### Verify the Ethernet Cabling

Use this procedure to troubleshoot network cabling problems.

1. Check the Ethernet cable. Verify the following:

- The Ethernet cable is connected securely at both ends.
- The Ethernet cable is pinned correctly.
- The quality of the cable is sufficient for the cable length and the cable environment. Common Category 5 Unshielded Twisted Pair cabling can generally be run 300 meters at a speed of 10 Mbps and 150 meters at higher speeds. Consult an Ethernet cable manufacturer for a recommended cable for your configuration.

2. Ensure that you are not connecting PortServer or PortServer II to a 100 mbps Ethernet network. While PortServer TS 8/16 and PortServer TS 2/4 support 10/100 mbps, PortServer and PortServer II support 10 mbps only.
3. If you have a PortServer or PortServer II and are using a Thinnet (10Base2) cable, make sure the cable selector switch on the PortServer is in the left-handed position. If you are using a Twisted Pair (10Base2) cable, make sure the cable selector switch on the PortServer is in the right-handed position.
4. Verify your Ethernet hub. See your Ethernet hub manual.