when this error occurs
we can't see the cdp neighbor and the wireless crash.
we login onto the ap with console , we can see the error log : “Network interrupt loop detected” . last forever
I have a Netgear WNR612 wireless router, which worked fine for a few weeks. Then something happened and I can't keep the connection anymore. It happened right after I used iTunes to update my iPhone, perhaps a coincidence, but I'm mentioning that just in case. Internet still works fine with ethernet cable straight from the computer, only the wireless connection doesn't work. This happened about a month ago and I haven't been at home much to fix the problem. I have turned off and unplugged everything for several days at a time while gone. I get a Network Error message saying, Windows has detected an IP address conflict. I have tried restoring the router back to factory settings and reinstalling the wireless card. I have tried changing the IP address settings both in the Network and Sharing Center and the router admin page. What I think I should do is change the IP address in Command Prompt, but when I type "ipconfig /release", it says "No operation can be performed on Wireless Network Connection 2 while it has its media disconnected" and the same for Local Area Connection. I don't understand what this means, because there is a wireless key in my keyboard and there is a white light (not orange) like there should be. Also in the Network and Sharing Center, I can see that the connections are enabled.
View 14 Replies View RelatedThis is regarding "Client link 2.0" in 3600 AP . It's a cool technology ,no doubt . But i am thinking on how to test in any labsetup . Can any tell me the ways to test the functioning of "Client link" technology with 3600 AP / the CLI commands .etc .?
View 1 Replies View RelatedI noticed that my router 7200 was reboot for a bus error. The error occurred while the system was operational. After the restart the router works properly for more than 6 days.
This is the sh ver:
Cisco IOS Software, 7200 Software (C7200P-IPBASEK9-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1)
Technical Support: [URL]
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Thu 28-Oct-10 22:57 by prod_rel_team
[code].....
Seems that the error "System returned to ROM by bus error at PC 0x2E0BF30, address 0x0" should be a special type of bus error crash is when the crash is caused by a corrupted program counter (PC). The PC value is the location of the instruction which the processor was executing when the bus error occured. In this case, the PC has jumped to the address 0x0 (probably because of a null pointer), but this is not where the instruction is located.
Can I consider this as a processor memory parity errors and wait for a second parity error before I replace anything?
I am having a hard time trying to configure DMVPN with the tunnel being sourced via a loopback interface. All routers are Cisco 886 routers which don't have L3 ports.That is why I used SVI interfaces, and have configured the L2 ports (Fa0, Fa1, etc.) with the command switchport access vlan.The problem is that I am receiving Invalid SPI error's only on the Hub router and I have no clue what could be the problem, because they use exactly the same parameters for IPsec. [code]
View 1 Replies View RelatedI have many WiSM WLC's running 7.0.116.0. One WLC was rebooted few days ago but there was no crash file and nothing in logs say why this issue happened.There was a power problem at the same time the WLC rebooted (some switches and PE's was rebooted as well) but if it is a power issue why only one WLC inside the WiSM rebooted and the other WLC is still working fine with no reboot?I have 5 WiSM modules connected to the same 6500 box, only one WLC was rebooted which indicates a crash but no crash file registered for it.Is there anyway I can find the reason why that WLC was rebooted?
View 6 Replies View RelatedFirst of all i do not have that much know how within this field (Although i work for an ISP)
There seems to be a problem with my DIR-655.
#1. As we speak the router is taking down and setting up the connection about 1-2 times pr. minute! the connection uptime is stuck in a infinite loop: 1.12 sec, 1.13, 1.14 and back to 1.12 sec. It comes back from time to time. but this is the second time this have happened.
[Code].....
I've been digging into some performance issues on a LAN that has a couple of 2960s. The monitoring software I'm using has indicated a high amount of discarded outbound packets (up to 5%). The suggested resolutions were to enable flow control.
My question is does enabling flow control on all ports interrupt network traffic at all? this is a production network so I had already planned on doing it during off hours but also wanted to know if I should be prepared for any significant drop in traffic.
I'm trying to configure an LACP channel trunk between a CatOS C6000 and a Dell PowerConnect.
I use mode active in both sides and it works great.
But, when I connect a Catalyst 3750X to the Dell PowerConnect the channel between C6000 and PWC shutdown:
2013 May 16 09:08:20 CEST +02:00 %SPANTREE-2-CHNMISCFG: STP loop - channel 5/19-20 is disabled in vlan/instance 20
2013 May 16 09:08:20 CEST +02:00 %SPANTREE-2-CHNMISCFG2: BPDU source mac addresses: 00-04-6d-43-a4-e2, 70-ca-9b-27-46-99
I have two 3750Xs for stack, and i want connect a 2960 switch on this stack with port-channel.I connect 2960 G0/1 to 3750X G1/0/24, and 2960 G0/2 to 3750X G2/0/24. [code] i try to config spanning-tree etherchannel guard misconfig, but no use finally, i have to use "no errdisable detect cause all"..i check the cisco.com, and find a information: for this case, channel-group can use mode desirble.but when i try to change the channel-group in 3750X stack, it shows me that: "with pagp enable, desirble mode must config in the same switch".i try to use mode desirble mode in G1/0/23 and G1/0/24 in 3750X stack, it still can not work.i want to know how to solve this problem? not only do "no errdisable detect cause all".
View 11 Replies View Related I have a Dell XPS 8300 desktop. The desktop recently got a virus which caused me to completely reformat the computer. I thought the PC came with a drivers CD but either it did not or I cannot find one. Now that I installed a fresh copy of Windows 7 it will not connect to the internet. I have tried downloading all network drivers, bios drivers and making sure BIOS is enabled but still I am unable to connect to the internet.
What can I do to fix this problem or is there any place that I can purchase the actual drivers CD for my PC so that this does not happen again? I have gone to the drivers and downloads page, put my tag number in and literally downloaded every single driver listed and still it is giving me the "no connection detected" error.
We currently have 8 1242's and they all work fine, however we recently baught one 2nd hand one which was previously connected to a WLC, it lights up fine but it wont detect in IPSU even though the dhcp has assigned an IP to it. I would like to login through the web page to configure it but I am not able to do that either. It responds to ping fine though. So I no longer wont it be a LAP, so I tried to console in, to run flash_init etc. but when I try and give the <ESC> command (during the flash loader) it just carries on and ignores all input. I have used the correct settings Baud rate 9600, no parity, no flow control , databits 8, etc. but nothing happens it just goes through the boot and then asks me to press enter to input. i can then browse the directories and rename files. but I just cant get it to holt the loader so I can reset, I tried rename of config.txt and env_vars but that has't worked either. It keeps stating that it is looking for LWAPP/CAPWAP but unfortunately we don't have a WLC Is there another way I can reset it or is there some magic way in whic I can send the ESC command.
View 4 Replies View RelatedMy brother has an HP G60 from 2009 with windows 7 home premium and 64 bit operating system. Whenever he turns it on and connects it to the internet, the whole network crashes. My xbox, ipod, laptop, and the main desktop (Which we also just changed to a Dell one.)downstairs all cannot connect to the internet. This lasts from anywhere between 2 and 15 minutes and it continues to crash the internet in about 15 minute intervals as long as his computer is connected to the internet. No other devices in the house cause this as I can have all of my stuff connected and nothing happens. We have a Linksys WRT110 router but I don't think that or the modem is the problem as we have changed both multiple times. This has been happening for about a year ever since my oldest brother gave my brother the laptop.
View 10 Replies View RelatedRecently I faced 1 issue in MLS 6509.MLS had all Gig modules in slots 6,7,8 taking System detected CRC error rate on port ASIC data bus exceed fatal threshold, ("System detected CRC error rate on port ASIC data bus exceed fatal threshold".) causing the module reset by the SUP. After this active SUP causing it to failover the standby. This process was continuing every few minutes resulting in the SUPs on MLS rolling.what could be the issue for Sup rolling reset?
View 1 Replies View Relatedmy network connection has not been detected suddenly....[URL]
Windows IP Configuration
Host Name................................:user
Primary Dns Suffix.......................:
Node Type..................................:Mixed
IP Routing Ensbled......................:No
WINS Proxy Enabled.....................:No
[code]....
a spare PC I have will not connect to the network via wireless, it is running XP Pro SP3, and is using a Xycel G-202 wireless adapter. It is seeing my Sky router, and trying to obtain an IP address, but failing every time.
I am using WPA-PSK and the key I am inputting is correct, my phone connects to the network with no problems.
I have had this problem now for a couple of weeks, can't seem to find a solution, even after trying all sorts of things I have seen on the web. I can not seem to get the wireless internet to work on my computer. The problem started a while ago and since then I've actually formatted my hard drive and reloaded Windows XP and everything else back onto my computer. I ahve tried connecting to the wireless at home and at work and neither is working. My computer can see the networks when but can not connect to them. I used to have no problem connecting to my home network, I have not ever connected tot he one at work, just thought I'd try it when I couldn't get it to work at home.
1. Updating my LAN driver (I've tried numerous ones and the one that works best is the one that came with my windows XP)
2. Ran both Spybot and AVG to check on spyware/malware/virus and there was not a single thing on either one.
3. Tried many combinations of setup configurations with my home wireless set up. It is a password protected hookup that I have never had problems with before.So in seeing several posts on here I have the following information from my CMD
C:>IPConfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : gateway-ta06zkr
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
[code].....
I'm having problems getting the WUSB54G v2 adapter work with the WRT160N router (firmware 2.0.03). I'm running Vista Home Premium SP1. My wireless network is not detected by the WUSB54G and is not on the list of wireless networks I can connect to. I'm also having trouble connecting to WUSB54GP ver 4. The network is detected, but I can't connect.
Change the Beacon Interval to 75
Change the Fragmentation Threshold to 2304
Change the RTS Threshold to 2307
Now the WUSB54GP ver 4. is working perfectly, but the WUSB54G v2 still can't detect the network. I'm also running a PS3 and a laptop, which work perfectly with the WRT160N router.Also, the WUSB54G v2 system works just fine with my old router (WRTP54G).
I new to the linux version of os, i had recently installed Ubuntu 10.10 on my dell laptop Inspiron 15R N5010 model. The wireless networks are getting detected in the menu. even though its working fine in wired and mobile net cases. I think that the wireless driver is missing.
View 1 Replies View RelatedWe have a NETGEAR ProSafe™ 802.11g Wireless VPN Firewall FVG318 set up at work with a static IP so we can do a Voice Over IP from our sales office.Everything works fine until I plug in a computer that is connected to our digital printer, then the PC stays on the internet for a while, then crashes the connection.Once I plug in the PC to the network, the rest of the network has issues.
View 4 Replies View RelatedMy wireless network card is not detected by the system and wont show up in device manager. the green light on the back of the card is still blinking, so it is getting power through the mobo. Wireless network card was working perfectly before swapping out my video card for a new 7850 and swapping out my RAM modules. The drivers are Up to date. I'm running windows 7 and the wireless network card is an atheros AR5005GS.
I don't understand why installing new RAM and a new video card would affect this?? I didn't touch that card, and have double checked it is still seated properly.
I have no other way currently to connect this computer to the Internet.
just brought this router model #wrt120n and can't get setup disk to install because it says i have no ethernet port
View 1 Replies View RelatedI don't do a lot of networking however during a cisco lesson the other day my lecturer briefly touched upon loop-back tests, would it be okay for somebody to very imply sum up exactly what loop-back tests do in a couple of lines and how they are carried out? (not in detail, so literally for example - a wire is put in from one end of the network to the other etc.) I don't really understand all the different wiring types etc.
View 4 Replies View RelatedHow can I identify loop or virus in the network? is there any command to find out these ?
View 2 Replies View RelatedSince yesterday evening, my Toshiba Satellite Laptop (L505D-ES5025) hasn't been able to register my wireless network, though it registered it perfectly fine yesterday morning. I can only detect the local area connection, and can only connect to the internet via the ethernet cable (which is what I'm using right now).Even when I go to the "Change Adapter Settings" from Control Panel, it won't detect the wireless network that I use. The other computers/laptops in the house work, but this one can't regiester to it, even though it's the closest to the router. When I troubleshoot the problem, the only solution is to use the ethernet cable, but I can't depend on it since the whole point of using a wireless connection is to go wireless.I have tried the Control Panel solution of going to the device manager, but I can't find the wireless network from there. This Toshiba computer also doesn't have a physical WLAN button; rather hot keys are used (though when I use this, it doesn't anyways).I also tried to find the drivers for it to update, but those won't either update, or they do update but nothing happens. In other words, I can't do anything because my laptop can't find ANY networks whatsoever except for the one that is found after I connect it to the ethernet cable.My OS is Windows 7, 64-bit Home Premium.
View 12 Replies View Relatedi have my E1000 network detected by laptop and devices but can't connect to Internet. The E1000 is connected to Cisco 2100 modem and I can connect to Internet if I plug my laptop/PC directly to Cisco 2100 modem.
View 2 Replies View RelatedBoth the iPod and iPhone were on the network and working and now neither is on and don't detect the network at all. Have turned off and on both devices as well as the router to no avail. My mini Mac is up and running and has been all day.
View 1 Replies View Relatedhow to resolve high cpu to interrupt.I am getting lots of input que drops in all vlan interfaces.I have enabled multicast in all vlan interfaces. System image file is "sup-bootdisk:s72033-advipservicesk9_wan-mz.122-33.SXI4a.bin"
View 2 Replies View RelatedI am in charge of taking care our small office network (about 25 PC's) and encountered a problem the other day. I got a call that nothing network related was working. I went to look at the switches/router and everything appeared fine. After some troubleshooting i found if i unplugged the switch and connected directly the the router everything worked prefect. Reconnected the switch, network goes down again. I assumed it was the switch at first but then did a walk around and a laptop was in a weird frozen state. I unhooked the network cable and everything started working away like it should.
View 9 Replies View RelatedWe have next router:
spb-bg3#sh inventory
NAME: "CISCO7604", DESCR: "Cisco Systems Cisco 7600 4-slot Chassis System"
PID: CISCO7604 , VID: V01, SN: FOX1523H7E8
[Code]....
I am dealing with three office networks, all three have the same conflict. The error messages I get all say there are two devices assigning ip addresses. As soon as I get the computers communicating with each other, two seem to crash overnight, I suspect due to the conflict. Here is the rundown on the networks. All are windows networks - the problem I am having is file sharing mostly and printing.
Network A: server OS is XP Pro - SP3, four workstations, XP Pro-SP3, Windstream DSL and Netgear Router. I have already bridged the router on this one, and it did not correct the conflict.
Network B: Server OS - Windows7 SP1, three workstations all XP Pro SP3, ISP is Clear (formerly clearwire). Router is the old wired Linksys befsr41 v4.
Network C: server OS - XP Pro SP2, ISP - Clear, three workstations - two are XP ProSP3 one is XP Pro SP2. I have had less trouble with this network, but I suspect the conflict exists here as well.
I have tried to get a static IP address from Windstream where I have had my worst problems, but cannot seem to get one. I suspect we have the least expensive service option possible, and are possibly using a service designed for home use as opposed to business, as someone told me recently that getting a static IP address can be expensive. Is this true? Currently all networks have DHCP enabled, and the routers are set up to use DHCP. My thoughts were to disable DHCP and assign ip addresses manually.
About a week ago, our network started to experience complete failure.
Our Equipment:
Router: Netgear FVS336.xxx
Switch: Dlink DES-1024D (we have 6 of these switches in our building)
Wifi Routers: Dlink DIR-601, Linksys wrt54g, wrt54gv2
Computersservers: 40x
Copiersfax: 5x
Wireless clients: (iphones, laptops) at least 30
All has been working together in harmony for many years.Fast forward to last week when my hell began with intermittent crashes.Not sure what's causing the problem.When it happens, everybody loses their internet, the ability to communicate over the network; ping tests won't respond to anything (including the router) that exists on the lan, even with a static IP against other statics.In visually inspection of the switches and router, they seem to be happily blinking away with no apparent issue (visually).The only way I've been able to fix the problem is by power cycling the router.About 1 second after doing that, we're back in action for 2-6 hours (very unpredictable).I never had to power cycle any other devices)
Steps I've taken in troubleshootingeliminating potential culprits:
Replaced the router with a spare (new) FVS318G
Replaced the power supply for the router (suspected because problem remained after router swap)
Replaced cable going from router to lan switch
Removed linksys wifi router from network (the router had needed power cycling weekly and was old. So I unplugged it)
Removed Dlink wifi router from network (I hate dlink routers, so removed it).I'm at a loss.
So the SG300's have STP on them and prevent network loops when other switches on the network also support STP too. However, if someone plugs in a non-managed switch that doesn't support STP with a network loop, is there anything within the SG300 switches to isolate and/or prevent that from happening?
(I currently have port mirroring turned on for one port and a network sniffer attached awaiting the incident to happen again).
