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M160 Internet Router Hardware Guide
Routing Protocol Process
The JUNOS software 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 the following topics:
For complete information about routing concepts, see the JUNOS
Internet software configuration guides.
IPv4 Routing Protocols
The JUNOS Internet software 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:
44
Routing Engine Software Components
VPNs on page 48
Interface Process on page 49
Chassis Process on page 49
SNMP and MIB II Processes on page 49
Management Process on page 49
Routing Engine Kernel on page 49
IPv4 Routing Protocols on page 44
IPv6 Routing Protocols on page 46
Routing and Forwarding Tables on page 47
Routing Policy on page 47
Unicast routing protocols
BGP—Border Gateway Protocol, version 4, is an Exterior Gateway Protocol
(EGP) that guarantees loop-free exchange of routing information between
routing domains (also called autonomous systems). BGP, in conjunction
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Troubleshooting
