CLI Reference Guide-R01

Chapter 29 | DHCP Commands
DHCP Relay
– 790 –
(i.e., this switch). This switch then broadcasts the DHCP response received from the
server to the client.
Example
In the following example, the device is reassigned the same address.
Console#ip dhcp restart relay
Console#show ip interface
VLAN 1 is Administrative Up - Link Up
Address is CC-37-AB-BC-4F-FA
Index: 1001, MTU: 1500
Address Mode is User specified
IP Address: 192.168.2.98 Mask: 255.255.255.0
Proxy ARP is disabled
DHCP Relay Server: 192.168.2.1
Console#
Related Commands
ip dhcp relay server (788)
DHCP Relay for IPv6
ipv6 dhcp relay
destination
This command specifies a DHCPv6 server or the VLAN to which client requests are
forwarded, and also enables DHCPv6 relay service on this interface. Use the no
form to disable this service.
Syntax
ipv6 dhcp relay destination {ipv6-address | multicast {all | vlan vlan-id}}
no ipv6 dhcp relay destination [ipv6-address | multicast {all |
vlan vlan-id}]
ipv6-address - A full IPv6 address including the network prefix and host
address bits. This address may designate another relay server or a DHCPv6
server.
multicast - All DHCP server multicast address (FF:05::1:3).
all - Specifies all local VLAN interfaces.
vlan-id - ID of configured VLAN. (Range: 1-4094)
Default Setting
None
Command Mode
Interface Configuration (VLAN)
Usage Guidelines
◆ You must specify the IPv6 address for at least one DHCPv6 server or another
relay agent, or the VLAN to which to multicast a relay message. Otherwise, the
switch’s DHCPv6 relay agent will not forward client requests. This command