North American Network Operators Group

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Re: [c-nsp] Which IOS do *you* use?

  • From: Robert Boyle
  • Date: Tue Mar 21 03:42:56 2006

At 05:29 PM 3/20/2006, you wrote:
    I've got a customer running a few 3660s with 12.2.29 on them. We
went back to 12.2.29 because we saw all sorts of evil stuff with 12.3.16
on our test box - we'd drop all BGP sessions and end up with half a
dozen obviously foreign prefixes listed as directly connected. The 12.2
train shows none of this sort of stuff.

   I touch BGP on 3660s, 7200s, and 7500s and this is a common theme -
the customers I have are sticking to the 12.2 train. Is anyone seeing
different trends than this? I'd be curious to know if there are certain
12.3 versions that act better than others, etc.
We run mostly on 7200s. 12.3 definitely still has some bugs. Esp. with odd things like directly connected routes and networks disappearing from the routing table when using CEF - at least until you globally disable and re-enable CEF. However, there are some scenarios where we have to use the 12.3 train. We run 12.2(20 something) wherever possible. We have some customers running super new gear with 12.4T. Craziness I say! I'm not directly involved with those clients at all, but I certainly wouldn't want to run that in production yet. :)


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