Cisco ESW-540-48 Administration Guide - Page 43

Networking Configuring the LAN 2 Configuring the LAN For most applications, the default DHCP and TCP/IP settings of the security appliance are satisfactory. However, you can use the LAN Configuration page to change these and other settings. • About the Default LAN Settings • Configuring the LAN • Viewing the LAN Status • VLAN Configuration • DHCP Reserved IPs • DHCP Leased Clients • Configuring an IGMP Proxy • Configuring the Optional Port as a LAN Port About the Default LAN Settings • By default the LAN of the router is configured in the 192.168.75.0 subnet and the LAN IP address of the router is 192.168.75.1. • By default, the security appliance acts as a Dynamic Host Configuration Protocol (DHCP) server to the hosts on the WLAN or LAN network. It can automatically assign IP addresses and DNS server addresses to the PCs and other devices on the LAN. With DHCP enabled, the IP address of the security appliance is the gateway address to your LAN. If you want another PC on your network to be the DHCP server or if you are manually configuring the network settings of all of your PCs, disable DHCP and enter the appropriate settings. • Instead of using a DNS server, you can use a Windows Internet Naming Service (WINS) server. A WINS server is the equivalent of a DNS server but uses the NetBIOS protocol to resolve hostnames. The security appliance includes the WINS server IP address in the DHCP configuration when acknowledging a DHCP request from a DHCP client. • By default, your LAN is configured for IPv4 addressing. If you need to enable IPv6 addressing, see Configuring IPv6 Addressing, page 77 and Configuring the IPv6 LAN, page 80. Cisco SA500 Series Security Appliances Administration Guide 43