Another approach to consider is:
 
Replace all the AP's in a single building with something new.
Ditch the 1131's that came out of the building above, but redistribute any 
newer AP's to another building (with the same type), cycling out any 1131s 
there.
 
Jeff  

>>> On Monday, August 11, 2014 at 1:19 AM, in message 
>>> <cadbpxnwuikxzemadgrme2sn30jfrge+mhcchprb2reqrso2...@mail.gmail.com>, 
>>> Oliver Elliott <oliver.elli...@bristol.ac.uk> wrote:

I would like to be able to take this approach, but the current distribution of 
several age of AP in each building is going to make it tricky. The way I see 
see it, given our starting point, the best plan is as follows:

1. Replace the existing 1131s (Annoying due to the different mounting).
2. Move towards homogeneous, properly surveyed installs per building.
3. Start a regular replacement programme based on AP model, and hopefully given 
step 2, by building.

This allows us to partition off whole buildings if we ever get to a point where 
we cannot support both the oldest and newest APs at once.

Thankfully any new building that has come online in the past few years has been 
done this way, we just need to sort out the hundreds of other buildings to 
match!

Oli


On 7 August 2014 22:19, Jeffrey Sessler <j...@scrippscollege.edu> wrote:


We have an established life-cycle for all of our technology, and for wireless, 
it's every five years. This year we are bulk-replacing all of our 1252 and 1142 
"n" APs for the 3700 series ac models.
I tend to favor bulk-replacement since it's much easier to support a single 
model of AP vs seven different models.
Jeff


>>> On Thursday, August 07, 2014 at 1:00 AM, in message 
>>> <cadbpxnzqnr5srr5rpzgpvsj1ni5w+vtsxxfsoxv2543192h...@mail.gmail.com ( 
>>> mailto:cadbpxnzqnr5srr5rpzgpvsj1ni5w%2bvtsxxfsoxv2543192h...@mail.gmail.com 
>>> )>, Oliver Elliott <oliver.elli...@bristol.ac.uk> wrote:

Hi all 

I've been looking into EOLs and end of software support for some of our older 
APs and was wondering what other institutions do to keep their estate up to 
date. Up to now we've had very sparse funding for wireless as it was always 
viewed as an add on service. A recent outage (caused by buggy 7.6.120 code) has 
shown just how important Wifi has become. Up to now APs have been largely 
installed on an ad-hoc basis with funding from departments or projects but this 
doesn't tend to account for EOL replacement.

We're looking to apply for a formal replacement project based on either rolling 
yearly replacement budget or a big bang approach every few years.

So, how do you guys handle this problem?

Oli
-- 
Oliver Elliott 
Network Specialist 
IT Services 
University of Bristol 
e: oliver.elli...@bristol.ac.uk 
t: 0117 92 (87861) 
********** Participation and subscription information for this EDUCAUSE 
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-- 
Oliver Elliott 
Network Specialist 
IT Services 
University of Bristol 
e: oliver.elli...@bristol.ac.uk 
t: 0117 92 (87861) 
********** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
http://www.educause.edu/groups/. 

**********
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