H3C S3100 Series Command Manual page 688

Parameter
from-ip-address: Start address of the stack IP address pool.
ip-address-number: Number of the IP addresses in the stack IP address pool, in the range of 1 to 16.
ip-mask: Mask of the stack IP address.
Description
Use the stacking ip-pool command to create a stack IP address pool.
Use the undo stacking ip-pool command to restore the default stack IP address pool.
You need to create an IP address pool for a stack before creating the stack. When adding a switch to a
stack, the main switch picks an IP address from the IP address pool and assigns the IP address to it.
The stacking ip-pool command can only be executed on switches that do not belong to any stack. That
is, the IP address pool of an existing stack cannot be modified.
To add a switch to a stack successfully, make sure the value of the ip-address-number argument is
larger than the number of switches currently contained in the stack.
Make sure the IP addresses in the IP address pool of a stack are successive so that they can be
assigned successively. For example, the IP addresses in an IP address pool with its start IP address
something like 223.255.255.254 are not successive. In this case, errors may occur when adding a
switch to the stack.
IP addresses in the IP address pool of a stack must be of the same network segment. For example, the
1.1.255.254 is not a qualified start address for a stack IP address pool.
Note the following when performing stack-related configurations on the main switch of a stack:
After a stack is created, the main switch automatically adds the switches connected to its stack
ports to the stack.
A slave switch quits the stack automatically when it is disconnected from the stack.
If the IP address of the management VLAN interface of the main switch (or a slave switch) is not of
the same network segment as that of the stack address pool, the main switch (or the slave switch)
automatically removes the existing IP address and picks a new one from the stack address pool as
its IP address.
Since both stack and cluster use the management VLAN and only one VLAN interface is available
on the S3100 switch, stack and cluster must share the same management VLAN if you want to
configure stack within a cluster.
Example
# Configure the IP address pool for the stack.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stacking ip-pool 129.10.1.1 5
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