tree modes and mode trunk on that port but it is still not working. I cleared the configuration from the switch before i started. The two other uplink port working fine but on that location we don't have glassfibre. :-(

ankbhasi · ‎02-07-2007

Hi Friend,

Can you confirm the configuration of the uplink port and also the port on which you have connected this uplink port.

Also go through this link which may be helpfull

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00801d11a0.shtml#topic1

HTH

Ankur

glen.grant · ‎02-07-2007

Try deleting the vlan.dat file in flash and reboot the switch and start over.

systembeh · ‎02-07-2007

I done it!

I found a document with the solution. Try this:

interface FastEthernet0/1

port group 1

switchport trunk encapsulation dot1q

encapsulation dot1Q.

switchport mode trunk

Now you can use port 1 as uplink from another switch. I don't know how, but it does.

(I'm happy now)