Configuring The Dhcp Server - Huawei Quidway S3700 Series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Device Management
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1.3.2 Configuring the DHCP Server

Context
The configuration procedure varies according to the device type of the DHCP server. Therefore,
the configuration procedure is not described and only the configuration contents are provided.
Procedure
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Issue 01 (2011-07-15)
Data
Interconnection information about the upstream interfaces on each S3700 and the
downstream interfaces on the DHCP server
MAC address of each unconfigured switch
IP address, mask, address pool, and Option 150 or Option 14x of the DHCP server
IP address, version file, patch file, and configuration file on the FTP/TFTP server
NOTE
The DHCP server must support either Option 150 or Option 14x.
Enable DHCP server.
Configure an address pool, including the address range and Option 150 (or Option 14x).
It is required that the address pool be on the same network segment with unconfigured
switches and the FTP/TFTP server.
NOTE
Pay attention to the following points when configuring Option 150 or Option 14x:
l When new switches obtain configuration files through TFTP, the DHCP server must support
Option 150.
l When new switches obtain configuration files through FTP, the DHCP server must support
Option 141, Option 142, and Option 143.
l If both Option 150 and Option 14x are configured on the DHCP server, Option 150 takes
precedence over Option 14x.
l If you use ordinary characters to configure Option 150 or Option 143 on the DHCP server, the
Auto-Config module cannot recognize the IP address, which results in an Auto-Config process
sends the DHCP messages incessantly.
Add the downstream interface on the DHCP server to the management VLAN in access
mode and assign an IP address on the same network segment as the IP address of the DHCP
server to the management VLAN.
After Auto-Config is enabled, packets from an unconfigured switch do not carry tags.
Therefore, ensure that untagged packets can be transmitted between unconfigured switches
and the DHCP server.
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