Booting The Supervisor Engine Iii From Flash; Setting The Boot Configuration Register; Configuring Cisco Express Forwarding; Enabling Cef - Cisco RJ-45-to-AUX Brochure

Booting the Supervisor Engine III from Flash

To boot from a Flash device, use the following command:
boot [device][image name]
Note If you do not specify an image file name, the system defaults to the first valid file in the device.
Remember that file names are case sensitive. Use the show flash command to view the Flash
files. The device can be the local Supervisor Engine's Flash memory or a TFTP server.
Related solution:
Using the show flash Command on a Set/Clear
Command−Based IOS

Setting the Boot Configuration Register

You can set the boot method for the switch manually using the boot field in the configuration register. This
command affects the configuration register bits that control the boot field, similar to the way a router does.
There are three syntaxes for the set boot config−register boot command:
rommon—This syntax forces the switch to remain in ROM Monitor mode at startup.
bootflash—This syntax causes the switch to boot from the first image stored in Flash memory.
system—This syntax allows the switch to boot from the image specified in the BOOT environment
variable.
To set the configuration register boot field, use the following command in Privileged EXEC mode:
set boot config−register boot {rommon|bootflash|system} [module number]
Here's an example of using the command:
Seans5002> (enable) set boot config−register boot rommon 1
Configuration register is 0x140
ignore−config: enabled
console baud: 9600
boot: the ROM monitor
Seans5002> (enable)

Configuring Cisco Express Forwarding

You configure CEF in the Global Configuration mode. The following commands for configuring CEF and
dCEF are available on the Cisco 8500 and 12000 GSR series.

Enabling CEF

To enable standard CEF, use the following command:
ip cef

Disabling CEF

To disable standard CEF, use the following command:
no ip cef
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