Great Links for ISSU on Nexus 7K

Great Link for ISSU on 7K, a well written blog by Fry Guy

http://blog.fryguy.net/2010/08/10/nexus-7000-nxos-upgrade-via-issu/

I'll highlight some upgrade commands from Fry Guy's blog:

Fry Guy: "Prior to the upgrade of the code, I highly recommend checking the impact of the upgrade.  This is a good command to run when you are preparing your Chance Controls as you can validate the file as well as the impact. You can do this by using the following command"

N7K1# show install all impact kickstart bootflash:n7000-s1-kickstart.5.0.3.bin system bootflash:n7000-s1-dk9.5.0.3.bin

Actual upgrade command

install all kickstart bootflash:n7000-s1-kickstart.5.0.3.bin system bootflash:n7000-s1-dk9.5.0.3.bin
Always great to read the latest Cisco docs on ISSU, which at the time of this post:

http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/high_availability/configuration/guide/ha_issu.html#wp1070809

http://www.cisco.com/en/US/docs/switches/datacenter/sw/4_0/nx-os/upgrade/guide/nx-os_upgrade.html#wp295882

This CCIE has a good blog on ISSU as well.

http://ccie5851.blogspot.com/2011/01/joys-of-issu-on-nexus-7000.html

One of the comments on that blog, ( that I also remember from Nexus class), is that if the EPLD on the module needs to be updated, that its not an ISSU! There will be downtime.