Cisco 7200 Compact Flash Disk for NPE-G1, 256 MB Option MEM-NPE-G1-FLD256= User Manual
Product codes
MEM-NPE-G1-FLD256=
1-3
Memory Replacement Instructions for the Network Processing Engine or Network Services Engine and Input/Output Controller
OL-8358-03
Chapter 1 CompactFlash Disk, Flash Disk, and Flash Memory Card Information
Boot Environment Variables
Note
A complete discussion of the Cisco IOS File System feature is beyond the scope of this publication. For
information about this feature, refer to the Configuration Fundamentals Configuration Guide and
Configuration Fundamentals Command Reference publications for Cisco IOS Release 12.x. These
publications are available on the Documentation DVD and on Cisco.com.
information about this feature, refer to the Configuration Fundamentals Configuration Guide and
Configuration Fundamentals Command Reference publications for Cisco IOS Release 12.x. These
publications are available on the Documentation DVD and on Cisco.com.
Boot Environment Variables
By default, and as a result of a reset or power on, the ROM monitor loads the boot image from boot flash
memory. If the ROM monitor cannot find a bootable image in boot flash memory, it searches the
CompactFlash Disk or PC card-based devices (such as linear Flash memory cards or Flash Disks) for the
first bootable image.
memory. If the ROM monitor cannot find a bootable image in boot flash memory, it searches the
CompactFlash Disk or PC card-based devices (such as linear Flash memory cards or Flash Disks) for the
first bootable image.
The boot image, when loaded, looks in the boot environment variables—stored in nonvolatile
random-access memory (NVRAM)—to determine the location of the Cisco IOS software image and the
configuration to use. If boot environment variables are not defined, the system will boot the first image
found on a Flash Disk, or if no such image is found, the system will boot the first image found on a linear
Flash memory card.
random-access memory (NVRAM)—to determine the location of the Cisco IOS software image and the
configuration to use. If boot environment variables are not defined, the system will boot the first image
found on a Flash Disk, or if no such image is found, the system will boot the first image found on a linear
Flash memory card.
The contents of the boot environment variables, which are stored in the configuration file in NVRAM,
determine the actions your system takes on bootup. To see the current settings of these variables, use the
show bootvar command as follows:
determine the actions your system takes on bootup. To see the current settings of these variables, use the
show bootvar command as follows:
Router> show bootvar
BOOT variable =
CONFIG_FILE variable =
Current CONFIG_FILE variable =
BOOTLDR variable does not exist
Configuration register is 0x100
Following are explanations for each of these boot environment variables:
•
BOOT variable—Points to the Cisco IOS software image that you want to boot; you set it in
configuration mode. The default software image is the CISCOxxx image (where xxx is a filename
assigned by the system, if you do not enter a specific filename). The system then looks for the first
image on the Flash Disk in slot 0.
configuration mode. The default software image is the CISCOxxx image (where xxx is a filename
assigned by the system, if you do not enter a specific filename). The system then looks for the first
image on the Flash Disk in slot 0.
Table 1-3
PC Card Options
1
1.
All linear PC card memory options have reached End-of-Life and are no longer orderable, but they can continue to be used
in existing legacy installations.
in existing legacy installations.
Memory Size
Product Number
Supported I/O Controllers
16 MB
MEM-I/O-FLC16M
C7200-I/O, C7200-I/O-FE, C7200-I/O-FE-MII,
UBR7200-I/O, UBR7200-I/O/FE
UBR7200-I/O, UBR7200-I/O/FE
20 MB
MEM-I/O-FLC20M
C7200-I/O, C7200-I/O-FE, C7200-I/O-FE-MII,
UBR7200-I/O, UBR7200-I/O/FE
UBR7200-I/O, UBR7200-I/O/FE