3Com 10014299 Configuring the mode of the physical interface, Configure Physical Interface Mode

710CHAPTER 51: CONFIGURING DCC

Configuring the mode of the physical interface

For a synchronous/asynchronous serial interface, configure the physical interface to operate in asynchronous and dial mode if it is connected to an asynchronous modem. If the physical interface is connected to a synchronous modem, configure the physical interface to operate in synchronous and dial mode. For an ISDN BRI or PRI interface, this step can be ignored.

Perform the following configuration in dial interface (synchronous/asynchronous serial interface) view.

Table 742 Configure Physical Interface Mode

Operation	Command
Configure a synchronous/asynchronous	physical-mode { async sync }
serial interface to work in asynchronous or
synchronous mode
Configure the asynchronous serial	modem [ in out auto-answer ]
interface to work in dial mode

By default, a synchronous/asynchronous serial interface works in synchronous mode and an asynchronous serial interface works in dial (modem) mode.

There is no need to configure the physical-modecommand for the synchronous serial interface connected to a synchronous modem. The user only needs to configure the modem command for an AUX interface.

Configuring link layer and network and routing protocols on the interface

Set the link layer protocol in dial interface (physical or dialer interface) view through the link-protocolcommand, configure an IP or IPX address for the dial interface through the ip address or ipx network command, and perform other configurations in system view.

Table 743 Configure Link Layer and Network and Routing Protocols on the Interface

Operation	Command
Set a link layer protocol on the dial	link-protocol
interface	linklayer-protocol-type
Configure an IP address for the dial	ip address ipaddress mask
interface
Activate IPX	ipx enable ipx-address
Configure an IPX address for the dial	ipx network network-number
interface
Configure IPX static route	ipx route network.node tick ticks hop
	hops [ preference value]
Configure RIP route protocol	rip
Configure OSPF route protocol	ospf [ enable ]
Configure BGP route protocol	bgp as-number

The linklayer-protocol-typecan be SLIP, PPP or Frame Relay. For configuration details, see the related section in Operation Manual - Link Layer Protocol, Operation Manual - Network Protocol and Operation Manual - Routing Protocol.

For a dialer interface adopting Resource-Shared DCC to implement Frame Relay over ISDN, the B channel is encapsulated with PPP originally. Once the B channel is ready for communication, the protocol encapsulated on the interface dynamically