Specifications
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2.10.2  M40 Specifications 
Component  Specifications 
M40 System 
Architecture 
•  40 million packets per second forwarding rate 
•  Clean separation of routing and forwarding functions  
•  40-Gbps ASIC-based Packet Forwarding Engine 
•  Separate, dedicated, Intel-based Routing Engine 
running JUNOS Internet Software 
•  8 Flexible PIC Concentrator (FPC) slots; hot 
swappable  
•  32 slots available for Physical Interface Cards 
(PICs)  
•  Dual, redundant, hot-swappable power supplies (AC 
or DC)  
•  Hot-swappable cooling fans and impellers  
•  Industry-leading port density per rack inch: 128 
DS3s, 128 E3s, 128 FEs, 128 OC3s, 32 OC12s, 32 
Gigabit Ethernets, 8 OC48s per 14 inch high 
chassis  
•  Industry-leading interface flexibility space 
requirements and capital investment. 
Packet 
Forwarding 
Engine (PFE)  
•  40-Gbps, ASIC-based switching engine containing:  
•  Internet Processor ASIC: 40 Mpps lookup rate for 
true wire-rate performance  
•  Distributed Buffer Manager ASIC for coordinating 
pooled, single-stage buffering  
•  I/O Manager ASIC for wire-rate parsing, prioritizing, 
and queuing of packets 
Routing Engine 
(RE) with 
JUNOS Internet 
Software 
•  BGP4, with confederations, route reflectors, 
communities, route flap damping, TCP MD5 
authentication  
•  OSPFv1/v2, IS-IS, RIPv2 interior gateway protocols  
•  Flexible policy software for filtering and modifying 
route advertisements  
•  MPLS with RSVP and LDP for traffic engineering  
•  DVMRP, PIM-SM, PIM-DM, IGMP and MSDP for IP 
multicast 
•  Configuration management features for enhanced 
usability  
•  Secure remote access with SSH, TACACS+ and 
RADIUS 
Routing Engine 
Hardware 
•  233-MHz Intel Pentium Processor 
•  256 / 512 MB SDRAM 
•  80-MB Flash disk storage  
•  LS-120 drive and 6.4 GB hard disk drive for 
secondary storage  
•  10/100 Ethernet port for out-of-band management  
•  2 asynchronous serial ports (RS-232) for console 
and remote management 
Physical 
Dimensions 
•  Size: 35" (H), 19" (W), 23.5" (D)  
•  Weight: 250 lbs – 113.6 kg (fully-loaded system)  
•  Rack-mount options: front or center mount 
Power 
Requirements: 
DC 
•  Maximum DC power: 1680 watts  
•  Maximum current: 35A at -48V  
•  DC input voltage: -38 to -75 VDC operating range 
Power 
Requirements: 
AC 
•  Maximum AC power: 1664 watts  
•  Maximum current: 8A at 208V  
•  AC input voltage: 80-264 VAC operating range 
Thermal Output  •  5676 BTU/hour 
Environment  •  Temperature range: 0 to 40 degrees C  
•  Maximum altitude: 10,000 feet  










