Users Guide

Table Of Contents
Example
OS10(conf-if-eth1/1/1)# ip dhcp-relay source-interface
ethernet Ethernet interface type
loopback Loopback interface type
port-channel Port-channel interface type
vlan VLAN interface type
virtual-network Virtual network type
OS10(conf-if-eth1/1/1)# ip dhcp-relay source-interface loopback 1
Supported
Releases
10.5.2 or later
ip dhcp-relay server-override
Enables server identifier override (suboption-11) globally on the relay agent.
Syntax
ip dhcp-relay server-override
Parameters None.
Defaults If server-override is enabled globally, DHCPv4 relay server identifier override option (suboption-11) is
enabled on an interface by default.
Command Mode INTERFACE CONFIGURATION
Usage
Information
Disable the server identifier override (suboption-11) on the interface using the no ip dhcp-relay
server-override command.
If you enable server-override-enable Globally, DHCPv4 relay server identifier override option
(suboption-11) is enabled on an interface by default. To avoid sending this option on selected
client, you must explicitly disable the option on the interface using the no ip dhcp-relay server-
override command.
NOTE: The ip dhcp-relay server-override configuration is disabled globally by default.
With server override enabled, the DHCP relay drops further packets from the DHCP client if there is
a change in the anycast gateway IP address. This behavior forces the client to restart the discovery
process.
Table 49. Values
Global Level Interface Level Server-override value
Enabled Enabled (By default) Enabled. value: anycast
gatewayIP
Disabled Enabled Disabled
Enabled Disabled Disabled on interface
This command is restricted to netadmin and sysadmin role users.
Example
Globally enable Server-override:
OS10(conf)# ip dhcp-relay server-override
Disable server-override on interface
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)#no ip dhcp-relay server-override
System management 305