- Download
Software
- Research a
Problem - Case Management
- Communities and Forums
- Contract & Product Management
- Technical Documentation Advanced Search
- Documentation Feedback Form
- Documentation Symbols Key
- End-of-Life Products
- Guidelines and Policies
- Security Resources
Juniper was the first North American IP routing vendor to achieve the prestigious TL 9000 certification by the Quality of Excellence for Suppliers of Telecommunications (QuEST) Forum in the router category, for design, development, provision and service and support.
What is J-Care?
It's the world-class service and support that you expect from a company that delivers the industry's best infrastructure and security products. With J-Care, you now have the confidence knowing that Juniper will do our part to keep you on top of the world!
- Downloads
- T640 FPC Description
T640 FPC Description
Up to eight Flexible PIC Concentrators (FPCs) install vertically in the front of the T640 Core Router (see Figure 1). The FPC slots are numbered left to right from FPC0 to FPC7. An FPC can be installed into any FPC slot on the router, regardless of which PICs it contains.
If a slot is not occupied by an FPC, an FPC blank panel must be installed to shield the empty slot and to allow cooling air to circulate properly through the router.
Each FPC contains one or two Packet Forwarding Engines. The Packet Forwarding Engines receive incoming packets from the PICs installed on the FPC and forward them through the switch planes to the appropriate destination port. Each FPC contains data memory that is managed by the Queuing and Memory Interface ASICs.
FPCs are hot-removable and hot-insertable, as described in T640 Router FRU Overview. When you install an FPC into a functioning router, the Routing Engine downloads the FPC software, the FPC runs its diagnostics, and the PICs housed on the FPC are enabled. Forwarding continues uninterrupted during this process. For FPC replacement instructions, see Replacing a T640 FPC.
Each FPC consists of the following components:
- FPC card carrier.
- One or two Packet Forwarding Engines, consisting of Layer 2/Layer 3 Packet Processing ASICs, Switch Interface ASICs, T-series Internet Processor ASICs, and a Memory Mezzanine Board (MMB) which includes the Queuing and Memory Interface ASICs. Each Type 1, Type 2, and Type 4 FPC has one Packet Forwarding Engine, and each Type 3 FPC has two Packet Forwarding Engines.
- Processor Mezzanine Board (PMB), which includes a 300-MHz CPU, system controller, 256 MB of SDRAM, and two Fast Ethernet interfaces.
- Two LEDs, located on the craft interface above the FPC, that display the status of the FPC. For more information about the FPC LEDs, see T640 Craft Interface FPC LEDs and Online/Offline Buttons.
- FPC online/offline button, located on the craft interface above the FPC.
Figure 1: FPC Installed in T640 Chassis
