This document explains the step-by-step procedure to upgrade the Cisco
NX-OS on Cisco Nexus 5000 Series Switches.
Cisco recommends that you have knowledge of these topics:
The information in this document is based on these software and
Refer to the
Technical Tips Conventions for more information on document
The Cisco Nexus 5000 Series switches have these images:
The switch has flash memory that consists of two separate flash
2 MB flash part holds two BIOS and loader images.
1 GB flash part holds configuration files, kickstart images, systems
images, and other files.
The upgradeable BIOS and the golden BIOS are programmed onto the 2 MB
flash part. You cannot upgrade the golden BIOS.
When you download a new pair of kickstart and system images, you also
get a new BIOS image because it is included in the system image. You can use
the install all command to upgrade the kickstart,
system, and upgradeable BIOS images.
A Cisco Nexus 5000 Series switch starts its boot process as soon as its
power cord is connected to an A/C source. The switch does not have a power
When the switch boots, the golden BIOS validates the checksum of the
upgradeable BIOS. If the checksum is valid, control is transferred to the
upgradeable BIOS image. The upgradeable BIOS launches the kickstart image,
which then launches the system image. If the checksum of the upgradeable BIOS
is not valid, then the golden BIOS launches the kickstart image, which then
launches the system image.
You can force the switch to bypass the upgradeable BIOS and use the
golden BIOS instead. If you press Ctrl-Shift-6 within two seconds of when power
is supplied to the switch, the golden BIOS is used to launch the kickstart
image, even if the checksum of the upgradeable BIOS is valid.
When you press Ctrl-Shift-6, the console settings must be set
to their defaults: 9600 baud, 8 data bits, no parity, and 1 stop
Before the boot sequence starts, the BIOS performs internal tests on
the switch. If the tests fail, then the loader does not gain control. Instead,
the BIOS image retains control and prints a message to the console at 9600 baud
every 30 seconds that indicates a failure.
The loader, kickstart, and system images have these factory default
Databits—8 bits per byte
These settings are stored on the switch, and all three images use the
stored console settings.
To change a console setting, use the line console command in
configuration mode. This example configures a line console and sets the options
for that terminal line:
switch# configure terminal
switch(config)# line console
switch(config-console)# databits 7
switch(config-console)# exec-timeout 30
switch(config-console)# parity even
switch(config-console)# stopbits 2
You cannot change the BIOS console settings. These are the same as the
default console settings.
Note: Users with the network-admin role can upgrade the software
image on the switch.
Complete these steps:
Log in to the switch on the console port
Go to http://www.cisco.com/, click Log In at the
top of the page, and enter your Cisco username and password in order to log in
Note: Unregistered Cisco.com users cannot access the links
provided in this document.
Software Download Center
(registered customers only)
Navigate to the software downloads for Cisco Nexus 5000 Series
switches. You see links to the download images for the
Read the release notes for the related image
Select and download the kickstart and system software files to a
Ensure that the required space is available in the bootflash:
directory for the image file(s) to be copied.
switch# dir bootflash:
5910 Jun 17 14:48:28 2008 config0617
453 Jan 01 00:12:13 2005 ent-fm.lic
453 Jan 01 20:50:55 2005 ent-fm123.lic
453 Jan 01 20:58:49 2005 ent-fm123456.lic
215 Jan 01 00:13:50 2005 enterprise.lic
221 Jan 01 04:25:43 2005 eth-mod.lic
219 Jan 01 04:26:14 2005 eth-port.lic
216 Jan 01 00:21:48 2005 fc-feature.lic
49152 Jul 28 09:42:51 2008 lost+found/
21581824 Jul 08 10:11:14 2008 n5000-uk9-kickstart.4.0.0.N1.1.445.bin
21573632 Jul 28 09:38:33 2008 n5000-uk9-kickstart.4.0.0.N1.1.47.bin
20062208 Jul 28 09:43:05 2008 n5000-uk9-kickstart.4.0.0.N1.2.467.bin
77139580 Jul 08 10:10:45 2008 n5000-uk220.127.116.11.N1.1.445.bin
75270834 Jul 28 09:38:33 2008 n5000-uk18.104.22.168.N1.1.47.bin
76924383 Jul 28 09:44:01 2008 n5000-uk22.214.171.124.N1.2.467.bin
4096 Jan 01 00:07:37 2005 routing-sw/
3697 Apr 30 14:53:07 2008 startup-config
4096 Aug 08 12:49:09 2008 test/
0 Jan 03 04:19:13 2005 thttpd_output
782893 Jan 21 16:56:14 2005 zone-scale-config.out
126927 Jan 21 16:55:45 2005 zoneset-scale-config.out
Usage for bootflash://sup-local
855547904 bytes used
6942613504 bytes free
7798161408 bytes total
If you need more space on the active supervisor module bootflash,
delete unnecessary files to make space available.
switch# delete bootflash:n5000-uk9-kickstart.4.0.0.N1.1.445.bin
switch# delete bootflash:n5000-uk126.96.36.199.N1.1.445.bin
Copy the kickstart and system images to the supervisor module
bootflash with a transfer protocol. You can use ftp:,
tftp:, scp:, or sftp:. The
examples in this procedure uses scp:
Install the new images, specifying the new image names that you
downloaded in Step 9.
switch(config)# install all kickstart
Performs compatibility checks (equivalent to the show
incompatibility command) for the images that you have specified. If there are
compatibility issues, an error message is displayed, and the installation does
Displays the compatibility check results and displays whether the
installation is disruptive.
Provides a prompt to allow you to continue or abort the
Note: A disruptive installation causes traffic disruption
while the switch reboots.
Updates the boot variables to reference the specified images and
saves the configuration to the startup configuration
After the switch completes the installation, log in and verify that
the switch is running the required software version.
switch# show version
Cisco Nexus Operating System (NX-OS) Software
Copyright ©) 2002-2008, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software may be covered under the GNU Public
License or the GNU Lesser General Public License. A copy of
each such license is available at http://www.gnu.org/licenses/gpl.html and
BIOS: version 1.2.0
kickstart: version 4.0(0)N1(2)
system: version 4.0(0)N1(2)
BIOS compile time: 06/19/08
kickstart image file is: bootflash:/n5000-uk9-kickstart.4.0.0.N1.2.467.bin
kickstart compile time: 7/28/2008 2:00:00 [07/28/2008 09:41:24]
system image file is: bootflash:/n5000-uk188.8.131.52.N1.2.467.bin
system compile time: 7/28/2008 2:00:00 [07/28/2008 10:09:17]
cisco Nexus5020 Chassis ("40x10GE/Supervisor")
Intel®) Celeron®) M CPU with 2074164 kB of memory.
Processor Board ID JAB120600AY
bootflash: 7864320 kB
nms-eugene-02 kernel uptime is 11 days 3 hours 15 minute(s) 19 second(s)
Last reset at 63897 usecs after Mon Jul 28 09:46:39 2008
Reason: Reset by installer
System version: 4.0(0)N1(1)