Huawei Quidway S3900 Series User Manual

Operation Manual - DHCP
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 2 DHCP Server Configuration
Huawei Technologies Proprietary
2-16
2.3.3 Configuring to Assign the IP Addresses of Interface Address Pools to
DHCP Clients
If the DHCP server works in the interface address pool mode, it picks IP addresses
from the interface address pools and assigns them to the DHCP clients. If there is no
available IP address in the interface address pools, the DHCP server picks IP
addresses from its global address pool that contains the interface address pool
segment and assigns them to the DHCP clients.
Table 2-13 Configure to assign the IP addresses of interface address pools to DHCP
clients
Operation Command Description
Enter system view
system-view
—
interface interface-type
interface-number
dhcp select interface
Configure
the current
interface
quit
Configure to
assign the IP
addresses of
interface
address pools
to DHCP clients
Configure
multiple
interfaces in
system view
dhcp select interface
{ interface interface-type
interface-number [ to
interface-type
interface-number ] | all }
Required
By default, a DHCP
server assigns the
IP addresses of the
global address pool
to DHCP clients
 Note:
To prevent malicious attacks to unused sockets and enhance security, S3900 series
Ethernet switches provide the following functions:
z When DHCP is enabled, sockets UDP 67 and UDP 68 used by DHCP are enabled.
z When DHCP is disabled, sockets UDP 67 and UDP 68 are disabled at the same
time.
The preceding functions are implemented as follows:
z After you configure a DHCP interface address pool by using the dhcp select
interface command, sockets UDP 67 and UDP 68 will be enabled.
z After you delete the DHCP interface address pool by using the undo dhcp select
interface command and disable all the DHCP functions, sockets UDP 67 and UDP
68 will be disabled.

Huawei Quidway S3900 Series Specifications

General

Brand	Huawei
Model	Quidway S3900 Series
Category	Switch
Language	English