Enterasys Networks 9034313-07 Interface, Use this command to configure interfaces for IP routing

interface

interface

Use this command to configure interfaces for IP routing.

Syntax

interface vlan vlan-idloopback loop-id

Parameters

vlan vlan‐id	Specifies the number of the VLAN interface to be configured for routing.
	This interface must be configured for IP routing as described in “Pre‐
	Routing Configuration Tasks” on page 18‐1.
loopback loop‐id	Specifies the number of the loopback interface to be configured for routing.
	The value of loop‐id can range from 0 to 7.

Defaults

None.

Mode

Router global configuration mode: C3(su)‐>router(Config)#

Usage

This command enables interface configuration mode from global configuration mode, and, if the interface has not previously been created, this command creates a new routing interface. For details on configuration modes supported by the SecureStack C3 device and their uses, refer to Table 18‐2 in “Enabling Router Configuration Modes” on page 18‐2.

VLANs must be created from the switch CLI before they can be configured for IP routing. For details on creating VLANs and configuring them for IP, refer to “Enabling Router Configuration Modes” on page 18‐2.

Each VLAN interface must be configured for routing separately using the interface command. To end configuration on one interface before configuring another, type exit at the command prompt. Enabling interface configuration mode is required for completing interface‐specific configuration tasks. For an example of how these commands are used, refer to “Pre‐Routing Configuration Tasks” on page 18‐1.

A loopback interface is always expected to be up. This interface can provide the source address for sent packets and can receive both local and remote packets. The loopback interface is typically used by routing protocols, but it can also be used for management or network services such as RADIUS, SNMP, Syslog, SNTP, or sFlow. By default, if RADIUS is configured with no host IP address on the device, it will use the loopback interface 0 IP address (if it has been configured) as its source for the NAS‐IP attribute. (Administrators can assign where to source management or network service IP packets via the set interface commands.)

Each SecureStack C3 system (stack) can support up to 24 routing interfaces. Each interface can be configured for the RIP and/or OSPF routing protocols.

Note: For information about configuring tunnel interfaces, see “Configuring Tunnel Interfaces” on page 19-8.

SecureStack C3 Configuration Guide 19-3