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
With the same optical fiber cable i have connect two ports of the switches and I brough up the interface.
For each pair of port, I got the following result if i run '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
Why if i connect port 1 on both switches the link don't brought up?
Have anyone some idea for the possible cause of the problem?
Thank you
BR
\Sergio
