M40E Routing Engine Software Components; Routing Protocol Process; Ipv4 Routing Protocols - Juniper M40E Hardware Manual

M40e Multiservice Edge Router Hardware Guide

M40e Routing Engine Software Components

Routing Protocol Process

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The Routing Engine software consists of several software processes that control router
functions and a kernel that coordinates communication among the processes, as
described in:
Routing Protocol Process on page 52
VPNs on page 56
Interface Process on page 56
Chassis Process on page 57
SNMP and MIB II Processes on page 57
Management Process on page 57
Routing Engine Kernel on page 57
The Junos OS routing protocol process controls the routing protocols that run on the
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 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.
This section discusses:
IPv4 Routing Protocols on page 52
IPv6 Routing Protocols on page 54
Routing and Forwarding Tables on page 54
Routing Policy on page 55
For complete information about routing concepts, see the Junos OS configuration guides.

IPv4 Routing Protocols

The Junos OS implements full IP routing functionality, providing support for IP version 4
(IPv4). The routing protocols are fully interoperable with existing IP routing protocols
and provide the scale and control necessary for the Internet core. The software provides
support for the following routing and traffic engineering protocols:
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