Nexus 5548UP ISSU Question

[sean.demura]

I have 2 Nexus 5548UP w/ the layer 3 daughter cards on them. As such, ISSU cannot be done, but has anyone had any issues with upgrading the 5k's when they are HA configured with vPCs?

Also, is the install process any different with the layer 3 cards?

[Reza Sharifi]

Upgrading 5500 is fairly simple and you need short outage window.  Load the OS and the kick start image you want to a flash USB drive. Then copy from USB to internal flash, set your boot variable and reboot.  The 5500 boots in less then 5 minutes.

http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/upgrade/503_N1_1/n5k_upgrade_downgrade_503.html#wp640826

HTH