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Same IOS versions globally

Posted on 2007-07-23
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Last Modified: 2010-03-18
Hi everyone. I was just given a project on standards and would like to implement the same IOS versions in my offices' routers and switches globally? How should I go about this, and what are tools that can be used for such purposes, while miniziming impact such as downtime, etc? How does your organizations achieve this, if this is already in place? What are the hurdles faced and what are the things that I should look out for?
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Question by:leftrightleft
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by:davidwainwright
ID: 19545642
The biggest hurdle you'll face is that even if you use the same IOS level, the feature sets will be different for different devices.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_paper09186a008018305e.shtml#t14 has details of how the IOS are packaged...
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by:logic2
ID: 19560323
If all your routers are of the same model then probably you wont have a problem
And you'd just get the lasted release from Cisco

However if your routers are different models
Then although the IOS may run, but sometimes you'd face bugs
i saw once an IOS giving problems when router is rebooted a command disappeared under the WAN interface.

Theoretically it is best to have the IOS that is designed for the model
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by:leftrightleft
ID: 19562704
Thanks for the answers but I am very interested to know how your organizations go about achieving this on a global basis.
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logic2 earned 500 total points
ID: 19562860

My Organization go with the approach i told you about
They check the router chassis, see the latest updates from cisco, test them and advise what best fits our requirements.
So we dont standarize the IOS on our routers, each router model has a specific recommended IOS
By the way, my company is a big one
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by:davidwainwright
davidwainwright earned 500 total points
ID: 19563323
My enterprise pefrom audit of devices at install-time, and then upgrade to new versions on a single-instance basis; this way devices are not missed from the process or have incorrect image loaded.

Dave
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by:logic2
ID: 22356445
any update on this ?????
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