Power Surge Affected Only One PC In Wireless Network?
Feb 5, 2013
There was short power surge ( for a second only), and after that my laptop lost connection with home network. To be more specific, only one laptop lost connection, two other and iPad have no problem to connect. I brought laptop to the store where I purchased it 12 days ago, and there it worked. Brought it home - same thing, it can not connect to home network, and keep getting message that password is incorect ( and is not). Finally, I replaced laptop for completely new one, ant sill have the same problem: can not connect to home network a nd when brought to the store -it works. Of course I did that drill with connect/disconnect modem, router, pc's more than one time.
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Jul 13, 2011
After a quick power surge forced my desktop to reboot, it can't connect to my wireless network, even though everything else can. It may have been applying windows updates at the time of the surge.
Earlier today I shut down my computer to apply some windows updates. A few minutes after it rebooted a power surge knocked it out for an instant and the computer rebooted again. I don't know if it was done applying the updates but for some reason it can no longer connect to a wireless network. It keeps saying "unknown reason" when it fails to connect. I think I had a static IP attached to it.
My iPhone and iPad can still connect to this network, but this one computer can't. It's a desktop running Windows Vista Home Premium with a broadcom adapter added to it. It's too far away to connect to any wired connection. My router is a Netgear WGT624 v4.
I don't think I can post any IPconfig information here because I'm forced to type this on an iPhone.
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Aug 19, 2012
I recently upgraded to an EA3500 router using Cisco Cloud Connect after my E2700 series router was damaged after a power surge came through coaxial cabling to my house and was transfered to the router over ethernet.
I have my EA3500 running both 2.4 and 5 GHZ networks running as 802.11n only and a Lynksis WRT54GS router for 802.11g network devices that are left in my house connected to the EA3500 over ethernet.
Since upgrading to the EA3500 - I have noticed that I am having some trouble with my internet connection dropping randomly that was not present when I was running the E2700 series using the same configuration.
I have not been able to get my full internet speeds as promised by Comcast over wireless (30 Mbps - using direct ethernet I can get upto 40Mbps). My two printers connected via ethernet through an ethernet bridge are being stubborn, the IP address constantly changes. I have not changed any settings in the router other than the network name and setting it up for dual band configuration.
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Jan 27, 2012
recently a Cisco 3560E switch went down due to a power surge. the switch is getting power but i am only seeing the below message continously. it is keep on rebooting. i try to reset to factory settings/ safe boot nothing worked. is there any way i can bring the switch up or it is hardware failure.Using driver version 1 for media type 2Base ethernet MAC Address: 00:23:33:af:1b:00Xmodem file system is available.The password-recovery mechanism is enabled.Using driver version 1 for media type 2Base ethernet MAC Address: 00:23:33:af:1b:00Xmodem file system is available.The password-recovery mechanism is enabled.
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Feb 23, 2012
Is WRTU54G-TM affected by Wi-Fi Protected Setup security vulnerability? Device is not mentioned on this list: url..If yes, can it be fixed or is device bricked?
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Jun 10, 2011
I've got a Linksys E2000 router and a Brother MFC-7840W wireless printer and they don't seem to want to play nice together. The set-up process was fine and I can usually print wireless without a problem, but every so often I'll try to print and my computer will say that the printer is offline. Other computers on my network also show it as offline. The printer confirms it has an IP address, but even after power cycling it won't be picked up by my machines. I've even tried a full reset of the printer and re-configured it, at which point it is able to successfully obtain an IP address, but it still shows as offline on my PCs.
The only solution I have found is to powercycle the router. This always works. Now that's not a terribly inconvenient workaround most of the time, so I've been doing that for a few months now. It obviously implicates the router as the point of failure, but wireless internet access is not affected when the printer appears to be offline, so obviously some packets are getting through normally.
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Dec 22, 2010
1. Our Motorola SB6120 popped out of existence today; FYI, this was plugged into a brand new APC UPS unit (which does not have coax/cable suppression features).
2. Previously (past days), one interesting thing I have noticed is excessive amounts of distasteful electrostatic shock when working in the closet and touching the metal bearings of the cable & wires. Is the cable not grounded properly, and is it the cause of #1?
Recommend me a surge protector/suppressor strictly for cable (do not need outlets/ethernet/rj45/etc).
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Feb 24, 2013
Will a MTU mismatch in Nexus 7000 affect the performance ? I have a nexus 7000 at one end with MTU set to 1500 and Melanox bx5020(Storage switch) at other end with MTU set to 9600. Storage team is complaining about performance issue related to slowness.Does MTU mismatch plays any role in slowness ??
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Jul 21, 2011
I keep getting alerts from our WCS stating that our 1252s are drawing low power. Now I am aware that they require enhanced PoE (up to 20W) but as we only have standard PoE in that building we purchased the 1252 series power injectors to go with them.
However, even with the correct power injectors the WCS still reports the draws low power error.
Is this a bug? Running WCS 7.0.172 at the moment.
Forgot to say we are using the PWR-INJ4 and the injector status is enabled and you see the injector MAC address when you drill in to the AP status.
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Apr 8, 2012
this note is from the 5508 controller config manual, does this apply to 1040 access points in a mesh network?
Note:The recommended power source for MAPs is either a power supply or power injector. PoE is not a recommended power source for MAPs.
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Nov 25, 2011
Our wireless network has started to drop out periodically. If we pull power and restore, the network immediately comes back up on all our our devices. We have the WRT54G, and we have 2 PCs, 2 Macs, and 3 iPhones, and a wired home phone. Normally there are not this many devices connected, but with everyone home for Thanksgiving and all these devices on the network we have started to see this issue.
Are there simply more devices than the router can handle? Is one of the devices crashing the network for everyone? What typically will cause something like this?
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Jul 24, 2011
So I have an WRVS4400N V2 and just got a new laptop with an Intel 6230 Wifi card in it and have an odd problem.While the laptop is on battery power the network gets massive packet loss.
I don't know what to do.Laptop manufacture says its AP but AP worked fine with old laptop and works fine when laptop is on power and all other devices seem to be fine with the exception of my Xbox 360 that wont connect if I have it on WPA2 but I will post another thread for that.
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Jun 9, 2013
I am receiving the following error on 3750 stack switches. have already verified the power status and found ok.
IOS used: Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
211540: Jun 10 10:45:17.935 UTC: %PLATFORM_STACKPOWER-4-UNBALANCED_PS: Switch 4's power stack has unbalanced power supplies
211541: Jun 10 10:46:18.045 UTC: %PLATFORM_STACKPOWER-4-UNBALANCED_PS:
[Code]....
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Sep 4, 2012
After stacking two 3750X switches, with four equal power-supply's, with StackWise and PowerStack , still got the next message every few hours %PLATFORM_ENV-1-FRU_PS_ACCESS: FRU Power Supply is not responding (gn4m-rt1p08-04-2)( note that the message revers to the second switch in the stack ) although the stackwise and powerstack on the switches is oke and are working correctly. !
Config : Stack-power in power-sharing mode/strict With CLI on the switch : All the power supply's and stack-power details, prio look OK.
Only: LMS prime /inventory/cisco-view/configure/power supply status result : some power supply's are marked as disabled.with the command > power supply 2 slot a off/on I manage to get the status back to "normal", but after a few hours some power supply's are again marked as "disabled".
Looks like SNMP en IOS difference from opinion.
Hardware
WS-C3750X-24S-S
C3KX-PWR-350WAC
Software
15.0(2)SE
C3750E-UNIVERSALK9-M
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Apr 14, 2013
We have two switches of the same model (WS-C3560-48PS-S) that are not providing PoE. I'm trying to remotely determine what the cause of the issue is.
Here is some output.
Hostname#show power inlineAvailable:0.0(w) Used:0.0(w) Remaining:0.0(w)
Interface Admin Oper Power Device Class Max (Watts)--------- ------ ---------- ------- ------------------- ----- ----Fa0/1 auto off 0.0 n/a n/a 15.4Fa0/2 auto off 0.0 n/a n/a 15.4Fa0/3 auto off 0.0 n/a n/a 15.4Fa0/4 auto off 0.0 n/a n/a 15.4Fa0/5 auto off 0.0 n/a n/a 15.4Fa0/6 auto off 0.0 n/a n/a 15.4Fa0/7 auto off 0.0 n/a n/a 15.4Fa0/8 auto off 0.0 n/a n/a 15.4Fa0/9 auto off 0.0 n/a n/a 15.4Fa0/10 auto off 0.0 n/a n/a 15.4(code)
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Feb 28, 2011
I have a 6500 chassis with 2 power supplies. At the moment I am using the default configuration:
power-redudancy mode redundant
The problem is that an inserted module is in "power deny" state due too insufficient power.
I know, that It's not a good idea to change into combined mode (loss of redundancy), but my customers requested this anyway.
So I will change to combined mode. So here's the 1 million dollar question: "Which modules will go into power deny, if one of my power supplies fails?"
The 6500 config guide states:
"Power supply is removed withredundancy disabled
• System log and syslog messages are generated.
• System power is decreased to the power capability of one supply.
• If there is not enough power for all previously powered-up modules, some modulesare powered down and marked as power-deny in the show power oper state field."
Well, do you know if there's any way to configure some kind of priority? E.g. I definetly don't want by 10Gig Module or WiSM module to be in power deny. Can i statically make sure, those module will be powered on for sure? Like: "power enable module slot_number" How is this calculated? Or is random?
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Apr 4, 2012
In a stand alone 3750x switch configuration, can the secondary power supply only act as a redundant power supply (active/standby), or can it become a "pool" of power similar to power sharing mode for StackPower (somewhat active/active)? I understand there is no stack involved here but I'm curious if this functionality is possible.
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Mar 3, 2013
how can I enable an automatic power-on after a power failure on an ASA 5512-X?
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Dec 5, 2012
how can I enable an automatic power-on after a power failure on an ASA 5512-X?
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Sep 26, 2012
I work in IT and I'm trying to install a network camera for a client which requires power over Ethernet. How do I verify that there is not PoE available
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Mar 28, 2011
Obviously you do not want your cat6 lines running too close to your power lines especially when in parallel. The question though is how close can it be without causing interference?In my situation the wall I want to connect my main router to has a power outlet in the middle of it which honestly is where I would have preferred my network ports. Will I be OK if I run my cat6 in the wall channel directly next to the channel that contains the power line? It would be a standard U.S. interior wall residential power line. I should be able to get from 12 to 24 inches of distance between my cat6 and power line while still keeping my network outlet in a semi-central location.
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Sep 21, 2011
Dell pc studio 450s will not recognize network connection after power outage. Have run diagnostic fix multiple times but to avail. I have roadrunner cable broadband connected to voyage router and then to wireless router. Wireless router and vonage works (as evidenced by this email using iPad)
Have already reset everything multiple times including unplugging modem and pc.
From what I understand the pc is getting gatewayaddress or does not recognize.
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Sep 29, 2011
Missing local area connection icon in network connection after power failure?
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Nov 23, 2012
My situation is as follows: A modem in the hallway closet with an internet connection via a coax cable. A living room with an i Mac and a Philips PFL9604 TV connected to the wireless network. The wireless network is provided by a new TP- Link TL-WR1043ND router which is setup next to the modem.
I would like to do the following:
Stream content such as HD movies, shows etc from the i Mac to the TV. Use the TV to watch missed shows with the apps on the TV via internet. Make use of the internet speed upgrade (75 - 150 m bit/s) which will come in a few months. However the signal of the router currently isn't strong enough to maintain a stable connection since it's too far away. The distance from the router to the TV and the i Mac is 12 meters and 6 meters with a wall in between as well. Now I can't move the modem from the hallway closet else the signal to the modem will be too weak nor can I wire an utp cable from the hallway to the living room and put the router there.
I have come up with two possible options now:
Use power line adapters by plugging one into the hallway socket and one in the living room so I can put the router there.
I currently have these power line adapter to try out, however my internet connection occasionally drops while using these adapters. Take the old WRT54GL router or a second TP- Link TL-WR1043ND and use WDS to create 1 network and have good coverage in the living room. The i Mac and TV can then be connected via Ethernet cables to the second router if necessary. I assume it would be best to place the second router closest to the first one for the strongest signal.
The second options seems the best to me as the power line adapters don't seem very promising based on my experience so far. I would like to know if connecting two routers is a viable method to obtain good and stable coverage in the living room?
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Dec 4, 2012
I have a WAP4410N that stopped powering on with PoE. The PoE light comes on but the Power and Ethernet light remain off. The link light comes on the port on the switch. I have tried multiple switch ports and tried a different switch.
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Jun 6, 2011
how to power a WAP200E. In the datasheet it mentions it supports POE, however the customer does not have a POE switch and for one WAP220E is not willing to purchase.
What other options do we have? Is there a power supply for this AP?
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Jun 5, 2012
I bought a Cisco WAP121 and a Cisco AIR-PWRINJ3 so I could use the PoE from the AIR-PWRINJ3 to power the WAP121. Unfortunately the setup is not working, the WAP121 shows no sign of getting power even though the AIR-PWRINJ3 indicates it has power. Is this setup just not supported or do I have defective parts?
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Apr 28, 2012
Everything was working fine. Changed Nothing on the router. Goes out and now wont broadcast a wireless signal, cant manually reset the router, or get into the settings with 192.168.1.1
Currently I am wired through it with my desktop and its working, but not much else.
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Sep 3, 2012
I have a cisco wireless power injector for Aironet 1250 but I called Cisco and was told this can't be found in the system.
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Oct 25, 2012
I live on a college campus and we had a brief power outage today. The power is back, and we (there's 4 of us in the apartment), can only connect to the internet via ethernet cable. All of our computers show wifi as connected but no internet access, the same goes for our cell phones. We've tried resetting the modem, reconfiguring and everything.Still nothing works. The router is a JCG 108 M.
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Jun 28, 2011
I need a power Injector compatible for WAP 4410N.
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Oct 20, 2011
Do I need to plug in AP 1262 into a PoE switch or external power adapter before can power on? How about LAP 1262? Do I need PoE switch as well?
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Dec 12, 2012
i have AIR-BR1310G that came with its proper power injector AIR-PWRINJ-BLR2 can this power injector be feed using a POE switch or do i have to use the 48v power adapter
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