Routing Engine Software Components; Routing Engine Software; Routing Protocol Process - Juniper TX MATRIX Hardware Manual

Routing Engine Software Components

Routing Engine Software

Routing Protocol Process

Copyright © 2010, Juniper Networks, Inc.
The Junos OS runs on all Routing Engines in the routing matrix. The software consists of
processes that support Internet routing protocols, control the routing matrix's interfaces
and chassis, and provide an interface for system management. The processes run on top
of a kernel that coordinates the communication among processes and has a direct link
to the Packet Forwarding Engine software.
Routing Engine Software on page 149
Routing Protocol Process on page 149
VPNs on page 153
Interface Process on page 153
Chassis Process on page 153
SNMP and MIB II Processes on page 153
Management Process on page 153
Kernel Synchronization Process on page 154
Routing Engine Kernel on page 154
The Routing Engine in the TX Matrix router maintains the routing tables used by the
routing matrix and controls the routing protocols that run on the routing matrix. The TX
Matrix router provides all routing tables, along with updates, to each T640 router in the
routing matrix.
Each Routing Engine consists of a CPU running Junos OS.
CAUTION: We recommend that you run the same Junos OS release on the
master and backup Routing Engines. If you choose to run different Junos OS
releases on the Routing Engines, a change in Routing Engine mastership can
cause one or all T640 routers to be logically disconnected from the TX Matrix
router.
The Junos OS routing protocol process controls the routing protocols that run on the
TX Matrix router. The routing protocol process starts all configured routing protocols and
handles all routing messages. It consolidates the routing information learned from all
routing protocols into common routing tables. From this routing information, the routing
protocol process determines the active routes to network destinations and installs these
routes into the TX Matrix Routing Engine's forwarding table. Finally, the routing protocol
process implements the routing policies you specify, which determine how routing
information is transferred between the routing protocols and the routing table.
IPv4 Routing Protocols on page 150
IPv6 Routing Protocols on page 150
Chapter 17: Configuring Junos OS
149