Switch Fabric; Figure 1-6 Alarm Card Faceplate Leds, Switches, And Connectors - Cisco GSR12/60 - 12012 Router -AnyLAN, SONET/SDH Installation And Configuration Manual

Note
alarm 2 connectors. Maximum rating for the alarm circuit is 2 amps, 50 volt-amp.
•
CSC/SFC LEDs—Five pairs of LEDs (one pair for each slot in the lower card cage)
showing clock and scheduler card status and switch fabric card status. A green enabled
LED indicates that the card in that slot has been detected by the system. A red fail LED
indicates that the system has detected a fault in the card in that slot.
Figure 1-6

Switch Fabric

The heart of the Cisco 12012 is the switch fabric circuity, which provides synchronized
gigabit speed interconnections for the line cards and the RP. The switch fabric circuitry is
contained on two types of cards, a clock and scheduler card and a switch fabric card, which
install in the five slots in the lower card cage. (See Figure 1-7.) A clock and scheduler card
is installed in either slot 0 or slot 1 (CSC 0 or CSC 1) in the lower card cage; a switch fabric
card is installed in slot 2, slot 3, or slot 4 (SFC 1, SFC 2, or SFC 3) in the lower card cage.
Only safety extra-low voltage (SELV) circuits can be connected to the alarm 1 and
Alarm Card Faceplate LEDs, Switches, and Connectors
Critical, major, and
minor alarm LEDs
Physical and Functional Overviews
Pin 1
ALARM 1
Pin 25
Audio alarm
cutoff switch
Pin 1
ALARM 2
ALARM
Pin 25
Clock and scheduler card
and switch fabric card LEDs
Product Overview 1-25