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Installing 3Com Advanced Server Features For Windows
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Specifying a Dedicated IP Address
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:
Changing an IP Address
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
Class
Byte 1
Specify only bytes
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.
