Orion A10E - Configuring Global DHCP Relay; Configuring Interface DHCP Relay; Default Configurations of DHCP Relay; Preparing for Configurations

Orion Networks
A10E/A28E/A28F Configuration Guide
3 IP services
Orion Networks
87
3.5.2 Preparing for configurations
Scenario
When DHCP Client and DHCP Server are not in the same network segment, you can use
DHCP Relay function to make DHCP Client and DHCP Server in different network segments
carry relay service, and relay DHCP protocol packets across network segment to destination
DHCP server, so that DHCP Client in different network segments can share the same DHCP
Server.
Prerequisite
DHCP Relay is exclusive to DHCP Client, or DHCP Snooping. Namely, you cannot configure
DHCP Relay on the device configured with DHCP Client, or DHCP Snooping.
3.5.3 Default configurations of DHCP Relay
Function
Default value
Global DHCP Relay
Disable
Interface DHCP Relay
Enable
DHCP Relay supporting Option 82
Disable
Policy for DHCP Relay to process Option 82 request
packets
Replace
Interface DHCP Relay trust
No trust
3.5.4 Configuring global DHCP Relay
Step
Configuration
Description
1
Alpha-A28E#config
Enter global configuration mode.
2
Alpha-A28E(config)#ip dhcp
relay
Enable global DHCP Relay.
3.5.5 Configuring interface DHCP Relay
Step
Configuration
Description
1
Alpha-A28E#config
Enter global configuration mode.
2
Alpha-A28E(config)#interface ip
if-number
Enter Layer 3 interface configuration
mode.
3
Alpha-A28E(config-ip)#ip dhcp
relay
Enable DHCP Relay on the IP
interface.