Cisco 4500 Upgrade

[NETAD]

Hello, I'm planning an upgrade and need to know if it can be done without downtime. We have 2 4500's in a VSS running 03.07.01.E and wanting to go to 3.11.1. 

Can someone tell me the procedure and if I need to follow a certain path. 

thanks 

[Reza Sharifi]

You can go directly from 03.07.01.E to 3.11.1. but you need a maintenance window, as you would need to reboot both chassis at the same time. The boot time is about 15 minutes.

HTH

[NETAD]

Can you please send me the procedure.

[NETAD]

and documentation on where it says we can jump straight to the 3.11.1. Thanks

[Reza Sharifi]

Have a look at this post

https://community.cisco.com/t5/switching/4500x-upgrade-path-from-3-6-7-to-3-11-recommendation/td-p/4005179

This is for 4500x but you should be able to do the same with 4500 VSS.

HTH

[Leo Laohoo]

Read the Release Notes very, very carefully.

To upgrade a VSS pair to 3.11.X, the ROMMON must be upgraded.  

In regards to procedures, have a look at THIS.

[pkumari4]

Hello Netad,

I can see that you are looking to perform the upgrade on 4500 VSS with minimum downtime indeed 0 downtimes. You can use the ISSU method to achieve the same. I am sending you the compatibility matrix as well the procedure to perform an upgrade on the 4500 VSS using the ISSU method,.

The ISSU code compatibility matrix:

file:///Users/pkumari4/Downloads/Catalyst%204500_4900%20series%20ISSU%20compatibility%20matrix.pdf

The ISSU upgrade guide:

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/15-1-2/XE_340/configuration/guide/config/vss.html#wp1322727

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/XE3-8-0E/15-24E/configuration/guide/xe-380-configuration/issu_XE.html

Regards,

Priyanka

[Leo Laohoo]

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@pkumari4 wrote:

file:///Users/pkumari4/Downloads/Catalyst%204500_4900%20series%20ISSU%20compatibility%20matrix.pdf

---

This is not going to help. 

[Deepak Kumar]

HI,

I think @Leo Laohoo has shared a good guide and I am also using the same. I tried with ISSU but only 30% - 40% success rate and will take more time.