Chapter 29
| DHCP Commands
DHCP Relay
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request, it allocates a free IP address for the DHCP client from its defined scope for
the DHCP client’s subnet, and sends a DHCP response back to the DHCP relay agent
(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 00-00-E8-93-82-A0
Index: 1001, MTU: 1500
Address Mode is DHCP
IP Address: 10.1.0.254 Mask: 255.255.255.0
Proxy ARP is disabled
DHCP Client Vendor Class ID (text): ECS4620-28F
DHCP Inform is disabled
DHCP relay server: 0.0.0.0
Console#
Related Commands
ip dhcp relay server (888)
DHCP Relay for IPv6
ipv6 dhcp relay
destination
This command specifies the destination address or VLAN to which client messages
are forwarded for DHCP service. Use the no form to remove an entry.
Syntax
[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 - All configured VLANs.
vlan-id - ID of configured VLAN. (Range: 1-4094)
Default Setting
None
Command Mode
Interface Configuration (VLAN)
Usage Guidelines
â—† This command is used to configure DHCPv6 relay functions for host devices
attached to the switch. If DHCPv6 relay service is enabled, and this switch sees a
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