If the switch has link problems, such as traffic that is not being received on a switch port, verify the port status, and verify that the port settings are correct. You should also verify that the settings of switch port before connecting a device to it.
Port |
The number of the port, including
port type (such as Fa for Fast Ethernet and Gi for Gigabit Ethernet),
the module slot number (0, 1, or 2), and the specific port number. The Ethernet Management port is Fa0. |
Description |
The description of the port.
We recommend providing a port description to help identify the port during monitoring and troubleshooting. The description can be the location of the connected device or the name of the person using the connected device. |
Status |
The state of the port. The state can be up, down, or administratively (manually) enabled or disabled. For explanations of the colors used in this column, click Legend.
We recommend disabling the port if the port is not in use and is not attached to a device.
An example of when to change this setting is during troubleshooting. You can troubleshoot a suspected unauthorized connection by administratively disabling the port |
VLAN |
The VLAN ID to which the port belongs (also known as its
VLAN membership). The default is 1.
If the port belongs to more than one VLAN, trunk appears in this column. If the port is configured as a router, routed appears in this column.
Note: To assign a port to one or more VLANs,
use Network Assistant or the CLI.
Devices that are attached to the switch ports in the same VLAN can communicate with each other and can share the same data broadcasts and system resources. Devices that are attached to switch ports in different VLANs cannot communicate with each other through the switch. Communication between VLANs must go through a router or a Layer 3 switch. |
Speed |
The operating speed of the port. The speed can be 10, 100,
or 1000 Mb/s or 10 Gb/s.
An example of when to change this setting is during troubleshooting. If you are troubleshooting a connectivity problem, you can change this setting to see if the switch port and connected device have a speed mismatch. |
Duplex |
The duplex state of the port. The duplex mode can be full
or half duplex.
On Gigabit Ethernet ports only, you cannot set the port to half duplex if the port speed is set to Auto.
An example of when to change this setting is during troubleshooting. If you are troubleshooting a connectivity problem, you can change this setting to verify if the switch port and connected device have a duplex mismatch. |