© Copyright Lenovo 2016 Chapter 2: Initial Setup 77 RADIUS TACACS+ NTPLoopback Interface Limitations ARP is not supported. Loopback interfaces will ignore ARP requests. Loopback interfaces cannot be assigned to a VLAN.Default GatewaysTo set up a default gateway:1. At the prompt, select an IP default gateway for configuration, or skip defaultgateway configuration:Enter the number for the IP default gateway to be configured. To skip defaultgateway configuration, press without typing a gateway number and go to“IP Routing” on page 77.2. At the prompt, enter the IPv4 address for the selected default gateway:Enter the IPv4 address in dotted decimal notation, or press withoutspecifying an address to accept the current setting.3. At the prompt, enter y to enable the default gateway, or n to leave it disabled:4. The system prompts you to configure another default gateway:Repeat the steps in this section until all default gateways have been configured.When all default gateways have been configured, press without specifyingany number.IP RoutingWhen IP interfaces are configured for the various IP subnets attached to yourswitch, IP routing between them can be performed entirely within the switch. Thiseliminates the need to send inter‐subnet communication to an external routerRS G8264(config)# ip radius source interface loopback <1‐5>RS G8264(config)# ip tacacs source interface loopback <1‐5>RS G8264(config)# ntp source loopback <1‐5>IP default gateways:Enter default gateway number: (1 4)Current IP address: 0.0.0.0Enter new IP address:Enable default gateway? [y/n]Enter default gateway number: (1 4)
