JUNOSe 9.1.x Link Layer Configuration Guide > Configuring Point-to-Point Protocol > Configuration Tasks

Configuration Tasks

The following procedure is an example of a PPP configuration on a serial interface. These steps are mandatory unless otherwise noted.

1. From Global Configuration mode, specify the physical interface on which you want to configure PPP.

host1(config)#interface serial 3/0:2/5

2. Specify PPP as the encapsulation method (data-link protocol) on the interface.

host1(config-if)#encapsulation ppp

3. Assign an IP address and subnet mask for the interface.

host1(config-if)#ip address 192.168.22.10 255.255.255.0

4. Verify that your configuration changes are correct.

host1#show ppp interface serial 3/0:2/5 config

encapsulation ppp

• Use to configure PPP as the encapsulation method.
• Example

host1(config-if)#encapsulation ppp

• Use the no version to disable PPP on an interface.

interface atm

• Use to specify a previously configured ATM interface on which you want to configure PPP.
• To specify an ATM interface for ERX-7xx models, ERX-14xx models, and ERX-310 routers, use the slot/port.[subinterface ] format.

• slot—Number of the chassis slot
• port—Port number on the I/O module
• subinterface—Number of the subinterface in the range 1–2147483647

• To specify an ATM interface for E120 and E320 routers, use the slot/adapter/port[.subinterface ] format.

• slot—Number of the chassis slot
• adapter—Identifier for the IOA within the E320 chassis, either 0 or 1, where:

• 0 indicates that the IOA is installed in the right IOA bay (E120 router) or the upper IOA bay (E320 router).
• 1 indicates that the IOA is installed in the left IOA bay (E120 router) or the lower IOA bay (E320 router).

• port—Port number on the IOA
• subinterface—Number of the subinterface in the range 1–2147483647

• For more information, see Creating a Basic Configuration in Chapter 1, Configuring ATM.
• Examples

host1(config-if)#interface atm 9/1.1

host1(config-if)#interface atm 5/0/1.1 

• Use the no version to disable or remove the subinterface or the logical interface.

interface pos

• Use to specify a previously configured packet over SONET (POS) interface on which you want to configure PPP.
• To specify a POS interface for ERX-7xx models, ERX-14xx models, and ERX-310 routers, use the slot/port.[subinterface ] format.

• slot—Number of the chassis slot
• port—Port number on the I/O module
• subinterface—Number of the subinterface

• To specify a POS interface for E120 and E320 routers, use the slot/adapter/port format.

• slot—Number of the chassis slot
• adapter—Identifier for the IOA within the E320 chassis, either 0 or 1, where:

• 0 indicates that the IOA is installed in the right IOA bay (E120 router) or the upper IOA bay (E320 router).
• 1 indicates that the IOA is installed in the left IOA bay (E120 router) or the lower IOA bay (E320 router).

• port—Port number on the IOA

• For more information about modules that support POS interfaces, see JUNOSe Physical Layer Configuration Guide, Chapter 3, Configuring Unchannelized OCx/STMx Interfaces.
• Examples

host1(config-if)#interface pos 0/1

host1(config-if)#interface pos 5/0/0

• Use the no version to remove the POS interface.

interface serial

• Use to specify a serial interface in the slot/port:channel/subchannel format by selecting a previously configured physical interface on which you want to configure PPP.

• slot—Refers to a router chassis slot.
• port—Refers to a CT3, T3, or E3 module I/O port.
• channel—Refers to a T1 (DS1) channel.
• subchannel—Represents a set of DS0 subchannels.

• Example

host1(config)#interface serial 3/0:2/5

• Use the no version to disable or remove the subinterface or the logical interface.

ip address

• Use to assign an IP address and subnet mask for a PPP interface.
• Example

host1(config-if)#ip address 192.168.22.10 255.255.255.0

• Use the no version to remove an IP address or disable IP processing.