Specifications

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2.9.6 Cooling System
The M10/M5 cooling system circulates air side-to-side, using a single,
removable fan tray. In addition, the M10/M5 power supplies have their own
internal fans. The fan tray can be inserted or removed while the M10/M5 is
powered up, without adversely affecting the system. If a fan should fail, a fan
tray alarm will sound, indicating a need for service. The fan tray is a FRU
and should be replaced as soon as possible following a fan failure.
2.9.7 The M10/M5 Craft Interface
The craft interface is the collection of mechanisms on the M10/M5 router that
allow the user to view system status and troubleshoot the router. The craft
interface is located on the front panel display board. The craft interface
contains system LEDs, buttons, alarm indicators, as well as Fast Ethernet,
console and auxiliary ports for management access.
2.9.8 Field Replaceable Units
§ Chassis, midplane, and front panel
§ Forwarding Engine Board (FEB)
§ Routing Engine (RE)
§ Power Supply
§ Fan Tray
§ PICs
There is no FPC as a FRU on M10 or M5. Instead, FPC functionality is
included in the FEB.
2.9.9 Target Applications
2.9.9.1 Dedicated Access
Offering a compact form-factor, high-performance forwarding, and
performance-based enhanced packet processing services, the M10/M5
provides a powerful dedicated access solution for T1/E1 speeds and above.
With the Channelized OC12 PIC, the M10/M5 supports up to 96 DS3
channels in 5.25 inches of rack space. The M10/M5 also offers 4-port
versions of E1, T1, DS3, and E3 PICs, supporting up to 32 ports of each.
Additionally, the M10/M5 supports ATM access as OC3 and OC12 speeds.
The ASIC-based Circuit Cross-Connect (CCC) feature offers providers the
ability to map ATM or Frame Relay access circuits into MPLS LSPs to allow
providers to leverage their IP backbone for multiservice traffic. Lastly, the
M10/M5 offers OC3, OC12 and even OC48 SONET interfaces, providing a
powerful growth path for higher-speed access.
The M10/M5 route lookup engine, featuring the Internet Processor II ASIC, is
over-sized for the interfaces it supports, which means that there is plenty of
packet processing head-room for value-added services such as CoS, packet
filtering, and sampling. These features can be turned on without affecting
forwarding performance, enabling providers to turn on filters at network
ingress points, or sample traffic, or implement CoS packet processing
without taking a performance hit.
Additionally, all SONET interfaces supported by the M10/M5 (including
ChOC-12 to DS3) support dual router automatic protection switching (APS)
to protect against a failure of the router port, ADM port, fiber, or of the whole
router.
JUNOS software provides the scalability, reliability and software feature set
to meet the control needs of high-speed access. The M10/M5's small size,
and efficient use of power, combined with the Internet Processor II's ASIC
forwarding performance and packet processing performance provide an
attractive solution for aggregating large numbers of dedicated access links
while offering value-added services.