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Cisco ONS 15540 ESPx Hardware Installation Guide
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Chapter 1 Product Overview
Cisco ONS 15540 ESPx Components
Flash SIMM
The processor card Flash SIMM is a 16 MB, 80-pin SIMM that contains a
compressed Cisco IOS image that is loaded and executed automatically by
ROMMON upon powerup.
Flash PC Card Slots
The processor card has two Flash PC Card slots that are accessible from the front
panel. Either slot can be a memory or an I/O device.
The Flash PC Cards are typically used to copy system images and save standard
configurations. Flash PC Cards are a type of Flash memory that provide expanded
file storage for your system. Flash PC Cards, unlike the onboard Flash SIMM
(bootflash), are not required for the operation of the system.
Note
Not all cards that are commercially available are supported. Only
cards requiring 3.3V or 5V power are supported. No 12 VDC power
supply is available to the Flash PC Card slots.
lists the Flash PC Card slot LEDs on the processor faceplate and what
the conditions indicate.
NMI Clear
A recessed push button, labeled NMI CLR, is accessible through the faceplate to
clear an NMI (nonmaskable interrupt).
Note
To activate the switch, use a thin tool (such as a small screwdriver)
to press and release the button.
Table 1-6
Flash PC Card Slot LEDs
LED
Status
Description
SLOT 0
Green
Flash PC Card slot 0 is being accessed.
SLOT 1
Green
Flash PC Card slot 1 is being accessed.