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CSA-7400 QSG
9 Hot-Swapping
9.1 Hot-Swapping the MCN-2600T Sled
Before hot-swapping the MCN-2600T, the user must first shutdown the OS by executing a
command from the OS or holding down the power button more than 4 seconds.
9.2 Hot-Swapping the MXN-3610 Sled
When hot-swapping the MXN-3610, the user must first push the hot-swap (H/S) button at the
lower right of the front panel, and wait until the ATN LED turns on before removing the MXN-
3610 from the chassis.
A detailed description of the hot-swap process is outlined below:
•
When the H/S button is pushed, the signal is replicated by a logic module on the mid
plane and sent to the four MCN-2600T CPU sleds. At the same time, a graceful
shutdown of the COMe module is triggered by briefly pulling the COMe PWR_BTN
GPIO high, emulating a user to push the power button.
•
When the MCN-2600T detects the H/S signal, it will perform a PCIe device removal on
CPU sled based on the PCIe hot-swap specification. When the CPU sled finishes this
task, it asserts its ATN LED line.
•
After the logic module on the midplane detects that all ATN LED lines are asserted and
the COMe module S5 signal is also asserted, it will turn on the ATN LED on the MXN-
3610 front panel.
ATN LED
