DHCP Relay for IPv4
Before configuring DHCP Relay, make sure DHCP server and client configurations are done.
Figure 24. DHCP Relay Configuration
.
DHCP Agent
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#configure terminal |
Enter configure mode. |
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(config)#feature dhcp |
Enable the feature dhcp. This is enabled by default. |
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(config)#ip dhcp relay |
By default this will be enabled. It starts the ip dhcp relay service. |
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(config)#ip dhcp relay address 10.10.10.2 |
The relay address configured should be server interface address connected to DUT machine. |
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(config)#interface xe1 |
Enter interface mode. |
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(config-if)#ip address 10.10.10.1/24 |
Configure ipv4 address on the interface xe1. |
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(config-if)#ip dhcp relay uplink |
Configure relay uplink on the device connecting the server. |
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(config-if)#exit |
Exit interface mode. |
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(config)#commit |
Commit the candidate configuration to the running configuration |
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(config)#interface xe2 |
Enter interface mode. |
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(config-if)#ip address 20.20.20.1/24 |
Configure ipv4 address on the interface xe2. |
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(config-if)#ip dhcp relay |
Relay should be configured on the interface connecting to the client. |
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(config-if)#exit |
Exit interface mode. |
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(config)#commit |
Commit the candidate configuration to the running configuration |
Validation Commands
#show running-config dhcp
ip dhcp relay address 10.10.10.2
interface xe2
ip dhcp relay
!
interface xe1
ip dhcp relay uplink
!
#show ip dhcp relay
DHCP relay service is Enabled.
VRF Name: default
Option 82: Disabled
DHCP Servers configured: 10.10.10.2
Interface Uplink/Downlink
--------- -------------
xe2 Downlink
xe1 Uplink
#show ip dhcp relay address
VRF Name: default
DHCP Servers configured: 10.10.10.2