M320 FPC Components

Each M320 FPC has the following components:

• FPC card carrier, which has the PIC slots
• One Packet Forwarding Engine consisting of Layer 2/Layer 3 Packet Processing ASICs, Switch Interface ASICs, Internet Processor ASICs, and a memory subsystem (MMB), which includes the Queuing and Memory Interface ASICs
• Midplane connectors and power circuitry
• Processor subsystem (PMB), which has a 288-MHz CPU, system controller, 256 megabytes (MB) of SDRAM, and two Fast Ethernet interfaces
• Two LEDs, which are on the craft interface above the FPC, that display the status of the FPC
• FPC offline button, which is on the craft interface above the FPC