- Juniper Router Hardware Guide
Power Supplies ........................................................................................ 16
AC Power Supply................................................................................. 17
DC Power Supply ................................................................................ 18
Power Supply LEDs and Self-test Button........................................................ 19
Fan Tray ............................................................................................... 19
Cable Management System ........ .. ................. ........ ................... ........ ............ 20
Chapter 3
JUNOS Internet Software Overview.................................................................... 21
Routing Engine Software Components .............................................................. 21
Routing Protocol Process ........................................................................ 22
IPv4 Routing Protocols ..................................................................... 22
IPv6 Routing Protocols ..................................................................... 24
Routing and Forwarding Tables ............................................................ 24
Routing Policy............................................................................... 25
VPNs.............................................................................................. 26
Interface Process................................................................................. 26
Chassis Process .................................................................................. 26
SNMP and MIB II Processes ..................................................................... 26
Management Process....... ................... ........... ................... ........... ......... 27
Routing Engine Kernel........................................................................... 27
Tools for Accessing and Configuring the Software................................................... 27
Tools for Monitoring the Software.................................................................... 27
Software Upgrades.................................................................................... 28
Chapter 4
System Architecture Overview ........................................................................... 29
Packet Forwarding E
ngine Architecture.............................................................. 29
Data Flow through the Packet Forwarding Engine ............................................. 30
RoutingEngineArch
itecture.......................................................................... 31
Routing Engine Functions ....................................................................... 32
Part 2
Initial Installation
Chapter 5
Prepare for Router Installation ........................................................................... 37
Rack Requirements
................................................................................... 37
Rack Size and Strength .......................................................................... 37
Spacing of Mounting
Holes...................................................................... 39
Connection to Building Structure ............................................................... 39
Clearance Requirem
ents for Airflow and Hardware Maintenance.................................. 40
Router Environmental Tolerances.................................................................... 40
Fire Safety Requirem
ents............................................................................. 41
Fire Suppression ................................................................................. 41
Fire Suppression Equ
ipment .................................................................... 41
iv M5 and M10 Internet Routers Hardware Guide