Flex I/O Cards and Port Modules

Flex I/O Cards (flex IOCs) are IOCs with two slots, which accept port modules that add Ethernet ports to your services gateway. A flex IOC with installed port modules functions in the same way as a regular IOC, but allows greater flexibility in adding different types of Ethernet ports to your services gateway. Figure 1 shows a flex IOC with two typical port modules installed.

Figure 1: Flex IOC with Port Modules

Note: Your services gateway must be running JUNOS version 9.5R1 or later in order to recognize flex IOCs and port modules.

Each flex IOC has a processor subsystem, which includes a 1.2-GHz CPU, a system controller, 1 GB SDRAM, and two Packet Forwarding Engines (PFEs) with a maximum throughput of 10 Gbps each. See Installing a Flex IOC and Removing a Flex IOC for information about installing and removing flex IOCs.

Table 1 describes the different port modules available.

Table 1: Port Module Types

You use port modules and flex IOCs to add different combinations of SFP, XFP, and TX ports to your services gateway to suit the specific needs of your network. The available port modules are shown in Figure 2. See Installing a Port Module and Removing a Port Module for information about installing and removing port modules.

Figure 2: Port Modules Supported on the Flex IOC

Flex IOC Components

Each flex IOC consists of the following components:

• Flex IOC cover, which functions as a ground plane and a stiffener
• Two slots for port modules
• 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 flex IOC
• Two interfaces from the SCBs that enable the flex IOC to be powered on and controlled
• Two 10 Gbps PFEs
• Midplane connectors and power circuitry
• Processor subsystem, including a 1.2-GHz CPU, a system controller, and 1 GB of SDRAM

Port Module Components

Each port module consists of the following components:

• Port module cover, which functions as a ground plane and a stiffener
• Physical I/O port connectors
• Ethernet switch
• Online button (behind pinhole) for bringing the port module online and offline
• Port module slot connectors and power circuitry

Port Module LEDs

LEDs on the faceplate of each port module indicate the status of the module and of each port. Table 2, Table 3, and Table 4 describe the LEDs on each port module type.

Table 2: 4-Port 10-Gigabit XFP Ethernet Port Module LEDs

Table 3: 16-Port SFP Ethernet Port Module LEDs

Table 4: 16-Port TX Ethernet Port Module LEDs