Hi all, I have a strange problem with the optical gigabit interface of a Cisco switch 7609. This is the problem: I have two 7609 cisco switch (A and B) cross connect with a optical fiber. All port of both switches are configured as followed:
switchport switchport mode acces shutdown no cdp enable no ip address end
I have connect two ports of the switches and I brough up the interface. I got the following result if i tun 'show ip interface brief ' on the switches:
SW A - SW B port 1 - port 1 --> link down protocol down port 2 - port 1 --> link up protocol up port 1 - port 2 --> link up protocol up port 2 - port 2 --> link up protocol up
Have anyone some idea for the possible cause of the problem?