IOC Components

Each IOC consists of the following components:

• IOC cover, which functions as a ground plane and a stiffener.
• Fabric interfaces.
• Two Gigabit Ethernet interfaces that allow control information, route information, and statistics to be sent between the Routing Engine and the CPU on the IOCs.
• Two interfaces from the SCBs that enable the boards to be powered on and controlled.
• Physical IOC connectors.
• Packet Forwarding Engines.
• Midplane connectors and power circuitry.
• Processor subsystem, which includes a 1.2-GHz CPU, system controller, and 1 GB of SDRAM.
• LEDs on the 4–port 10–Gigabit Ethernet faceplate indicate the port status. LEDs are labeled top to bottom 0/0 through 0/3 (see Table 4).
• LEDs on the 40–port Gigabit Ethernet faceplate indicate the port status. LEDs are labeled horizontally and left to right 0/0 through 0/5, 1/0 through 1/5, 2/0 through 2/5, and 3/0 through 3/5 (see Table 5).

Table 4: 4-port 10–Gigabit Ethernet IOC LEDs

Table 5: 40-port Gigabit Ethernet IOC LEDs

Two LEDs, located on the craft interface above the IOC, display the status of the IOC and are labeled OK and FAIL. For more information on the IOC LEDs located on the craft interface, see IOC and SPC LEDs.