Interfaces Overview

Types of Interfaces

            Permanent Interfaces

The permanent interfaces on a Juniper Networks platform perform two vital roles:

• Management -- interface fxp0, does not provide forwarding capabilities for transit data packets
• Operation -- interface fxp1 connects the Routing Engine to the Packet Forwarding Engine. This communications link is how routing protocol packets reach the Routing Engine to update the  routing table. The forwarding table updates reach the Packet Forwarding Engine across this interface as well

         

Packet Forwarding Engine Components

The components of the Packet Forwarding Engine fall into two main subsets:
1) Embedded OS software operating the circuit boards themselves
2) ASICs actually participating in packet forwarding.

Command-Line Interface. Modes. Configurations/Candidates. Redundancy.

Operational Mode

user@Merlot>

               Editing Command Lines

user@Merlot> set cli terminal vt100

приводит терминальный сеанс к удобоваримому стандарту для редактирования и работы.

Route Engine, Packet Forwarding Engine and other basic concepts

The central design principle of the Juniper Networks platform centers on a separation of the control and forwarding planes within the router.