3Com Switch 8800 Configuration Guide Chapter 11 IP Address Configuration11-6II. Network diagramConsole cableSwitchPCConsole cableSwitchPCFigure 11-3 Network diagram for IP address configurationIII. Configuration procedureEnter VLAN interface 1.[SW8800] interface vlan-interface 1Configure the IP address for VLAN interface 1.[SW8800-Vlan-interface1] ip address 129.2.2.1 255.255.255.011.5 Troubleshooting IP Address ConfigurationFault 1: The switch cannot ping through a certain host in the LAN.Troubleshooting can be performed as follows:1) Check the configuration of the switch. Use the display arp command to view theARP entry table that the switch maintains.2) Check which VLAN includes the port of the switch used to connect to the host.Check whether the VLAN has been configured with a VLAN interface. Then checkwhether the IP address of the VLAN interface and that of the host are on the samenetwork segment.3) If the configuration is correct, enable the ARP debugging on the switch, and checkwhether the switch can correctly send and receive ARP packets. If it can only sendARP packets but cannot receive them, errors may occur on the Ethernet physicallayer.
