subnet length
Function
The subnet length command configures mask lengths for the initial and extended address segments being applied for a dynamic address pool.
The undo subnet length command deletes the mask lengths configured for the initial and extended address segments being applied for a dynamic address pool.
By default, no mask length of address segments is configured for any dynamic address pool.
This command is supported only on the NetEngine 8000 F1A.
Parameters
| Parameter | Description | Value |
|---|---|---|
| extend gateway-mask |
Specifies a mask of subsequent address segments applied for when IP address resources become insufficient after users go online. |
This value is in dotted decimal notation, for example, 255.255.0.0. |
| extend length2 |
Specifies a mask length of subsequent address segments applied for when IP address resources become insufficient after users go online. |
The value is 0 or an integer ranging from 16 to 30. |
| initial gateway-mask |
Specifies a mask of the initial address segment applied for. |
This value is in dotted decimal notation, for example, 255.255.0.0. |
| initial length1 |
Specifies a mask length for the initial address segment applied for. |
The value is 0 or an integer ranging from 16 to 30. |
Usage Guidelines
Usage Scenario
To configure mask lengths for the initial and extended address segments being applied for a dynamic address pool, run the subnet length initial command.
Configuration Impact
After the command is run, address segment application is triggered immediately. The mask length for address segments cannot be changed if the dynamic address pool has address segments.
If extend { length | gateway-mask } is not specified, the mask or mask length specified in initial { length | gateway-mask } is applied to extended address segments being applied for.Precautions
When this command is run, the initial address segment mask length and extended address segment mask length must be the consistent with the address segment subnet lengths configured using the network subnet length command on the DAP server. Otherwise, addresses fail to be assigned from address segments, and users fail to go online.
Example
<HUAWEI> system-view [~HUAWEI] ip pool huawei bas dynamic Info: It's successful to create an IP address pool [*HUAWEI-ip-pool-huawei] commit [~HUAWEI-ip-pool-huawei] subnet length initial 26 extend 26