Chapter 5: Troubleshooting 157Problems with the LAN InterfaceProblem Corrective ActionCan’t ping any PCs onthe LAN.Check the Ethernet LEDs on the front panel. The LED should be on for aport that has a PC connected. If it is off, check the cables between yourrouter and the PC. Make sure you have uninstalled any software firewallfor troubleshooting.Verify that the IP address and the subnet mask are consistent between therouter and the workstations.