I am connecting 2 cisco switches but no traffic passes between the 2?

Question

I have 2 cisco switches connected via fiber GBIC.

They have a link light, both report: GigabitEthernet up/line protocol up.

Both switches interfaces are configured as follows:

Interface GigabitEthernet 3/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2
switchport mode trunk


Now I plug my laptop into one the the access port and try to ping the computer connected to the access port on the other side and get no connection... what am I missing?

Answer 1

You may need to define the vlan under global config and set the ports that your clients are connected on to the appropriate vlan that you are trunking.

Answer 2

If you do a "show interface trunk" what is the status of your trunk? Are the PC's in the same VLAN, or different VLAN's? If they are in different VLAN's (and they would have to be in VLAN's 1 and 2 since no others are defined across the trunk) then you need a device that can route between the two. Is this for a lab?

Answer 3

Have you added routes for your Two Vlans?