To define a default gateway (router) when IP routing is disabled, use the ip default-gateway global configuration command. To disable this function, use the no form of this command.
ip default-gateway ip-address
no ip default-gateway ip-address
Syntax Description
ip-address IP address of the router. Default
Disabled
Command Mode
Global configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 10.0.
The Cisco IOS software sends any packets that need the assistance of a gateway to the address you specify. If another gateway has a better route to the requested host, the default gateway sends an ICMP redirect message back. The ICMP redirect message indicates which local router the Cisco IOS software should use.
Example
The following example defines the router on IP address 192.31.7.18 as the default router:
ip default-gateway 192.31.7.18