UPS's in switch closets?

Hello everyone! I am curious what everyone does in their standard client access
switch closet, do you have UPS's in every closet or do you have nice surge suppressors
to protect your client access switches?
Sent from Cisco Technical Support iPad App

[email protected] wrote:Hello everyone! I am curious what everyone does in their standard client accessswitch closet, do you have UPS's in every closet or do you have nice surge suppressors to protect your client access switches? Sent from Cisco Technical Support iPad App
How big is your network, and how much money do you have to spend?
I've most recently been working on data-center sized networks, and they tend to be covered by large, center-wide UPS's with generator backup - the UPS and associated rectifiers isolate the protected kit from any chance of surges, so they're not needed on a rack-by-rack basis.
That's not a viable option for a smaller network or client base, so you sometimes need to think outside the box - one place I'm working on has two racks, one large UPS in the bottom of one rack and a PDU for each rack running the essential hardware (switches, servers, not monitors or non essential stuff) running off the one UPS.
There's no one size fits all solution - if you have widely distributed network closets/racks and don't want to put a UPS in each rack, your best bet might be getting switches with redundant power supplies and ensuring each supply runs off a separate electrical phase - since a lot of power outages only affect one phase at a time, you can often survive brief otuages on the secondary supply until the primary is restored.
Cheers

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Does Intelligent Management Center Support UPS's?

My IT department is getting Intelligent Management Center to replace some monitoring in SolarWinds. I want to know if Intelligent Management Center supports UPS's and what brands?

[email protected] wrote:Hello everyone! I am curious what everyone does in their standard client accessswitch closet, do you have UPS's in every closet or do you have nice surge suppressors to protect your client access switches? Sent from Cisco Technical Support iPad App
How big is your network, and how much money do you have to spend?
I've most recently been working on data-center sized networks, and they tend to be covered by large, center-wide UPS's with generator backup - the UPS and associated rectifiers isolate the protected kit from any chance of surges, so they're not needed on a rack-by-rack basis.
That's not a viable option for a smaller network or client base, so you sometimes need to think outside the box - one place I'm working on has two racks, one large UPS in the bottom of one rack and a PDU for each rack running the essential hardware (switches, servers, not monitors or non essential stuff) running off the one UPS.
There's no one size fits all solution - if you have widely distributed network closets/racks and don't want to put a UPS in each rack, your best bet might be getting switches with redundant power supplies and ensuring each supply runs off a separate electrical phase - since a lot of power outages only affect one phase at a time, you can often survive brief otuages on the secondary supply until the primary is restored.
Cheers

Question re cable to connect UPS to computer

The cable that connects my APC XS 1500 UPS unit to the computer seems to be defective all of a sudden.
I have no similar USB-to-RJ-45 cable handy. Could I safely connect the data-out port on the APC unit to the spare Ethernet input on the G5-Quad with a regular Ethernet cable, or am I likely to mess up anything?
Thanks in advance.

Well, I've heard back from "Shanmukhi" at APC. Typical East Indian response:
Ramon, I understand that you are facing some issue with the cable. I am afraid to say that it is not recommended to use other cable rather than USB cable that ships with the UPS.
Other than that—and after exchanging the third email—they have not been helpful in the least. Even after I've told them that a second, IDENTICAL unit is recognized when connected through the same cable and USB port, Shanmukhi gives me the usual nonsense about trying a different USB port, etc.:
I understand that the software has lost communication with the Back-UPS unit. If the UPS's USB connection is not being recognized, there are few steps that we can try:
1. Perform Reboot of the system:
a. Unplug the USB cable, shut down the PC, shut down the UPS.
b. Switch on the UPS, switch on the PC.
c. When the operating system is fully loaded, plug the USB in, and see if it is recognized.
2. Check in your computer's Bios for the following settings:
a. Legacy USB support should be ENABLED.
b. Advanced Power Management should be DISABLED.
In case, the above steps do not resolve the issue, please click the link below for further assistance:
http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_sid=…
If you have any further question, please get back to me with the following details:
1. Is the USB Host controller listed under Device Manager without an error?
2. Does your computer detect the UPS via USB cable when the cable is attached?
3. Is the USB cable attached directly between the UPS and Computer USB port?
4. Have you tried different USB ports on your computer?
Looking forward to hear from you. I will be happy to assist you further.
All of that, of course, is totally irrelevant after I've told them that: "a second, IDENTICAL unit is recognized when connected through the same cable and USB port."
Sigh…

UPS suggestion for 24" iMac

Any suggestions on which size UPS to get for my 24" iMac?
Nothing else connected to it.
Thanks,
Marcantonio

Depending on what kind of backup runtime and other features you expect to
have in an uninterrruptible power supply, the size may end up being rather big.
A simple APC 1250VA 750Watt unit will only run my iMac G4 17" 1.25GHz
computer (uses about 40 watts) for a little more than an hour. With the native
OS X UPS software already in the system, you can set the UPS to shut off
the computer in Energy Saver system preference panel, and manage some
basic settings for using the UPS with most any modern Mac and not need
the APC or other branded software they include on a CD in the box.
If you hope to be able to catch any processes in-progress and complete them
during an unexpected power interruption, you would need to have an external
enclosed hard disk drive or time machine device also running on backup power;
then you could at least hope to save any initiated processes completely even if
the power should go out during a routine backup of your system files or work.
Since a UPS can auto-switch and maintain power at a tolerable level during a
brown-out or surge of high power, this 'automatic voltage regulation' feature
can save a logicboard, a power supply or other computer component from a
dose of bad power. These better models can also filter the power.
I'd avoid the inexpensive low-end units, since they also have a shorter life; not
just the battery backup cycles, but the lack of runtime when you may need it.
And some models have a better quality battery. A few I have owned have no
user replaceable parts inside; so the whole unit becomes disposable when a
battery should be easily swapped out.
It is a good idea to have two uninterruptible power supply units; one for the
computer and one for any accessories you may which to be able to run and
have filtered power go to; which would be attached to the computer. Things
such as powered USB hubs, and anything else, could be hooked up in a way
as to protect the computer from anything attached to the computer from a jolt.
Some items should not be attached to a UPS, but I have anyway; some kinds
of light fixtures and other accessories you may need while computing, so as
to finish the job and gracefully quit all tasks and then shut off the computer.
Availability of replacement batteries, factory warranty, and local coverage on
a UPS unit are things to consider when buying one; the batteries are heavy,
so if you end up buying one, note the shipping costs can erase a bargain deal.
Good luck & happy computing!

UPS Warning! Running on Battery Backup Power..?

I just got my first Battery Backup UPS - a Tripplite ECO750UPS. Connects to my Mac Pro with a USB cable to detect when my Mac shuts down or sleeps, in order to go into Eco "power saving" mode & turn off peripherals.
I've noticed a couple times this warning message popping up seemingly randomly - "Warning! Your computer is now running on battery backup power, save & shut down soon." No idea why. This thread - http://discussions.info.apple.com/message.jspa?messageID=11173663 - offered little help but let me know others are having similar issues.
Running 10.6.4 here, anyone having these problems with previous versions too?
edit: OK I think I have some insight into what is causing this. I know that whenever my air conditioner unit switches on, it causes an electrical dip - the lights noticeably dim for half a second. Each time this has happened ever since I plugged into it, the UPS battery has switched on and the warning has come up on Mac OS. So it's just happening in order to maintain a constant electrical output load.
It's not bad or wrong, it's just a minor annoyance to have the warning come up every time my AC switches on. Is there any way to turn these warnings off?

The hatter wrote:
Your UPS and Mac Pro should not be on the same circuit though.
Your Mac Pro needs 1000VA UPS.
Use the UPS for other equipment in the house or your office, and try to get the A/C on its own circuit. Ideally have an electrician come in, and recommend running a new outlet to your room.
I agree totally with hatter on this. I can share many instances of hd corruption, etc, that were eventually linked back to horrible power sources.
The hundred or so bucks spent to get a dedicated circuit for "computers only" is well worth it in the long run.
Also, please note that many "consumer level" ups don't have voltage monitoring/regulation. They merely trip to battery when it detects a drop.
The higher level ups monitor and regulate voltage to keep any dips from ever reaching the computer.
Be prepared to spend $500 on a good UPS for a prosumer MacPro setup (additional internal drives, large and/or multiple displays, scanners, etc).

EF3124 Power Consumption

I have an aging UPS in a wiring closet supporting a set of EF3124 switches. I am looking to replace the UPS and am trying to size the capacity to the power draw of the switches. All the old documentation I have found does not tell me the basic draw of a switch. Can anyone offer a base power consumption figure?
Thanks

I am not quite sure but I believe the switch has a voltage capacity of 100-240V AC. Most of these Linksys switches operate at 2A rating. Kindly try to see the ampere rating usually printer where the power plug is inserted just to be sure. Knowing the formula for Power:
Power (P) = Voltage X CurrentP
Power (P) = 100 X 2A or 240 X 2A = 200watts – 480watts
It may vary between 200watts to 480watts of power considering the switch is using 2A of current rating.
You might want to try contacting Cisco Tech support to further look into your concern.

IWork not syncing with iCloud Drive on iPad or iPhone with new iOS 8.

I Downloaded on Wednesday (Sept. 17) the new iOS 8 on both my iPhone and iPad. My iWork apps synced fine for two days, but today all my documents disappeared and the iWork apps won't sync with the iCloud Drive. what can I do to get everything syncing with the new iCloud Drive? The photo stream and other programs are syncing fine, just not iWork. Any help to resolve this would be great. Thank you.

stpauli, it sounds like it's you and me in this together. Have you had any luck? I've had a little. I've been working on this for about a month now. Here's what I did:
I deleted all of my documents from my iPad, iTouch, and iCloud. (I tried it without deleting, but it didn't work.)
I completely turned off iCloud on ALL of my devices, even my Mac.
I deleted all files in iTunes for the iWork suite. (Again, I didn't this this would matter, but it didn't work of they were still there.)
I restored both my iPad and iTouch using their most recent back ups.
I switched on iCloud on ALL of my devices again.
When I opened the programs, things seemed to be working again. It worked well for two days, but now it's being funny again
iCloud will not push out to my iPad. If I create or edit on my iPad, it will push up to iCloud just fine, but if I upload a document to iCloud from my Mac, it never shows on my iPad. In fact, I edited a document that was in iCloud using my Mac, and uploaded the file back to iCloud. The updates never showed on my iPad, and when I closed the document, two versions of the same file appeared in iCloud. The one that was uploaded from my Mac is unusable.
This is definitely an iCloud issue. Unfortunately, the nearest Apple store is a four hour plane ride away, and my devices are out of waranty so they want to charge me for help. I hope you're having better luck.

IWork not syncing with iCloud on iPad

Okay, I am having the same problem a lot of people have been having. Namely, my iWork documents are not properly syncing with iCloud. They're stuck on either upload or download. Sometimes, I'll get a document to download, but it immediately begins to upload again, even though I haven't opened it on my iPad. I have tried everything I have found in the forums:
Deleted the documents from iCloud and my iPad, then uploaded to iCloud from my Mac.
Turned off the Documents and Data option in the iCloud menu on my iPad, turned the option back on then restarted the iPad. (I've tried several variations of this option.)
Restored iPad using iTunes.
Has anyone been able to find a definitive solution to this issue?

stpauli, it sounds like it's you and me in this together. Have you had any luck? I've had a little. I've been working on this for about a month now. Here's what I did:
I deleted all of my documents from my iPad, iTouch, and iCloud. (I tried it without deleting, but it didn't work.)
I completely turned off iCloud on ALL of my devices, even my Mac.
I deleted all files in iTunes for the iWork suite. (Again, I didn't this this would matter, but it didn't work of they were still there.)
I restored both my iPad and iTouch using their most recent back ups.
I switched on iCloud on ALL of my devices again.
When I opened the programs, things seemed to be working again. It worked well for two days, but now it's being funny again
iCloud will not push out to my iPad. If I create or edit on my iPad, it will push up to iCloud just fine, but if I upload a document to iCloud from my Mac, it never shows on my iPad. In fact, I edited a document that was in iCloud using my Mac, and uploaded the file back to iCloud. The updates never showed on my iPad, and when I closed the document, two versions of the same file appeared in iCloud. The one that was uploaded from my Mac is unusable.
This is definitely an iCloud issue. Unfortunately, the nearest Apple store is a four hour plane ride away, and my devices are out of waranty so they want to charge me for help. I hope you're having better luck.

Lumia 925 rebooted after cyan update (everything i...

Hi all,
I installed Cyan update less than a week ago (Finland). Everything worked fine, but today my Lumia 925 started to install by itself software updates after which it erased ALL information (pictures, personal software. addressbook etc) from the phone! I also received an SMS from Microsoft congratulating me for buying a Lumia! All the software that is left is the "original" as if I just had purchased the phone.
I logged into my Microsoft account but no information was recovered. I guess this has to do with cyan update.
Can you help me please?!

You should not need to use the software reinstallation tool in this case, simply perform a reset of the phone from Settings, provided the backup option was switched on before the update you will have a backup linked to your Microsoft account, and your contacts at least are automatically sunced with that anyway. Automatic back-ups are normally switched on by defalut.
When the phone starts after the reset, there is an option during the boot-up process that asks if you wish to reinstall an earlier backup. Again, as long as you had all options selected, the resotration would inlude all items from the last back-up.
With regard to the update happening automatically, the phone can (if the setting is switched on) download updates automatically but it is not installed automatically, you would have received a notification on the screen and you would have pressed to install, perhaps this happened at a time when you were preoccupied and you pressed without checking what the notification referred to.
The welcome message is an automated part of the initial boot-up process, even after resets and updates.
If this or any post answers your question, please remember to help others by pressing the 'Accept as solution' button.

Remote office considerations

thanks for the quick reply.
I am planning on setting up a VPN tunnel to the separate location and i would like both locations to be on the same domain. Files will need to be accessible from both locations. We currently use Office 365 and have web based apps which wont be an issue.

Hi
We are currently looking to setup a remote office that will house 20-40 users. I have not setup a remote office before and am looking for advice. In particular what should i be asking the office building manager for example is there existing cabling? Will we have access to the switch closet or is that managed by a 3rd party? Things like this i just want to make sure i am prepared when i meet with the Building manager and my CEO.
Thanks for any advice.
This topic first appeared in the Spiceworks Community

CE520 server teaming?

Hi,
I'm trying to get a Catalyst Express 520G switch to form a team with a server but no traffic is flowing.
If the two ports connecting to the server are set as switch ports you can set up the etherchannel and it shows as up on both ends but I can't get traffic to go over the link.
The server is a OSX 10.6 box so is using LACP bonding and it happily sees the link as up but you can not ping the server. We have similar set ups on 3560 switches which work OK so I'm not sure if it is a limitation of the CE500s or I have the wrong smartport or other setting. Though from the docs the only smartport that can make an etherchannel is the switch one. Any chance of getting a server team role?
Help :-)
Thanks
Nick

Hi,
thanks for the prompt reply.
The 3560 config for one bond is..
benefitz-sw2#sh run int gi 0/1
Building configuration...
Current configuration : 146 bytes
interface GigabitEthernet0/1
description etherchannel link 1
switchport mode access
channel-group 1 mode active
spanning-tree portfast
end
benefitz-sw2#sh run int gi 0/2
Building configuration...
Current configuration : 146 bytes
interface GigabitEthernet0/2
description etherchannel link 1
switchport mode access
channel-group 1 mode active
spanning-tree portfast
end
benefitz-sw2#sh run int po 1
Building configuration...
Current configuration : 55 bytes
interface Port-channel1
switchport mode access
end
benefitz-sw2#
I did some more testing and found I can get the MAC address in the ARP table for the bond but no response on ping or open ports. So maybe the problem is a service order problem so I'll cehck that one out further. Is there anyway to find out exactly how the port is set with the switch smartport setting? I'll read ovr the doc you mention as well.
Thanks
Nick

Power went out during importing to library

Hi everyone. I am currently deployed in Iraq, So the power situation isn't exactly the greatest. I have a pretty good number of songs on my external hard drive (in excess of 65000) so the import process takes a really long time. My Itunes library is stored on another external harddrive (ie. hard drive to hard drive transfer). A lot of the songs are WMA format so the transfer takes even longer because of the conversion. So here is my question... I was in the midst of the transfer (using "add folder to library), the already formatted songs had been transferred and I had been waiting three days for all of the converting to finish in the other songs when the power suddenly went out turning both of my hard drives off. So, of course the conversion process stopped leaving me with half a library imported and no way to tell which ones were moved over and which ones were not converted (without going through by hnd that is- not an option with such an extensive library). Is there a way to contiunue the import/conversion from where I left off? And also, is there a way to prevent this from happening in the future? Thanks for all yor help!

I'm not trying to be smart here but have you heard of an Uninterruptible Power Supply (UPS)?
From Wikipedia, "A UPS is inserted between the source of power (typically commercial utility power) and the load it is protecting. When a power failure or abnormality occurs, the UPS will effectively switch from utility power to its own power source almost instantaneously." See http://en.wikipedia.org/wiki/Uninterruptiblepowersupply
So a UPS will keep your computer going in the event of a power failure, however it can only do that for as long as its batteries last which may not be long enough to complete the iTunes conversion you were in the middle of. At least it would give you the opportunity to gracefully stop the conversion - if that's possible.
With regard to your question about continuing the conversion; I'll leave that to others more knowledgeable about iTunes.
HP Compaq dx6120 P4 2.8 GHz 1GB RAM (BABYJANE) Windows XP iPod : 5G 30GB (BLANCHE) 512MB 1stG Shuffle (BARBARELLA) with QT Pro 7.x

Power, PoE & BTUs

I'm trying to figure the true number of BTU's that a 3750E-48PD-F puts out. Cisco lists in two separate documents that the max BTU/hr for this device is 3939 (http://www.cisco.com/en/US/products/ps7077/products_data_sheet0900aecd805bbe67.html) and 3924 (http://www.cisco.com/en/US/products/ps7077/prod_models_comparison.html).
However, a note found in documentation referencing an 8700W power supply for a 6500 series switch states, "Note: ~90% of PoE power is dissipated at the PoE device and along the cabling and not at the switch closet itself. Plan for cooling capacity for the switch closet accordingly". (http://www.cisco.com/en/US/products/hw/switches/ps708/products_data_sheet0900aecd8059a1ef.html)
If the note on the power supply is correct, then I believe that Cisco's posting of 3939 and/or 3924 BTU/hr is very misleading.
How should the maximum BTU/hr for a 3750E-48PD-F (or any other PoE switch) be figured? Using Cisco's listed maximum BTU/hr or by following the note that states approximately 90% of the power (heat) will be dissipated at the far end?

The maximum power supplied by the Cisco Catalyst 3750-E PoE is 15.4W per port, total PoE power available on the Cisco Catalyst 3750-E with 48 PoE ports would depend on the installed power supply modules in the switch. With a 1150W power supply the 48-port switch can support up to 15.4W of power per port. The pairs 2 and 3 (pins 1, 2, 3, and 6) of the four pairs in Category 3 and 5 cables are used for both the Ethernet data signals and the DC power at the same time. The PD must accept either polarity of power from either pair set. This allows both crossover and straight cables to be used. Only straight cables should be used with the prestandard Cisco PDs.

Cisco 2509 - Software?

Thank you for your time. I recently acquired a 2509 router that I plan to use as a serial device router. My question is, how do you create the virtual com ports on Windows and Linux machines to point to the TCP address:ports in the 2509 router? Is there software or drivers that do this? Or something third-party? Thanks in advance for any advice.
Phil

Phil
Thank you for the clarification. I now understand that you want to connect not to network devices like routers or switches but to connect to other kinds of devices. If they have the async serial interface for management, frequently presented as the 9 pin connector, then it may work using the 2509.
I am still puzzled about part of what you describe when you say:"but the software that is used to communicate with those devices is looking for a com port and not a TCP/IP port.". Is this software on the device to be controlled (the weather station, UPS controller, power switch, etc) or is this software on the device that wants to communicate with them?
I am guessing that this is software on the device that wants to communicate with the weather station etc. If you were to connect a PC directly to the weather station then you would need some peice of software (commonly I see software such as Hyperterm, TeraTerm, or SecureCRT to do this) and that software takes care of the com port manipulation. With the 2509 the com port stuff is done by the 2509 and you do not need special software on the PC. On the 2509 you will connect cables from async interfaces to the devices to be controlled (weather station etc) and you will configure reverse telnet on the 2509 so that you can connect to specific async interfaces. Then your PC connects to the 2509, frequently via telnet but other access may be possible, and executes reverse telnet for the async interface connected to the device that it wants to control (weather station etc). The com port functionality is provided by the 2509.
HTH
Rick

How do I just remove the current update to 3.6.12 and go back to an earlier version as I can not take the continual freeze ups ever few mins.? If this continues I will remove Firefox totally and switch to another browser I can not take this anymore.

I can NOT take the continual freeze ups of my entire browser even worse when updating a page let alone just opening email. I closed the browser and have had to use even just microsoft or Google since this Firefox has gotten so horrible...
I clear my history and my cache so many times a day I can not keep track anymore and that is insane to have to do it as many times as I am even worse that it does not help in the least!
I have used Firefox for years now but if I have to remove it and switch to a different one by the days end I will and I will post in Facebook to all my friends who I had switch to Firefox what and why though some have already just switched to other browsers.

First, that cannot be an iBook G4 as that machine cannot run Snow Leopard let alone Mountain Lion. To run Snow Leopard it has to be an Intel processor, not a G4. What does it show as the Model Identifier in About This Mac, More Info, System Report, Hardware, Model Identifier?
Second, if you have erased the hard drive there should not be remnants of any prior content. Even though Disk Warrior is saying nothing is wrong with the hard drive, it sounds as though there are problems. You may want to consider simply replacing the hard drive so there are no questions about faults. A good source is OWC, http://www.macsales.com where they also have on-line videos showing how to do the replacement.
Third, you could also try again to restart using the Snow Leopard DVD/CD and use Disk Utility on that install disk to erase again, and do it a couple times, then try to install. If it continues to refuse, then it sounds as though there is a fault with the hard drive.

UPS's in switch closets?

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