Configuring Cisco Router Point to Point Multilink

Point-to-Point Protocol

The Point-to-Point Protocol is the protocol that is an encapsulation protocol that allows the transferring of network layer traffic over point-to-point links. So we have the examples of point-to-point links that are ISDN and Synchronous serial links. PPP is the protocol that is also described in RFC1661. PPP Multilink that is used to take multiple PPP links and 'bond' them together, making them act as a single PPP link. It is very important to understand that PPP Multilink requires both ends to be configured the same, which is means that both you and your Internet service provider must have PPP Multilink configured otherwise the link will not work.

Fig 1: Configuring Cisco Router Point to Point Multilink

Configuring Cisco Router Point to Point Multilink

Networkeducative-Router(config)# interface Multilink1

Networkeducative-Router(config-if)# description Service Provider - 4096Mbit

Networkeducative-Router(config-if)# ip address 213.229.63.20 255.255.255.252

Networkeducative-Router(config-if)# ip nat outside

Networkeducative-Router(config-if)# ip inspect monitor out

Networkeducative-Router(config-if)# ip virtual-reassembly

Networkeducative-Router(config-if)# ppp multilink

Networkeducative-Router(config-if)# ppp multilink group 1

Networkeducative-Router(config-if)# no cdp enable

 

 

Networkeducative-Router(config)# interface Serial0/0/0

Networkeducative-Router(config-if)# description PPP-Multilink-1

Networkeducative-Router(config-if)# bandwidth 2048

Networkeducative-Router(config-if)# no ip address

Networkeducative-Router(config-if)# no ip proxy-arp

Networkeducative-Router(config-if)# encapsulation ppp

Networkeducative-Router(config-if)# ppp multilink

Networkeducative-Router(config-if)# ppp multilink group 1

Networkeducative-Router(config-if)# no fair-queue

Networkeducative-Router(config-if)# no clock rate 2000000

Networkeducative-Router (config-if)# no cdp enable

 

Networkeducative-Router(config)# interface Serial0/0/1

Networkeducative-Router(config-if)# description PPP-Multilink-2

Networkeducative-Router(config-if)# bandwidth 2048

Networkeducative-Router(config-if)# no ip address

Networkeducative-Router(config-if)# no ip proxy-arp

Networkeducative-Router(config-if)# encapsulation ppp

Networkeducative-Router(config-if)# ppp multilink

Networkeducative-Router(config-if)# ppp multilink group 1

Networkeducative-Router(config-if)# no fair-queue

Networkeducative-Router(config-if)# no clock rate 2000000

Networkeducative-Router(config-if)# no cdp enable