Configure Dhcp Relay; Configure Ip Address Of A Dhcp Server - Huawei Quidway S3500 Series Operation Manual

Operation Manual - Network Protocol
Quidway S3500 Series Ethernet Switches
DHCP Relay work on this principle:
In the startup and DHCP initialization, DHCP Client advertises configuration
request messages to the local network.
If there is a DHCP Server in the local network, you can initiate DHCP configuration
directly, with DHCP Relay unnecessary.
Otherwise, when a device with DHCP Relay enabled which is connected with the
local network receives the messages, it will make necessary processing and
forward them to the designated DHCP Server on other network.
DHCP Server makes configurations according to the information from DHCP
Client and sends the configuration result via DHCP Relay back to DHCP Client.
In practice, several times of interaction behaviors may be required in the dynamic
configuration of DHCP Client.

4.2 Configure DHCP Relay

DHCP relay configuration includes:

Configure IP Address of a DHCP Server

Configure Corresponding DHCP Server Group of the VLAN Interface
Configure the Address Table Entry
Enable/Disable DHCP security features
Enable/Disable DHCP pseudo-server detection
4.2.1 Configure IP Address of a DHCP Server
Perform the following configuration in System view.
Table 4-1 Configure/Delete the IP address of the DHCP Server
Configure the IP address of the DHCP
Server
Remove all the IP addresses of the
DHCP Server (namely, set the IP
addresses of the primary and secondary
DHCP Servers to 0)
Note that the backup DHCP Server IP address cannot be configured independently,
instead, it has to be configured together with the master DHCP Server IP address.
By default, the corresponding IP address of the DHCP Server is not configured. That is,
The DHCP Server address must be configured before DHCP relay can be used.
Operation
Huawei Technologies Proprietary
4-2
Chapter 4 DHCP Relay Configuration
Command
dhcp-server groupNo ip ipaddress1
[ ipaddress2 ]
undo dhcp-server groupNo