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what's thinking on IOS 15 ?

All our cisco network gear is currently on IOS 12.4.  I've asked around locally, and everyone else I've talked to is using 12.something as well.  GNS3 uses 12, and has no plans to include 15.  

 On the downloads site Cisco is pushing IOS 15.  

What's the thinking on 15?  Or is it better to just keep current within IOS 12?
Or is there more to the issue than simply a version change?
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mlnpscda
Asked:
mlnpscda
1 Solution
 
Jan SpringerCommented:
15 works great from my perspective.  I've not seen any problems and it's been running on a couple of routers since shortly after it came out.

Upgrades are typically defined by:

  1) Needed features in later releases
  2) Bugs in current IOS
  3) Security vulnerabilities in current IOS
  4) EOL - no maintenance plans available in current IOS
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