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The SRX3K-16GE-SFP IOC (Figure 1) adds 16 ports for Gigabit Ethernet traffic from either copper or fiber interface media. It is inserted horizontally into the midplane of the services gateway to communicate with the SFB and to receive power. To use fiber interface media, install small form-factor pluggable (SFP) transceivers on the desired ports. LEDs on the faceplate of the IOC indicate port status and connectivity. Ports are numbered from top to bottom and left to right, 0-15.

Figure 1: 16-Port SFP Gigabit Ethernet IOC
16-Port SFP Gigabit Ethernet IOC

For detailed information about supported transceivers, see the SRX Series Services Gateway Transceiver Guide   at


  • 16-port Ethernet SFP IOC for SRX3400, SRX3600, and SRX1400

  • Power requirement: 52 W maximum

  • Weight: 2.4 lb (1.1 kg)

Software release

  • Junos OS Release 9.3 and later

Cables and connectors

Sixteen SFP sockets for Ethernet transceivers

Supported SFP transceivers:

1000BASE-LH (model numbers SRX-SFP-1GE-LH, SRX-SFP-1GE-LH-ET)

1000BASE-LX (model numbers SRX-SFP-1GE-LX, SRX-SFP-1GE-LX-ET)

1000BASE-SX (model numbers SRX-SFP-1GE-SX, SRX-SFP-1GE-SX-ET)

1000BASE-T (model numbers SRX-SFP-1GE-T, SRX-SFP-1GE-T-ET)


ONLINE Button–The ONLINE button on the IOC front panel does not perform any function.

Supported Slots

  • SRX1400: Front slot labeled 2

  • SRX3400: Front slots labeled 1 through 4 (except as noted below)

  • SRX3600: Front slots labeled 1 through 6 (except as noted below)

Note: When an SRX3400 or SRX3600 Services Gateway is in the Express Path (formerly known as Services Offload) mode supported in Junos OS release 12.1X44-D10 and later, IOCs are only supported in front panel slots 1 through 3. See the Junos OS documentation for more information about Express Path mode.


IOCs are cold-swap-only modules. You must power-off the services gateway before removing, replacing, or adding IOCs.


SERVICE LED, one bicolor

  • Off–The IOC is administratively disabled, but mapped to the NPC.

  • Green–The IOC is mapped to the NPC and is available to carry Ethernet traffic.

  • Amber–The IOC is not mapped to the NPC and is not available to carry Ethernet traffic.

OK/FAIL LED, one bicolor

  • Steady Green–The IOC is operating normally.

  • Off–One or more of the following conditions apply:

    • The services gateway is not powered on.

    • The services gateway is still in the process of either booting or shutting down.

    • The services gateway is not configured for chassis clustering.

  • Blinking Green–The IOC is preparing for hot-plug event:

    • Card is being inserted: power up, booting, initialization.

    • Card is being removed: shut down by chassis management software.

  • Red–The IOC has failed and is not operating normally.

Serial Number Location

The serial number label for all IOC types is located as shown in Figure 2).

Figure 2: IOC Serial Number Label (SRX3K-16GE-TX Shown, Other IOCs Similar)
IOC Serial Number Label
(SRX3K-16GE-TX Shown, Other IOCs Similar)