Service Dhcp; Dhcp Relay Configuration - Accton Technology ES4710BD User Manual

Function: Sets the network parameter specified by the option code; the "no option <code>"
command cancels the setting for option.
Parameters: <code> is the code for network parameters; <string> is the ASCII string up to 255
characters; <hex> is a value in Hex that is no greater than 510 and must be of even length;
<ipaddress> is the IP address in decimal format, up to 63 IP addresses can be configured.
Command Mode: DHCP Address Pool Mode
Usage Guide: The switch provides common commands for network parameter configuration as well
as various commands useful in network configuration to meet different user needs.
The definition of option code is described in detail in RFC2123.
Example: Setting the WWW server address as 10.1.128.240.
Switch(dhcp-1-config)#option 72 ip 10.1.128.240

14.2.2.19 service dhcp

Command: service dhcp
no service dhcp
Function: Enables DHCP server; the "no service dhcp" command disables the DHCP service.
Default: DHCP service is disabled by default.
Command mode: Global Mode
Usage Guide: Both DHCP server and DHCP relay are included in the DHCP service. When DHCP
services are enabled, both DHCP server and DHCP relay are enabled. ES4710BD
can only assign IP address for the DHCP clients and enable DHCP relay when
DHCP server function is enabled.
Example: Enabling DHCP server.
Switch(Config)#service dhcp

14.3 DHCP Relay Configuration

When the DHCP client and server are in different segments, DHCP relay is required to transfer
DHCP packets. Adding a DHCP relay makes it unnecessary to configure a DHCP server for each
segment, one DHCP server can provide the network configuration parameter for clients from
multiple segments, which is not only cost-effective but also management-effective.
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