Cisco 10005 Instalační příručka stáhnout pdf (Strana 22)

Cisco 10000 Series Router Performance Routing Engine Installation

OL-3971-03

Managing System Boot Parameters

Upgrading Software on Redundant PREs

This section tells you how to upgrade software on redundant PREs. For the procedure described here to

work, PRE redundancy should be configured as auto-sync standard (the default). See the

“Synchronizing PRE Configurations” section on page 20.

Step 1 Copy the IOS image from a TFTP server to the Flash disk in slot 0.

Router# copy tftp disk0:

Address or name of remote host [172.31.53.64]?

Source filename [c10000/c10k-p6-mz]?

c10000/c10k-p6-mz

Accessing

tftp://172.31.53.64/c10000/c10k-p6-mz

Loading c10000/c10k-p6-mz from

172.31.53.64 (via FastEthernet0/0/0):

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...

[OK - 5717476/11433984 bytes]

5717476 bytes copied in 250.840 secs (22869 bytes/sec)

Router#

Step 2 Copy the same image to the secondary PRE Flash disk in slot 0.

Router# copy tftp sec-disk0:

The output is the same as that shown in Step 1.

Step 3 Tell the Cisco 10000 router the location in which the new boot image resides. In the following example,

the system is told that the image “c10k-p6-mz” is located on disk 0:

Router(config)# boot system flash disk0:c10k-p6-mz

Step 4 Copy the running configuration to the startup configuration.

Router# copy running-config startup-config

Step 5 Reset the secondary PRE so that it reboots and uses the new image.

Router# hw-module sec-cpu reset

Step 6 Force a cutover to the secondary PRE, which forces the primary PRE to reboot and use the new image.

Router# redundancy force-failover main-cpu

Both PREs are now running the new Cisco IOS image.

Managing System Boot Parameters

This section tells you how to use IOS to modify PRE boot parameters.

During the boot process, the system reads a software configuration register that defines certain system

parameters. The software configuration register is a 16-bit register in NVRAM used to define such

characteristics as:

• The source of the Cisco IOS software image required to run the router

• Whether the system software should ignore the contents of NVRAM

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Cisco 10005 Instalační příručka Strana 22