M40 Router Components; Table 7: M40 Router Major Hardware Components - Juniper M Series Monitoring And Troubleshooting Manual

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M40 Router Components

Table 7: M40 Router Major Hardware Components

Component
Cooling system
Craft interface
FPC
PIC
Power supply
Routing Engine
SCB
14
The M40 router Internet processor II ASIC forwards packets at a throughput rate of up
to 40 Gigabits per second (Gbps). The ASIC technology provides such packet processing
as route lookups, filtering, sampling, rate limiting, load balancing, buffer management,
switching, and encapsulation and de-encapsulation of IP services. The M40 router delivers
the bandwidth required to grow networks to OC48c/STM16 speeds in a cost-effective
manner.
M40 Router Components on page 14
Table 7 on page 14 lists the major M40 router components and characteristics.
Quantity Function
2 impeller Cools router components
trays and
1 fan
assembly
(3 fans)
1 Displays the status and allows you to
perform control functions
1–8 Connects PICs to other components and
houses shared memory
1–4 per Provides interfaces to various network
FPC media
2 AC or 2 Distributes voltages to components
DC
1 Handles routing protocols and maintains
routing tables
1 Performs router lookups, monitors
systems, and transfers control packets
Field-replaceable units (FRUs) are router components that can be replaced at the
customer site. Replacing FRUs requires minimal router downtime. There are three types
of FRUs:
Hot-removable and hot-insertable—You can remove and replace the component
without powering down the router or interrupting the routing functions.
Hot-pluggable—You can remove the component without powering down the router,
but routing functions are interrupted until the replacement is installed.
Field-
Redundant Replaceable
Yes Hot-removable,
hot-insertable
– Hot-removable,
hot-insertable
– Hot-removable,
hot-insertable
– Hot-removable,
hot-insertable
Yes Hot-removable,
hot-insertable
– Hot-pluggable
– Hot-pluggable
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