How do you check how long a port has been down?
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.
How do you read a port number on a switch?
- Port numbers are assigned starting with 1.
- Switches that have 1 row of ports on a bank are assigned from left to right.
- Switches that have 2 rows of ports on a bank are assigned from top to bottom and left to right.
Why do we need port numbers?
A port is a number used to uniquely identify a transaction over a network by specifying both the host, and the service. They are necessary to differentiate between many different IP services, such as web service (HTTP), mail service (SMTP), and file transfer (FTP).
Why do my Cisco switch ports keep going down?
The Cisco’s were put in to provide PoE to our Cisco VOIP phones. The computers plugged into the Allied Telesyn switches have never had a problem dropping connection.. It’s only with the Cisco’s. 05-17-2016 07:27 AM 05-17-2016 07:27 AM
What does command rejected not a switching port mean?
Command Rejected: [Interface] not a Switching Port. In switches that support both L3 interfaces and L2 switchport, the message Command rejected: [interface] not a switching port displays when you try to enter a command related to layer 2 on a port that is configured as a layer 3 interface.
Why does my switch go down every time I start up my phone?
The issue is that every time the switch is started up the ports connected to IP phones go down (down down to be more precise). At the same time, trunk port and port connected to server are stable. Below is the example of those ports config (really nothing special about it): Building configuration…
Why does my Cisco 2960 switch keep going down?
A few months ago, they switched out our Allied Telesyn switches with PoE Cisco 2960 switches. Ever since they were put in, we have computers on our network that will randomly lose network connectivity. There doesn’t seem to be any pattern to most of the computers dropping their connection.