Users Guide

Alarms | 53
SFMs and Alarms
The number of SFMs present in the system when it boots determines the level of alarms sent when a fifth
(redundant) SFM is removed or fails. At boot time, if five SFMs are present and functioning, the E-Series
system issues no alarms. However, if one SFM fails or is removed, the system send a minor alarm stating
that four SFMs are present. The system requires four functioning SFMs to pass traffic.
At boot time, if four SFMs are present and functioning, the E-Series system issues no alarms. The system
issues no alarms if a fifth SFM is added to the system; however, if the number of functioning SFMs
changes from five to four, the system sends a minor alarm event. The system always triggers a major
alarm when the number of working SFMs reaches three.