3com 3C990B-TX-M Manual De Usuario

5      Installing 3Com Advanced Server Features For Windows

48

Bidirectional load balancing requires that you specify a dedicated IP address for the load 
balancing group. This address specifies a Network ID and a Host ID, and it must be unique 
(not used elsewhere on the network). For example:

You can specify the dedicated IP address in the Create Group or Group Properties dialog 
boxes. You cannot specify the bytes for the Network ID; they are fixed. Specify the bytes 
for the Host ID for various classes of subnets as follows:

If another device is using a bidirectional load balancing group's dedicated IP address, you 
must change either the other device’s IP address or that of the load balancing group. Use 
the appropriate procedure below:

Byte 1

Byte 2

Byte 3

Byte 4

Class A

Network ID

Host ID

125

24

1

253

Class B

Network ID

Host ID

139

25

2

253

Class C

Network ID

Host ID

193

26

3

253

A

126

2, 3, and 4 (the three rightmost boxes).

B

128 - 191

3 and 4 (the two rightmost boxes).

C

192 - 223

4 (the rightmost box).

Changing the Other 
Device's IP Address

After you change the other device's address, restart receive load balancing as 
follows:

1 In the Load Balancing/RSL window, select the group that had the 

duplicate address.

2 Click Properties.

3 In the Properties dialog box, click OK.

4 In the Load Balancing/RSL window, click OK to exit the window and 

restart Windows.

Changing the Group's 
Dedicated IP Address

1 In the Load Balancing/RSL window, select the group that has the 

duplicate address.

2 Click Properties.

3 In the Properties dialog box, enter a new IP address and click OK.

4 In the Load Balancing/RSL window, click OK to exit the window and 

restart Windows.