Uplink Ports on Catalyst 2960

Posted on 2009-05-02
Last Modified: 2012-05-06
What are the uplink ports used for? All my interfaces, including the uplink, are Gigabit.

If I use the Cisco Network Assistant, I can change any of the ports other than the uplink ports, to a dot1q trunk. Why can't I do this on the uplink ports?
Question by:Tercestisi
    LVL 6

    Accepted Solution

    Uplink ports are designed to connect to your core network, the main ports are designed to connect to your PC's / servers / etc.  The uplink ports are there so that you do not need to use one of your other ports as an uplink to your network.  A lot of times, the uplink ports have the option to use fiber instead of cat 5 / 5E / 6 cable.

    Author Comment

    That's what I figured... I am curious as to why setting the uplink ports to trunk mode is not available in the Cisco Network Assitant; I should be able to assign an uplink port as a trunk via CLI?
    LVL 3

    Expert Comment

    My experience is that the only difference in the uplink ports is that they live on their own backplane independent of the main access ports.  I'm not a GUI person so I'm not sure why you cannot see the trunk option there, but I have personally configured uplink ports as trunks in the CLI.

    conf t
    interface g1/0/1
    switchport mode trunk
    switchport trunk encapsulation dot1q

    Author Comment

    Yes, I did work via CLI.; thanks.

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