Configuration Tasks

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

From Global Configuration mode, specify the physical interface on which you want to configure PPP.host1(config)#interface serial 3/0:2/5
Specify PPP as the encapsulation method (data-link protocol) on the interface.host1(config-if)#encapsulation ppp
Assign an IP address and subnet mask for the interface.host1(config-if)#ip address 192.168.22.10 255.255.255.0
Verify that your configuration changes are correct.host1#show ppp interface serial 3/0:2/5 config

encapsulation ppp

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 Configuring ATM .
Exampleshost1(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.
See interface atm.

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 chapter Configuring Unchannelized OCx/STMx Interfaces in JUNOSe Physical Layer Configuration Guide.
Exampleshost1(config-if)#interface pos 0/1 host1(config-if)#interface pos 5/0/0
Use the no version to remove the POS interface.
See interface pos.

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.
Examplehost1(config)#interface serial 3/0:2/5
Use the no version to disable or remove the subinterface or the logical interface.
See interface serial.

ip address