Huawei S9300 Configuration Manual page 74

S9300&S9300E Terabit Routing Switch
Configuration Guide - IP Service
3.4.6 CC
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.
By default, the period in which the S9300&S9300E waits for the response is 500 ms.
----End
3.4.7 CC
You can configure the S9300&S9300E to save DHCP data to the storage device. When a fault
occurs, you can restore data from the storage device.
Context
Perform the following steps on the DHCP server.
When the S9300&S9300E functions as the DHCP server, you can enable the function of saving
DHCP data so that IP address information is saved to the storage device periodically.
Procedure
Step 1 Run:
system-view
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 DHCP Configuration
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