Optional) Preventing Repetitive Allocation Of An Ip Address - Huawei S9300 Configuration Manual

S9300&S9300E Terabit Routing Switch
Configuration Guide - IP Service
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ip pool ip-pool-name
The IP address pool view is displayed.
Step 3 Run:
option code [ sub-option sub-code ] { ascii ascii-string | hex hex-string &<1-10>
| ip-address ip-address &<1-8> }
The DHCP option is configured.
After the option command is used, the specified option is carried by the DHCP Reply packet
returned by the DHCP server. Before using this command, ensure that you know the functions
of the option to be configured. For details on the DHCP options, see RFC 2132.
----End

3.3.7 (Optional) Preventing Repetitive Allocation of an IP Address

To prevent repetitive IP address allocation, the DHCP server pings the IP address to be allocated
before allocating it to a client.
Context
Perform the following steps on the DHCP server.
After the dhcp server ping command is executed, the DHCP server can prevent repetitive IP
address allocation. The DHCP server pings an IP address to be allocated. If there is no response
to the ping packet within a certain period, the DHCP server continues to send ping packets to
this IP address until the number of ping packets reaches the maximum value. If there is still no
response, this IP address is not in use, and the DHCP server allocates the IP address to a client.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
dhcp server ping packet number
The maximum number of ping packets is set.
By default, the maximum number of ping packets to be sent by the S9300&S9300E is 0. That
is, the S9300&S9300E does not ping the IP addresses to be allocated.
Step 3 Run:
dhcp server ping timeout milliseconds
The period in which the S9300&S9300E waits for the response is set.
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 DHCP Configuration
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