3troubleshootingjunos

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Troubleshooting JUNOS Platforms

Three ReproductionTyp s of FPCs

The M320 associat s with FPC Type 1, Type 2, and Type 3. The different FPC types accommodate the use of xisting M Series PICs as well as the use of native T Series PICs. The M320 supports any combination of FPC1, FPC2, or FPC3 in a single chassis.

The M320 uses the same LMNR chipset as the T640 and T320 platform. for

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You can visually distinguish the three types of FPC by the different PICs installed in the FPC. PICs compatible with an FPC1 do not have an offline button on their faceplate. The offline buttons for FPC1 are on the FPC faceplate. PICs compatible with an FPC2 have an offline button on their faceplate. PICs compatible with an FPC3 have a plastic ejector handle at the top of their faceplate.

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Troubleshooting JUNOS Platforms

The T640ReproductionCore Rout Overview

Each half-rack T640 core router supports 32 10-Gbps ports or 128 OC48c (STM16) ports, and ach slot handl s 80 Gbps of aggregate throughput, fulfilling the need for current and future high-bandwidth services. Revolutionary matrix technology, which is

foran optical backplane extension, enables two-way connectivity: 640 Gbps of ont-panel throughput and an oversized 1280 Gbps of rear-panel throughput for

nonblocking, any-to-any connectivity to other T640 routers. These routers can

inte connect to form a single logical routing entity. As such, service providers can craft architectures that preserve all front-panel ports for revenue generation. When

c nnected using matrix technology, this future multichassis configuration eliminates intermediate layers and reduces complexity by requiring fewer hops. This scalable configuration increases equipment lifespan and further reduces capital expenditure costs.

The T640 is for the core of large service provider networks. It targets roles requiring a high density of 10 Gbps interfaces.

The T640 system is the first Juniper Networks product based on the T640 Series set of ASICs. The ASIC set allows for the building of a distributed system providing up to 320 Gbps of forwarding capacity in half of a 7 foot rack. Each slot in a T640 core router chassis can contain up to two T640 PFEs. Each PFE provides 20 Gbps of forwarding capacity. With eight FPC slots in the chassis, 320 Gbps of forwarding capacity per router are available.

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Troubleshooting JUNOS Platforms

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Switch Interface Board: The T640 switching architecture is based on SIBs. Each of the system’s five SIBs connects to each FPC in the router. Four SIBs are in use at any one time, with the fifth provided for redundancy.

Routing Engine: The T640 contains up to two identical REs. One RE is required for line card chassis (LCC) operation and is a standard component of the base chassis. The second is necessary f r redu da t configurations. Each RE operates in a protected memory env r me t that limits the effect of a software process failing.

secondReproductionPEM is c ssary for redundancy. Both PEMs are a standard part of the chassis. Th y are hot-swappable and load-sharing. A fully loaded

Control Board: Provides control and monitoring func ions f r he chassis. A CB associates with each RE to provide control redundan y. The active CB always associates with the active RE. One CB is ne essary for chassis operation and is a standard part of the LCC. The se ond is necessary for redundant system configurations where a se ond RE is present.

SONET Clock Generator: The T640 provi es SONET clocking through the SCGs. The SONET clocks generate on each SCG and distribute to all receiver modules along with a signal mux select, indicating which clock is active and, therefore, which cl ck is the master.

Power supplies: The T640 uses a distributed power entry mechanism to allow for modularity, lower cu ent, and easier hot-swapping. Each Power Entry Module (PEM) equi es two 65 amp DC feeds. One PEM is necessary for chassis o eration and runs the router indefinitely. The

T640 can draw up to 6,500 watts (68 A at -48 VDC per input; note that each PEM has two inputs).

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Troubleshooting JUNOS Platforms

The T320ReproductionCore Rout r

The T320 core rout is the industry’s most compact 10 Gbps routing platform, fitting three chassis to a rack. While fully leveraging the T Series architecture and leading-edge T Series ASICs, the T320 offers significant gains in form factor, power consumption, and bandwidth density. Designed for a breadth of applications, the

forT320 is ideal for multiservice transit, peering, metro Ethernet aggregation, data center agg egation, and carrier-of-carrier VPNs.

As an ent y point into the T Series routing family, the T320 delivers unprecedented levels of flexibility, dependability, performance, density, and scalability. Network service providers can start with dense OC3 (STM1) and then linearly scale IP services to dense 10 Gbps rates in a single T320 chassis. If further capacity is necessary, service providers can cost-effectively migrate to the T640 because PICs are portable between platforms with identical feature support. Key characteristics of the T320 include the following:

•320 Gbps throughput (640 Gbps aggregate throughput);

•385 Mbps forwarding with features enabled;

•Space efficient with three chassis per rack;

•Cost-efficient scalability with M40e, T320, and T640 interface portability;

•Low power consumption of 60 A at -48 V and 2,880 watts; and

•Rich, dependable IP services on any port to meet advanced service-level agreements.

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