Re: [WIRELESS-LAN] Older Apple devices and issues with 802.11N(2.4Ghz)

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

RE: [WIRELESS-LAN] Backup power

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

Re: [WIRELESS-LAN] Cisco FRA APs

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

Re: Backup power

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

RE: [WIRELESS-LAN] Cisco FRA APs

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:

Re: Backup power

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

RE: [WIRELESS-LAN] Backup power

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

Re: [WIRELESS-LAN] Backup power

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:

Re: [WIRELESS-LAN] Backup power

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

RE: [WIRELESS-LAN] Backup power

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

Re: [WIRELESS-LAN] Backup power

> 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

RE: [WIRELESS-LAN] Backup power

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,

Re: [WIRELESS-LAN] Backup power

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%

RE: [WIRELESS-LAN] Backup power

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

Re: [WIRELESS-LAN] Backup power

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

RE: [WIRELESS-LAN] Backup power

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

RE: [WIRELESS-LAN] Backup power

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

Backup power

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