IBM Domino 9.0 Social Edition Administrator Help

CONFIGURING

Assigning separate IP addresses to partitions on a system with a single NIC
If you use a single NIC with multiple IP addresses, you must complete additional configuration instructions, which are based on your operating system, for each server partition. Using separate IP addresses with a single NIC can have a negative impact on the computer's I/O performance.

About this task

You must be logged in as root or superuser.

To enable an IP address in IBM AIX

Procedure

1. Add one entry in the local host names file /etc/hosts for each server partition. The entry for the partition that uses the computer host name should already exist.

2. To enable an IP address, enter this command under the heading Part 2 -Traditional Configuration in the startup file (etc/rc.net). Do not enter this command for the partition that uses the computer host name.

/usr/sbin/ifconfig

interface

alias

server_name

where interface is the name of the network interface, and server_name is the name of the partitioned server -- for example:

/usr/sbin/ifconfig en0 alias server2

3. Restart the system if necessary, and test the configuration. From another computer, use the ping command with the server names. To show the network status, use the netstat command.

To disable an IP address in IBM AIX or Linux

About this task

Do not remove the IP address of a server partition that uses the computer host name as its server name.

Procedure

1. Enter this command at the console:

/usr/sbin/ifconfig

interface

delete

server_name

where interface is the name of the network interface, and server_name is the name of the partitioned server.

2. Remove the partition's name entry from the local host names /etc/hosts file.

3. Remove the corresponding ifconfig command from the system startup /etc/rc.net file.

To enable an IP address in Oracle Solaris

Procedure

1. Add one entry in the local host names /etc/hosts file for each server partition. The entry for the partition that uses the computer host name should already exist.

2. For each partition, create a file named:

/etc/hostname.

device

:

where device is the device name of the NIC, and n is a number that increments for each file name. The /etc/hostname.hme0 file should already exist and contain the computer host name.

For example, if /etc/hostname.hme0 contains the name Server1, create:

/etc/hostname.hme0:1

which contains the name Server2. and

/etc/hostname.hme0:2

which contains the name Server3.

3. Create the alias for each IP address that goes to the NIC which is hme0. At the console, enter:

/sbin/ifconfig hme0 plumb

/sbin/ifconfig hme0:n IP_address

where n is the number you created in Step 2 for each file name, and IP_address is the address assigned to the corresponding server in Step 1. For example:

/sbin/ifconfig hme0 plumb

/sbin/ifconfig hme0:1 111.123.11.96

/sbin/ifconfig hme0:2 111.123.11.22

4. To verify the IP addresses that you configured, enter:

/sbin/ifconfig -a

5. To enable each IP address that you configured in Step 3, enter:

/sbin/ifconfig hme0:

up

where n is the number assigned to the file that contains the server name. For example:

/sbin/ifconfig hme0:1 up

/sbin/ifconfig hme0:2 up

To disable an IP address, enter:

/sbin/ifconfig hme0:n down

6. To configure the NIC to support multiple IP addresses at system startup, add this ifconfig command to the startup file (probably /etc/rc2.d/S30sysident):

/sbin/ifconfig hme0 plumb

/sbin/ifconfig hme0:nIP_address

/sbin/ifconfig hme0:n up

where n corresponds to the number you created in Step 2 for each file name, and IP_address is the address assigned to the corresponding server in Step 1.

7. Test the configuration. From another computer, use the ping command with the server names. To show the network status, use the netstat command.

To disable an IP address in Oracle Solaris

About this task

Do not remove the IP address of the server partition that uses the computer host name as its server name.

Procedure

1. To disable the IP address, type:

/sbin/ifconfig hme0:

down

where n is the number assigned to the file that contains the server name. For example:

/sbin/ifconfig hme0:1 down

2. Remove the corresponding /etc/hostname.hme0:n file.

3. Remove the partition's server name entry from the local host names /etc/hosts file.

Windows

About this task

To configure a single NIC for multiple IP addresses on Microsoft Windows systems, do the following:

For Windows 2000, use the Network and Dial-up Connections icon on the Control Panel, and then the Local Area Connection icon. Click the Properties button.

Related tasks
Server setup tasks specific to TCP/IP

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