Foundry Networks Switch and Router Installation And Configuration Manual page 464

Foundry Switch and Router Installation and Configuration Guide
10. Select the loopback interface from the Port field's pulldown menu. For example, to select loopback interface
1, select "lb1". (If you are configuring a Chassis device, you can have any slot number in the Slot field.
Loopback interfaces are not associated with particular slots or physical ports.)
11. Enter the loopback interface's IP address in the IP Address field.
12. Enter the network mask in the Subnet Mask field.
13. Click the Add button to save the change to the device's running-config file.
14. Select the Save link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device's flash memory.
Assigning an IP Address to a Virtual Interface
A virtual interface is a logical port associated with a Layer 3 Virtual LAN (VLAN) configured on a Layer 3 Switch.
You can configure routing parameters on the virtual interface to enable the Layer 3 Switch to route protocol traffic
from one Layer 3 VLAN to the other, without using an external router.
You can configure IP, IPX, or AppleTalk routing interface parameters on a virtual interface. This section describes
how to configure an IP address on a virtual interface. Other sections in this chapter that describe how to configure
interface parameters also apply to virtual interfaces.
NOTE: The Layer 3 Switch uses the lowest MAC address on the device (the MAC address of port 1 or 1/1) as
the MAC address for all ports within all virtual interfaces you configure on the device.
For more information about VLANs and how to configure them, see "Configuring Virtual LANs (VLANs)" on
page 25-1.
USING THE CLI
To add a virtual interface to a VLAN and configure an IP address on the interface, enter commands such as the
following:
BigIron(config)# vlan 2 name IP-Subnet_1.1.2.0/24
BigIron(config-vlan-2)# untag e1 to 4
BigIron(config-vlan-2)# router-interface ve1
BigIron(config-vlan-2)# interface ve1
BigIron(config-vif-1)# ip address 1.1.2.1/24
The first two commands in this example create a Layer 3 protocol-based VLAN name "IP-Subnet_1.1.2.0/24" and
add a range of untagged ports to the VLAN. The router-interface command creates virtual interface 1 as the
routing interface for the VLAN. The last two commands change to the interface configuration level for the virtual
interface and assign an IP address to the interface.
Syntax: router-interface ve <num>
Syntax: interface ve <num>
The <num> value can be from 1 – 8 on a chassis Layer 3 Switch. The value can be from 1 – 4 on a stackable
Layer 3 Switch.
Syntax: [no] ip address <ip-addr> <ip-mask> [secondary]
or
Syntax: [no] ip address <ip-addr>/<mask-bits> [secondary]
Deleting an IP Address
To delete an IP address, enter a command such as the following:
BigIron(config-if-1/1)# no ip address 1.1.2.1
1.Foundry's feature that allows routing between VLANs within the same device, without the need for external
routers, is called Integrated Switch Routing (ISR). See "Integrated Switch Routing (ISR)" on page 25-4.
15 - 22
1
December 2000