Does ISSU on 9600 work better than other platforms

[lcaruso]

With the well known ISSU problems on other platforms such as 4507 where marketing and reality diverge and forklift upgrades with complete downtime are required, I can only hope the software engineers figured out a way to make it work reliably on the 9600s. 

Has anyone had consistent success or any success at all on the 9600s with ISSU, single or dual Sup?

Thanks in advance. 

[Leo Laohoo]

@Reza Sharifi, any opinions?

[Reza Sharifi · Accepted solution]

Hi Leo,

I don't have any 9600 to test with. I also have not seen a good, solid post from anyone using ISSU successfully with NO downtime. 

Thanks,

Reza 

[MHM Cisco World]

I have theory here' 

Why ISSU is failed sometime.

The cisco when releasing any upgrade it give some note about upgrade path' meaning you can jump from 6 to 7 directly you must upgrade to 6.x before upgrade to 7.

That misssing info.make many upgrade failed and I think ISSU can not handle it.

[lcaruso]

Yes, similar is described here https://quickview.cloudapps.cisco.com/quickview/bug/CSCwc54402