Additional IPs The additional IP addresses have been replaced by failover IPs You may use the information below ONLY if you still have one of the old additional IPs. Configuration of the additional IPs Each additional IP is linked to a principal IP, it is therefore an alias of the principal IP of your server. The additional IPs are divided into /27 blocks, you have to find the details of your configuration (address/netmask/broadcast) by using the command iptraf - or by clicking on the address you want to configure in your management console. sd-276:~# ipcalc 88.191.200.44/27 Address: 88.191.200.44 01011000.10111111.11001000.001 01100 Netmask: 255.255.255.224 = 27 11111111.11111111.11111111.111 00000 Wildcard: 0.0.0.31 00000000.00000000.00000000.000 11111 => Network: 88.191.200.32/27 01011000.10111111.11001000.001 00000 HostMin: 88.191.200.33 01011000.10111111.11001000.001 00001 HostMax: 88.191.200.62 01011000.10111111.11001000.001 11110 Broadcast: 88.191.200.63 01011000.10111111.11001000.001 11111 Hosts/Net: 30 Class A You are now able to configure the alias in your network configuration file, for more information you may check the example of a configuration file below or in the documentation of your favorite distribution. Example of the network configuration on Debian/Ubuntu: sd-276:~# cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 88.191.12.37 netmask 255.255.255.0 network 88.191.12.0 broadcast 88.191.12.255 gateway 88.191.12.1 auto eth0:0 iface eth0:0 inet static address 88.191.200.44 netmask 255.255.255.224 network 88.191.200.32 broadcast 88.191.200.63 auto eth0:1 iface eth0:1 inet static address 88.191.200.45 netmask 255.255.255.224 network 88.191.200.32 broadcast 88.191.200.63 Example of the configuration for Mandriva: sd-276:~# cat /etc/sysconfig/network-scripts/ifcfg-eth0:0 DEVICE=eth0:0 BOOTPROTO=static IPADDR=88.191.200.44 NETMASK=255.255.255.224 ONBOOT=yes METRIC=10 MII_NOT_SUPPORTED=yes USERCTL=no IPV6INIT=no IPV6TO4INIT=no PEERDNS=yes sd-276:~# ifup eth0:0