Data Flow in the SRX3400 Services Gateway

The services gateway receives data from the various physical interfaces on the I/O cards (IOCs). Incoming data is passed through the Switch Fabric Board (SFB) to a Network Processing Card (NPC), back to the SFB and on to a Services Processing Card (SPC). The data is then passed out of the services gateway in reverse order—to the SFB, NPC, SFB, and out to the IOC.

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