Junos Basics

Routing engine = Control Plane

• OSPF
• BGP
• Telenet session

Daemons

• RPD

• Most important Protocol

• Routing Protocol Daemon

• Works with all routing protocols

• Inet.0

• Routing tables

• MG-D

• DCD

• ChassisD

• VRRPD/ SNMPD

Packet forwarding Engine = Forwarding Plane

• Traffic
• Line cards (forwarding tables)
• Switch fabric

Junos Software architecture

One daemon crashing in the Routing Engine will not crash other Daemons