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| Sun Ethernet Fabric Operating System ### SLB Administration Guide

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## Set Up the Server

Each server needs to have a minimum of two interfaces set up, one interface for the actual device and another interface for a loopback used as an IP address alias.

1. Set up the physical interface.

       server1% ifconfig ixgbe0 plumb
       server1% ifconfig ixgbe0 192.0.0.1 netmask 255.255.255.0 up

2. Set up the loopback interface.

       server1% ifconfig lo0:1 plumb
       server1% ifconfig lo0:1 10.10.10.1 netmask 255.255.255.0 up

       server1% ifconfig -a

       lo0:1:flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
               inet 10.10.10.1 netmask ffffff00
       ixgbe0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
               inet 192.0.0.1 netmask ffffff00 broadcast 192.0.0.255
               ether 0:1b:21:53:6e:e0

3. Add a route to reach the client network.

       server1% route add 20.0.0.0/24 192.0.0.100

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