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.
Figure 243: M40e and M160 Router SFM Location
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.
Related
Documentation
Checklist for Monitoring the SFMs on page 441•
443Copyright © 2012, Juniper Networks, Inc.
Chapter 18: Monitoring the SFMs