Good morning -
I would be interested to know how many of you include UPS purchases for
switches in each network closet in your campus deployments. If you do not
build in backup power, do you put your switches on a maintenance contract,
or do you pay to replace them when they fail outside of warran
Sandy,
We put UPS backup on every switch/stack on our 13 campuses to support VOIP
phones in the event of a power outage for a minimum of 15 minutes. Some
campuses have a generator, and the UPS is only there to buffer.
As for our switching, all edge switches are HP/Aruba which carry lif
It is a mixed bag for us. We have over 80 closets on our campus. If we
think a location has reliable power, we don’t bother and we just replace a
switch if something happens. We did identify 5 residential buildings that
have unreliable power so we put UPS’s in them. The other buildings
litera
Sandy,
We install a UPS on every network room/switch stack. We use Cisco which have a
limited life-time warranty, however we subscribed to maintenance for one of
each model switch to obtain TAC support and access to firmware revisions.
James A. Pampinella
IT Manager
Network and Wiring Services
I always put every switch on a UPS.
On Thu, Jul 20, 2017 at 11:02 AM, Sandra Bury
wrote:
> Good morning -
>
> I would be interested to know how many of you include UPS purchases for
> switches in each network closet in your campus deployments. If you do not
> build in backup power, do you put yo
We have *almost* all of our network closets on centralized UPS (10 to 40 KVA)
that is fed from an e-power circuit that has a emergency generator behind it.
These units are on a maintenance contract and batteries are replaced on a
regular schedule as required.
For the few closets are unable to p
Power is extremely reliable on our campus, but we still try to provide
battery backup for most of our switches (VOIP and life safety reasons).
We have found that the small 1500-2200VA UPS units need battery swaps
every 3 years and full replacement every 6-9 years if you want to
guarantee 100% r
We have an APC Smart-UPS in every closet. Between VoIP, WiFi, paging, HVAC,
door locks, and repeaters for 2-way radios, we can’t let a power glitch
interrupt connectivity, especially since we’re in a rural area prone to
brownouts and blackouts.
We’re also on a hill, prone to lightning strikes,
> On Jul 20, 2017, at 10:02, Sandra Bury wrote:
>
> I would be interested to know how many of you include UPS purchases for
> switches in each network closet in your campus deployments.
We put our switches on UPS. When a larger building UPS is available from
facilities, we use that instead of
We routinely put UPS's in our closets. One thing to keep in mind concerning
reliability. Properly cooled closets tend to be more reliable and have longer
battery life then closets with higher temperatures. We use management cards to
monitor when they have a battery failure. Hot closets can have
We size and install a UPS in every switch closet. We have only a few models of
switch and access point, so we built a spreadsheet to calculate our power load
based on actual power draw observed in our lab. We try to size our UPSes to
provide a minimum of 15 minutes of uptime with 150% of their
In theory, we use UPS with all of our switch. In practice, while we always
have one when we deploy a new or replacement switch, the funding hasn't
been there for maintaining the batteries or replacing a UPS if it fails.
Joel Coehoorn
Director of Information Technology
402.363.5603
*jcoeho...@yor
I'm curious, what software do you use to manage your UPSs and if you could
describe the setup (SNMP, something else) that would be very helpful to us at
UC Hastings?
---
Nicholas Urrea
UC Hastings College of the Law
Director of Information and Network Security
Information Technology
e: urr...@u
Sandra,
We are also an APC customer, but it looks like our parts differ a bit from
others. We use the SMX1500RM2UNC model on our MDF/IDF locations. With the SMX
series, X is for extended runtime and allow for additional battery packs to be
added for more runtime. This part number also is a c
We do not use UPSes generally. Everyone’s situation is different.
Our electricity is very stable, and, for us, the UPSes cause more prolonged
outages than the actual electrical outages. So if a UPS is used (optional),
the connected device must be either dual power supplied (with one bypassing
We are currently running version 8.2.151.0 which looks to be the most recent
8.2 release.
Thanks
Bruce
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Luke Jenkins
Sent: Wednesday, July 19, 2017 4:57 PM
To: WIRELESS-LAN@LIS
Thanks for all of the thoughtful and expeditious responses!
*Sandra H. Bury*
Executive Director, Computing Services
Information Resources and Technology
Bradley University
309-677-2808
sa...@bradley.edu
On Thu, Jul 20, 2017 at 10:02 AM, Sandra Bury
wrote:
> Good morning -
>
> I would be inte
In general, here are the important items.
* Make sure your 802.11a/n/ac and b/g/n DCA timers are at the default 10
mins. This is critical since FRA uses the data from DCA runs to decide changes
for the radio. If this runs only once every six hours, FRA will not be able to
make an informed (
I would ask why the connection between a UPS and maintenance contract? We have
a mix of UPSes in important locations and *quality* surge supressors in others.
We’ve had two switches fail due to power issues (out of roughly 100 on campus)
over the past 5 years, and both were actually connected to
I think the following would be interesting to share...
To recap - I found when I disable all 802.11N data rates on the Cisco
1602i, 1602e, or 1702i radios and force these client to use B/G, they
work as expected. Once I enable any MCS data rates the problem presents
itself. I think that prove
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