WLAN AC V200R019C00 Command Reference
This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
ip relay address cycle
Function
The ip relay address cycle command enables the DHCP server polling function on a DHCP relay agent.
The undo ip relay address cycle command disables the DHCP server polling function on a DHCP relay agent.
By default, DHCP server polling is disabled on a DHCP relay agent.
Usage Guidelines
Usage Scenario
This command applies to DHCP relay agents. When multiple DHCP server addresses are configured on a DHCP relay agent, the DHCP relay agent forwards DHCP Discover messages to all servers by default. As a result, DHCP servers need to process a large number of messages, leading to heavy loads of servers. To solve this problem, configure the ip relay address cycle command. After this command is configured, the DHCP relay agent forwards a received DHCP Discover message to one DHCP server at a time, and forwards the DHCP Discover message to a different DHCP server each time it receives the message. Multiple DHCP servers then can allocate the same number of IP addresses, implementing load balancing among DHCP servers.
Prerequisites
DHCP has been enabled globally using the dhcp enable command.