To enable manually configured routing on an asynchronous interface, use theÂ async dynamic routing command in interface configuration mode. To disable routing protocols, use theÂ no form of this command; static routing is still used.
async dynamic routing
noÂ async dynamic routing
This command has no arguments or keywords.
|10.0||This command was introduced.|
TheÂ async dynamic routing command is commonly used to manually bring up PPP from an EXEC session.
The following example shows how to enable manually configured routing on asynchronous interfaceÂ 1. The ip tcp header-compression passivecommand enables Van Jacobson TCP header compression and prevents transmission of compressed packets until a compressed packet arrives from the asynchronous link.
interface async 1
Â async dynamic routing
Â async dynamic address
Â async default ip address 10.1.1.2
Â ip tcp header-compression passive
A remote user who establishes a PPP or SLIP connection to this asynchronous interface can enable routing by using the /routing switch or theppp/routing command. However, if you want to establish routing by default on connections to an asynchronous interface, use theÂ async default routingcommand when you configure the interface.
|async default routing||Enables the router to pass routing updates to other routers over the AUX port configured as an asynchronous interface.|
|async dynamic address||Specifies dynamic asynchronous addressing versus default addressing.|
|ip tcp header-compression||Enables TCP header compression.|