How can you tell if a port is down on a Cisco switch?

How can you tell if a port is down on a Cisco switch?

In order to check to see how long the port is in Up or Down status, use the show interfaces [interface id] command. In the example, under the show interfaces FastEthernet0/1 command, look at a line that shows something such as: Last input 00:00:41, output 00:00:00, output hang never.

What does DOWN DOWN mean Cisco?

So if the line shows as down down then there is a problem with physical connectivity (and it has no ability to transmit and receive). If the line shows up down then we believe that we have physical connectivity but no ability to transmit and receive on the interface.

What is Port down?

Down : The port is not enabled, has no cables connected, or is experiencing a network error. The port’s speed and duplex (data transfer operation) setting. 10/100/1000Base-T Ports: Auto-MDIX (default): Senses speed and negotiates with the port at the other end of the link for port operation (MDI-X or MDI).

How do you reset the interface port on a Cisco switch?

Reset interface (port) to default

1. Switch> en.
2. Switch# conf t.
3. Switch(config)# default interface Gi1/0/1.
4. Switch(config)# exit.

How do I see active ports on a Cisco switch?

You can display summary or detailed information on the switch ports using the show port command. To display summary information on all of the ports on the switch, enter the show port command with no arguments. Specify a particular module number to see information on the ports on that module only.

Why would a port be down?

How do I admin down a port?

You can mark an interface administratively down with the “shutdown” command, and turn it on with the “no shutdown” command. If an interface is shut down, it will display administratively down when using the “show interface” command.

How do I bounce a port on a Cisco switch?

What exactly does bouncing a switch port do?

1. check the switch’s ip cache to see if the ip addr of the ILOM is in there, it’s never there.
2. bounce the switch port Gi0/1 (shut/ wait 10 secs/ no shut)
3. check switch’s arp cache again and sure enough the ILOM ip addr is in there.
4. ping the ILOM and it succeeds.

How do you reset a port?

To do this:

1. Right-click on My Computer and select Properties.
2. Select the Hardware tab and open Device Manager.
3. Under ‘Ports (COM & LPT)’, right click on the COM port and select Properties.
4. Select the Port Settings tab and press the Advanced button.

How do I reset my interface?

From the WebUI:

1. Navigate to Network > Interfaces and highlight the interface that should be reset.
2. Use the ‘Delete’ option to reset the interface back to default state:

How many ports does a Cisco switch have?

Usually, there are 12 ports PoE Switch in Cisco Compact switch family.