Loopback Interface Limitations; Default Gateways; Ip Routing - Lenovo RackSwitch G8264 Application Manual

Loopback Interface Limitations

Default Gateways

1. At the prompt, select an IP default gateway for configuration, or skip default
gateway configuration:
2. At the prompt, enter the IPv4 address for the selected default gateway:
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:

IP Routing

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 RADIUS
RS G8264(config)# ip radius source­interface loopback <1‐5>
 TACACS+
RS G8264(config)# ip tacacs source­interface loopback <1‐5>
 NTP
RS G8264(config)# ntp source loopback <1‐5>
ARP is not supported. Loopback interfaces will ignore ARP requests.

 Loopback interfaces cannot be assigned to a VLAN.
To set up a default gateway:
IP default gateways:
Enter default gateway number: (1­4)
Enter the number for the IP default gateway to be configured. To skip default
gateway configuration, press <Enter> without typing a gateway number and go to
"IP Routing" on page 77.
Current IP address: 0.0.0.0
Enter new IP address:
Enter the IPv4 address in dotted decimal notation, or press <Enter> without
specifying an address to accept the current setting.
Enable default gateway? [y/n]
Enter default gateway number: (1­4)
Repeat the steps in this section until all default gateways have been configured.
When all default gateways have been configured, press <Enter> without specifying
any number.
When IP interfaces are configured for the various IP subnets attached to your
switch, IP routing between them can be performed entirely within the switch. This
eliminates the need to send inter‐subnet communication to an external router
77
Chapter 2: Initial Setup