Configuring Domain Name Server (Dns) Resolver - Foundry Networks FESX Manual

Configuring IP
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
1
from one Layer 3 VLAN to the other, without using an external router.
You can configure IP 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.
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:
FESX424 Router(config)# vlan 2 name IP-Subnet_1.1.2.0/24
FESX424 Router(config-vlan-2)# untag e1 to 4
FESX424 Router(config-vlan-2)# router-interface ve1
FESX424 Router(config-vlan-2)# interface ve1
FESX424 Router(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>
See the syntax description in "Assigning an IP Address to an Ethernet Port" on page 16-17.
Deleting an IP Address
To delete an IP address, enter a command such as the following:
FESX424 Router(config-if-e1000-1)# no ip address 1.1.2.1
This command deletes IP address 1.1.2.1. You do not need to enter the subnet mask.
To delete all IP addresses from an interface, enter the following command:
FESX424 Router(config-if-e1000-1)# no ip address *
Syntax: no ip address <ip-addr> | *

Configuring Domain Name Server (DNS) Resolver

The Domain Name Server (DNS) resolver feature lets you use a host name to perform Telnet, ping, and traceroute
commands. You can also define a DNS domain on a Foundry Layer 2 Switch or Layer 3 Switch and thereby
recognize all hosts within that domain. After you define a domain name, the Foundry Layer 2 Switch or Layer 3
Switch automatically appends the appropriate domain to the host and forwards it to the domain name server.
For example, if the domain "newyork.com" is defined on a Foundry Layer 2 Switch or Layer 3 Switch and you want
to initiate a ping to host "NYC01" on that domain, you need to reference only the host name in the command
instead of the host name and its domain name. For example, you could enter either of the following commands to
initiate the ping:
FESX424 Router# ping nyc01
FESX424 Router# ping nyc01.newyork.com
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).
December 2005 © Foundry Networks, Inc. 16 - 19