ADD PPP Command in PPP Configuration

PPP (Point-to-Point Protocol) is a widely used protocol for establishing a direct connection between two nodes in a network. In PPP configuration, the ADD PPP command is used to configure and add a new PPP interface to the router.

Syntax

The syntax of the ADD PPP command is as follows:

ROUTER(config)# interface ppp number
ROUTER(config-if)# ip address ip-address subnet-mask
ROUTER(config-if)# ppp pap hostname username password password
ROUTER(config-if)# ppp multilink

Where:

• number is the number of the PPP interface.
• ip-address is the IP address of the interface.
• subnet-mask is the subnet mask of the network.
• hostname is the hostname of the PPP authentication server.
• username is the username for PPP authentication.
• password is the password for PPP authentication.
• multilink enables multilink PPP on the interface.

Description

The ADD PPP command is used to create a new PPP interface on the router. The interface is identified by a number, which is used to reference the interface in other configuration commands. Once the interface is created, it can be configured with an IP address, subnet mask, and authentication settings.

The ip address and subnet mask parameters are used to configure the IP address and subnet mask for the interface. This is necessary for the interface to communicate with other nodes on the network.

The ppp pap command is used to configure PAP (Password Authentication Protocol) authentication for the PPP interface. PAP is a simple authentication protocol that uses a username and password to authenticate a PPP connection.

The hostname parameter is used to specify the hostname of the PPP authentication server. This is required for PAP authentication to function properly.

The username and password parameters are used to specify the login credentials for PAP authentication. The password parameter should be encrypted using a strong encryption algorithm for security reasons.

The ppp multilink command is used to enable multilink PPP on the interface. Multilink PPP is a technique that combines multiple physical links to create a faster, more reliable connection.

Example

Here is an example of how to configure a new PPP interface using the ADD PPP command:

ROUTER(config)# interface ppp 1
ROUTER(config-if)# ip address 192.168.1.1 255.255.255.0
ROUTER(config-if)# ppp pap hostname my-auth-server
ROUTER(config-if)# ppp pap password my-password
ROUTER(config-if)# ppp multilink

This command creates a new PPP interface with the number "1". It configures the IP address of the interface to be "192.168.1.1" with a subnet mask of "255.255.255.0". PAP authentication is enabled on the interface with the hostname "my-auth-server" and the password "my-password". Finally, multilink PPP is enabled on the interface.