JUNOS Internet Software Network Operations Guide: Hardware
358 ! Replacing the SFM
Replacing the SFM
The SFMs are hot-removable and hot-insertable. You can remove and replace SFMs
without powering down the router or disrupting the routing functions. However, you
must take an SFM offline before replacing it.
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.
Action To replace an SFM, see “Return the Failed Component” on page 86, or the
procedure to return a field-replaceable unit in the M40e or M160 router hardware
guide.
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