GigabitEthernet port status is UP and Protocol is Down.

[jefferyj40]

Is the subject line status correct? I have a gigabitethernet port (3845) that went from admin down, to reset and then status Down, protocol Down. Then I had another gigabitethernt port on a different 3845 router. To show port in status of UP and protocol Down, I didn't see a reset occur on this port. Which status is correct and does the reset step affect the final status being different?

JJ

[jefferyj40]

Also on both ports there is no ethernet cable!!

[Ven Taylor]

If you shut down the port, then reloaded without saving, the port will go back to a "no shut" state.

Did you write to memory?

Ven

[jefferyj40]

I don't need it to be in a shut down state. I'm asking the question "what is the correct state for a ethernet port without a cable in it.  I see two different states for the same kind of port  UP/Down and Down/Down, also one of the ports went through a"reset" procces prior to Down/Down. Does this impact the process.

[John Blakley]

Down/Down is the normal state for a port with nothing in it.

Can you post the port config for the UP/Down port?

[jefferyj40]

interface GigabitEthernet0/1

description FastEthernet Connection to Cat6509-1 Port 3/40

ip address xxx.xxx.xxx.xxx 255.255.255.0

ip access-group 141 in

ip flow ingress

ip pim sparse-dense-mode

load-interval 30

duplex full

speed 100

media-type rj45

no mop enabled

service-policy input LAN-EDGE

!

[Ven Taylor]

Reading what you wrote the first time again...

I can think of two reasons why a switch interface would be up/down with no cable connected.

Port is configured as a routed port (no switchport)

Port is in monitor mode.

Check the port config and also check the global config for "monitor session" that references the switch port.

Ven

[jefferyj40]

The device is a 3845 router, by default all ports will be routed or either a trunk uplink.

[Ven Taylor]

That looks like it makes sense then.

The port is configured, but not connected and/or administratively shut down.

By definition, it is up/down.

Ven