[c-nsp] Need suggestion on cisco 3560 sw IOS

[Nick Hilliard]

On 26/06/2014 21:31, Peter Rathlev wrote:
> We have seen a few crashes on 12.2(53)SE2 and 15.0(1)SE3,

I've seen several boxes running 15.0(2)SE and rebuilds suddenly die with
memory problems.  The box would be fine for many months, then one day the
monitoring system would show that it had suddenly started losing ~1% memory
per hour and then would crash a couple of days later with OOM.  I caught
one in the act last week, and "show memory" suggested that the dot1x
process was chewing up fragments all over the place.  dot1x was disabled on
that switch.

Am currently installing 15.2 on new boxes as it provides much better
support for ipv6 neighbor security.  Haven't run into any major problems yet.

Also the OP should note that when you boot from from 12.2(52)SE to a later
versions, the boot loader will almost do a microcode upgrade on the C3560X
platform. Depending on the version involved, this can take up to 35 minutes
downtime per box.  The release notes still don't mention this as a risk,
which is not good.  It would be very helpful if cisco provided some
information on this in the release notes.

Nick