466 IP Addressing Commands
Default Configuration
No default gateway is defined.
Command Mode
Global Configuration mode
User Guidelines
When the system does not have a more specific route to a packet’s
destination, it sends the packet to the default gateway. The system installs a
default IPv4 route with the gateway address as the next hop address. The
route preference is 253. A default gateway configured with this command is
more preferred than a default gateway learned from a DHCP server, which has
a route preference of 254. It is less preferred than a static route configured via
the ip route command, which has a route preference of 1. Use the show ip
route command to display the active default gateway.
Only one default gateway can be configured. If you invoke this command
multiple times, each command replaces the previous value.
Example
The following example sets the default-gateway to 10.1.1.1.
console#config
console(config)#ip default-gateway 10.1.1.1.
ip domain-lookup
Use the ip domain-lookup command in Global Configuration mode to
enable IP Domain Naming System (DNS)-based host name-to-address
translation. To disable the DNS, use the no form of this command.
Syntax
ip domain-lookup
no ip domain-lookup
Default Configuration
DNS name resolution is enabled by default.
2CSPC4.XModular-SWUM200.book Page 466 Thursday, March 10, 2011 11:18 AM
