Huawei Quidway S3900 Series User Manual

Operation Manual - DHCP
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 3 DHCP Relay Configuration
Huawei Technologies Proprietary
3-9
After the pseudo DHCP server detection function is enabled on a DHCP relay, when a
DHCP client sends the DHCP-REQUEST message, the DHCP relay can obtain the IP
address of the server that assigns an IP address to the client from the message and
records the assigned IP address as well as the information of the interface receiving
the message. As a result, the administrator can find and deal with the pseudo DHCP
server.
Table 3-7 Configure pseudo-DHCP server detection function
Operation Command Description
Enter system view
system-view
—
Enable pseudo-DHCP
server detection function
dhcp-server detect
Required
By default, the pseudo
DHCP server detection
function is disabled
3.2.5 Configuring Option 82 Supporting
I. Prerequisites
Before configuring option 82 supporting on a DHCP relay, you need to:
z Configure network parameters and relay function of the DHCP relay device.
z Perform assignment strategy-related configurations, such as network parameters
of the DHCP server, address pool, and lease time.
z The routes between the DHCP relay and the DHCP server are reachable.
II. Enabling option 82 supporting on a DHCP relay
The following operations need to be performed on a DHCP relay–enabled network
device.
Table 3-8 Enable option 82 supporting on a DHCP relay
Operation Command Description
Enter system view
system-view
—
Enable option 82
supporting on the
DHCP relay
dhcp relay
information
enable
Required
By default, this function is disabled

Huawei Quidway S3900 Series Specifications

General

Brand	Huawei
Model	Quidway S3900 Series
Category	Switch
Language	English