CLI Reference Guide-R04

Chapter 30 | DHCP Commands
DHCP Relay Option 82
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◆ If the rapid commit option has been enabled on the switch with this command,
and on the DHCPv6 server, message exchange can be reduced from the normal
four step process to a two-step exchange of only solicit and reply messages.
Example
Console(config)#ipv6 dhcp client rapid-commit vlan 2
Console(config)#
DHCP Relay Option 82
This section describes commands used to configure the switch to relay DHCP
requests from local hosts to a remote DHCP server.
ip dhcp l2 relay This command enables DHCP L2 relay service and DHCP Option 82.
Syntax
ip dhcp l2 relay
Default Setting
Disabled
Example
Console(config)#ip dhcp l2 relay
Console(config)#
ip dhcp l3 relay This command enables DHCP L3 relay service.
Syntax
ip dhcp 3 relay
Table 171: DHCP Relay Option 82 Commands
Command Function Mode
ip dhcp l2 relay Enables DHCP L2 relay service and DHCP Option 82 GC
ip dhcp l3 relay Enables DHCP L3 relay GC
ip dhcp relay server Specifies DHCP server or relay server addresses GC
ip dhcp relay information
option
Enables DHCP Option 82 information relay, and specifies
the frame format for the remote-id
GC
ip dhcp relay information
policy
Specifies how to handle DHCP client requests which
already contain Option 82 information
GC
show ip dhcp relay Displays the configuration settings for DHCP relay service PE