Figure 242: Sfm Component; Figure 243: M40E And M160 Router Sfm Location - Juniper M Series Monitoring And Troubleshooting Manual

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Figure 242: SFM Component

The SFMs provide route lookup, filtering, and switching. When the serial stream of bits

leaves the FPC, it is directed to one of the SFMs. Each SFM effectively handles one-half

or one-quarter of the traffic on each FPC. The SFMs handle a total of 160 million packets

per second (Mpps) of forwarding.

The SFMs are hot-removable and hot-insertable. Inserting or removing an SFM causes

a brief interruption in forwarding performance (about 500 ms) as the Packet Forwarding

Engine reconfigures the distribution of packets across the remaining SFMs.

Checklist for Monitoring the SFMs on page 441

Chapter 18: Monitoring the SFMs