Cisco Wireless :: Mass 10 Total Units Failed In Groups Of 2-4 With AIR-LAP1131 / POE
Apr 16, 2013
We had several AIR-LAP1131AG-N-K9 devices have a peculiar failure recently.About 10 total units failed in groups of 2-4. Each group was on the same 3560 switch, and they failed at the same time.Now all but one of the units will power and work properly with an inline power injector. But they are either intermittent or not at all when connected to the POE Switch. Even when I use a 3ft patch cable to connect directly to the switch. I have certified the cable and they do the same no matter which port or cable used. 'show inline power' command will show these failed units as 'Iee PD'v
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Apr 19, 2013
The network consists of 133 RAPs/MAPs/1131 APs and all joined the WLC. When I check the 802.11 a/n radio tab, I see only 129 APs and the 802.11 b/g/n tab I see 133 APs. I found out that 4 LAP1131 is not showing in the 802.11 a/n tab. I tried resetting the AP thru the WLC and still the don't see it in the 802.11 a/n tab.
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Dec 12, 2011
I created some User Defined Groups in LMS 4.1, now I want to apply certain fault notification groups to Event Sets.
Unfortunately the Groups I configured are not in the Group Selector of the Fault Notification Group: Admin > Network > Notification and Action Settings > Fault Notification Group
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Aug 26, 2012
Is it possible to assign a single ssid to multiple interface groups by assigning the ssid to multiple AP groups?
I have buildings geographically dispersed that are configured with multiple vlans in interface groups so that I can maintain an addressing scheme of dhcp assigned addresses per building. Each building is also further grouped as AP groups. I'd like to know if by assigning the same wlan ssid to each of the AP groups, will I maintain addressing integrity for each building? I'm thinking it will work.
Do the buildings have to be outside AP range of each other to avoid problems?
5508 controller
7.2.110.0 code
6 buildings
6 interface groups
1 ssid
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Sep 20, 2011
Installed 4 AP541N units in a client site and they've now come back with reports of issues with the setup. I went out there today to take a look and the issue is primarily that randomly during the day, clients will loose access to DHCP. The client authenticates fine (we see success logs in the Windows 2008 RADIUS event logs) but doesn't manage to get an ip address.To sum up the things with the current setup:
- Running version 2.0 Code on the AP541N's.
- Using Windows 2008 for NPS (RADIUS) and DHCP.
- Cisco Catalyst Switching in the back end.
Things tend to work fine in the morning. It's as the site hits midday that we start seeing issues.In looking at the issue I've come across a number of posts in regards to issues with DHCP and these units. One item that was suggested to switch off Mutlicast / Broadcast limiting on the Advanced Settings. What's weird with this is that if I do disable this option, RADIUS authentication stops working entirely. Switch limiting back on and RADIUS works again. I've confirmed this with Network Monitor running on the RADIUS Server.
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Jul 22, 2011
A couple of questions about the AP541N:
1. How to get these installed and working properly, especially in a clustered environment? I have read so many comments about slow performance, no performace, bad coverage, etc... They sound like the perfect product for my intended use if they actually work as advertised.
2. what is the installation requirements for multiple units? (What is the minimum/maximum distance between units? How many units are needed for a certain area?
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Jun 26, 2012
I have a WLC 5508 with LWAP 1242 with wireless bridges connected to the APs I cannot get DHCP to pass through the bridge to the PC connected to the bridge.
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Jun 23, 2011
I bought an e4200 about 2 months ago. It worked perfectly for 3 weeks. Then all of the sudden, the 5ghz connection started dropping. Then it's disappeared completely and it would not show up in a network search. Then the 2.4 ghz started going crazy. I reset it completely, that didn't work. I let it sit for half a day, nothing. I sent it back to newegg and got a replacement. When the 2nd one came in, it worked fine until the next day. 5ghz cut out. I called linksys support and they were no luck. I reflashed to 1001 firmware and it mysteriously came back to normal. It was working perfect until today. 3 weeks later. 5ghz went out, and never came back. I reflashed 1001, nothing. Reset, nothing. Flashed the new 1002 firmware, nothing. 2.4ghz still kind of works, but the speed is barely 5mbps. I'm at a freaking loss right now. This was the best performing router I have tried, of all the top models available right now
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Nov 23, 2011
I have both WAG320N and E4200, they are currently linked (wired) together as a bridge (it is not ideal or necessary, but lets move pass this point) and is working fine. But I'd like to place the E4200 on a floor above (which cabling is not an option) and is wondering how the two units can be bridged wirelessly while status quo on everything else.
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Mar 27, 2013
I just installed 2 new units and neither will connect to a new HP gigabit switch - no link light, other devices can connect to the switch OK. Their gigabit ethernet settings are set to auto for duplex and speed. I also tried forcing one of them to full duplex and 1000 Mbps which didn't work either. They're both powered by POE injectors. If I connect them to a 10/100 switch they work fine.
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Jul 29, 2011
I was wondering if I had a Wireless N router, can it do 300Mbit per connection, or can it do 300Mbit transfer across all connections?
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Dec 9, 2011
When it comes to networking and require some advice on setting up my wrt61on router with my airport express. I have managed to get it all connected up and working but am suffering frequent dropouts while streaming music. I have done a little reading and have tried changing a few settings on the router but have found no improvement. My set up is as follows.
-Modem connected to WRT610N Router
-Desktop Computer connected to network via wusb600N dongle
-Airport Express connected via wif
-Using Iphone 4 as remote
Is there a way where i can set up the airport express on a total different frequency to everything else in the house i.e laptops iphones etc to prevent these cutouts.
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Mar 10, 2011
Product: Linksys Wireless-G Broadband Router WRT54G
Version: 6
Firmware: Has Been Updated
I am directly connected to my router. Lately, I have been receiving high latency spikes and total loss of internet. The problem must be related to my router, because when I connect to the internet through my modem I don't have this problem.
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Sep 8, 2011
I have a pair of SRP527W-U units, which each connect to a seperate ISP by ADSL2+I am attempting to use each simulatenously as follows:ISP-A via CiscoA for general traffic, and to run HTTP server X,ISP-B via CiscoB to run HTTP server Y,HTTP servers X and Y are on one machine, but binding to two seperate IP addresses eg x.x.x.3 and x.x.x.4,In a situation like this, I would normally configure CiscoA and CiscoB with x.x.x.1 and x.x.x.2 respectively,CiscoA would run DMZ to x.x.x.3 and CiscoB DMZ to x.x.x.4,The server would use x.x.x.1 as the default route.Then I would set CiscoA to have a policy route catching source address x.x.x.4 and sending it to next-hop/gateway x.x.x..
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Apr 16, 2013
How many C3K-PWR-750WAC units in PWR-RPS2300 do I need for router CISCO2921-HSEC+/K9?
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Dec 7, 2011
I am trying out a DAP-1513 unit but there is no forum section for this? My question seems to be general and might cover the other models also. Do the DHCP request, from the attached LAN devices on the DAP, get pass to the DHCP "server?"
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Mar 29, 2013
I have a situation where are three units stack of 3750 which i need to upgrade.The flash memory on all the switches are the same which is 57.4 MB. The tar file which I was trying to use was 21 MB.
Now the trouble is that the client wanted to do upgrade without overwriting the existing file. I tried doing automatic upgrade using tar file. It started all OK with downloading the tar file successfully on the master flash. but then it failed thereafter. It did not show any error on my telnet screen however I could see errors (Error code 10054) on the TFTP server regarding the download of the same file on the flash ( i am guessing this was the flash of the next unit in the stack).
" You need to make sure you have sufficient space available in the Flash of the master switch. The master switch should have twice the amount of space of the .tar image file size. This space is needed to store the .tar file as well as to store the content of the .tar file that you extract."
The tar file being 21 MB and looking at the dir below I dont think it is possible use this option since I dont have that much space. I have 34 MB free which according to the doco should be atleast 42 MB.what is the best option I have with me given the constraints that I cannot upgrade the flash at this stage.
1. Could I use the manual upgrade (using bin file) if that can do the needful,
2. Do I simple try automatic upgrade using tar file but with overwriting option so it overwrites the existing image on the flash.Could i take a copy of the existing image on the tftp server using "archive upload-sw" command?
3. Is there a way I could upgrade without transferring image onto the flash and instead using tftp for the stack switch to boot from?
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Jul 28, 2011
How to identify the OID to show the “total MAC Addresses In Use” on a 6509, This is the value we can see from a show mac-address counters, and I want our Solarwinds system to poll for it.
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Apr 9, 2013
So I have two Seagate BlackArmor 400 NAS units and I want to transfer a lot of files from one to the other.I can access both through a browser GUI and also are the shares I want to transfer between available in my Network Location in Windows 7. I guess that's the CIFS thing there but not sure.However if I just drag and drop or use something like TeraCopy the speed is very bad. It's like the file actually transfers through my PC which is wireless and not getting great speed.
The Seagate blackarmor has a download manager that supports http and ftp and the share is ftp enabled but I have no idea how it's url would be on local network ( there is no DNS setup for the FTP but it's marked as enabled ). transfer the files between the 2 NAS system without having a PC in between and getting good speed.
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Feb 15, 2012
We had a number of Linksys SRW2048 / SRW2024 switches that had the "bloated capacitor issue" or "bad capacitor issue".These units would basically disconnect/connect their ports.Applications would sometimes crash on workstations.These were all located at different client sites.These were replaced under warranty with the SG300-52 units.When we implemented the SG300-52 units at several sites we noticed the the logs showed disconnect/ connects.We were not seeing apps crash.Support advised they were not aware of any issues.We did a firmware update that was available that made no difference. (1.1.0.73)6 months have now passed.
We noticed at our site very poor throughput one night doing a very heavy file copy data transfer between two computers.It actually ground all other computers on the network to a halt.We inspected the switch.It had "all lights flashing".We thought this strange and shutdown the whole system. Problem still existed.Power cycled the switch. Problem still existed.Noticed their was a new firmware update. (1.1.2.0)We implemented this.The lights on the switch stopped "all lights flashing".Throughput was back to normal. (ie didnt grind all other computers to a halt)
We then had a second site complain of similar issues.Heavy throughput between two computers bought all other computers to a grinding halt.Lights were "all flashing" on switch.Workstation would disconnect/connect in a loop during heavy file copy.We implemented the firmware update thinking this would solve the issue.It now still has the issue of disconnect/connect however and apps sometime crash.We have now replaced the switch with a HP 2510-48G.This is working properly.I have now since been to other sites that also have these SG300 switches and notice the "all flashing lights".
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Mar 22, 2011
I have three pairs of ASA5510 firewalls, each pair configured as a failover pair. When each pair boots up, even if I boot up the primary first, when they are both up and the primary/active syncs to the secondary/standby, the primary always switches to standby and the secondary thus becomes active.
What would cause this? It happens on all three pairs. Does failover look for the highest ID or IP address to determine which of the pair will be active?
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Oct 9, 2011
We have a pair of ASA5520 firewalls setup in a very inefficient fashion, and I wish to convert them to an active/passive cluster. Trouble is, there are a number of configuration option I will need to re-implement (VPN tunnels, remote users etc), and trying to capture the configuation with a simple "show running-config" or "show running-config all" or even "show startup-config" doesn't get me things like the pre-shared-key from the VPN configurations - and I don't know them all, so I can't simply re-enter them.Is there any way to get a dump of the running (or startup) config which shows the hidden settings like pre-shared keys and OSPF message digest keys?
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Jul 4, 2011
I have a 48 port 2960 switch with 2 10/100 ports ( fa0/46-47) setup in an etherchannel with a 2950 48 port switch. I am getting total output drops on port fa0/47. [code]
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Dec 15, 2011
We've (an independent school) just bought an SR520 with a view to replacing one of our Draytek 2820s. We need to set up some site-to-site VPN with NAT and the Drayteks won't do it.
I've been trying to configure the SR520 in just the most basic fashion using CCA (3.1) and the CLI but with no success. I can't get a PPP connection with our ISP.
I've tried following the instructions in the software config pdf and also tried replicating the various 'running configs' reported in other posts in this forum to allow connection to a UK ISP, with no success. I don't know how many times I've reset the poor thing to factory defaults.
I have to say that I'm dismayed at how flaky the CCA appears to be. Many of the things I've tried with it simply don't work and often end up in it hanging. Close to useless in my view.
So instead I've tried to use the CLI which seems a lot more solid but is somewhat impenetrable and there's precious little by way of supporting explanation.
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Jul 27, 2011
Is it possible to increase bandwidth througput on 2951 router if you have 3 WAN connections from different ISP, lets say 12Mbps + 24Mbps + 8Mbps, so will I get 44Mbps internet connection in total?Also, on 887G router, if I use DSL 12Mbps broadband, can I use 3G internet connection constantly, not for backup only. And will I get the total bandwidth output as a sum of two connections?
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Nov 29, 2011
I have 2 Cat-6506's that are used for my WiSM's. The only thing in both Chassis is 2 X WiSMs a SUP-7203A and a 6516A line card.The only connection between the rest of the network and these chassis is on port gig 1/2.[code] If I have read other posts correctly all points to the ASIC being overun by that traffic being sent from my WiSMs out to the Network.
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Apr 25, 2012
I have a Catalyst Switch that is been used as a SAN switch providing ISCSI connection for servers.The total output drops of the interfaces connected to the SAN and some connected to the servers keep increasing.
Example below:
SWESAN1-1#sh interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected) Hardware is Gigabit Ethernet, address is ec44.763c.8f01 (bia ec44.763c.8f01)MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 5/255Encapsulation ARPA, loopback not setKeepalive set (10 sec)Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTXinput flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00Last input never, output 00:00:08, output hang neverLast clearing of "show interface" counters 03:25:04Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 78Queueing strategy: fifoOutput queue: 0/40 (size/max)5 minute input rate 22322000 bits/sec, 2171 packets/sec5 minute output rate 5155000 bits/sec, 1487 packets/sec20441503 packets input, 23941254166 bytes, 0 no bufferReceived 0 broadcasts (0 multicasts)0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored0 watchdog, 0 multicast, 0 pause input0 input packets with dribble condition detected16323602 packets output, 9608971046 bytes, 0 underruns0 output errors, 0 collisions, 0 interface resets0 babbles, 0 late collision, 0 deferred0 lost carrier, 0 no carrier, 0 PAUSE output0 output buffer failures, 0 output buffers swapped out
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Feb 21, 2013
I have a problem with Total Output Drops, it's increase and decreases on WS-C3750E-48TD-E.
SWCIACTCT05#sh int gi1/0/47 | i Total output drops:
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344
SWCIACTCT05#sh int gi1/0/47 | i Total output drops:
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344
SWCIACTCT05#sh int gi1/0/47 | i Total output drops:
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6487344
[code]....
I checked and found two registered bug id: CSCtq86186 / CSCso81660.I would like to know what is the best IOS version to update my switch, IOS 15.0.2 SE2 or 12.2.58 SE2, by the way, my environment is very critical (data center) and the version 15.0.2 SE2 is very recent, but its stable ?In both versions the problem are fixed?
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Jul 18, 2012
I´m detecting on my ACE 20.
I´m monitoring the total number of concurrent sessions of my ACE 20 (using Cacti), and from time to time, with no discernable pattern, I see an instant drop of sessions to half...I don´t detect any disturbance with our traffic and service, I have no complaints, but it's a very accentuated drop.
I´m able to get 1 or 2 days withouth any suddent drop of connections, and then for no reason I pass from 500.000 to 200.000 sessions in a minute. Then they gradually go up again.
I´ve seen in ACE´s session table that she keeps a great number of half-open, or closed sessions, and those are counted as part of concurrent sessions. Is there any flush on ACE´s table when she reaches a certain number of closed TCP sessions or something like that?
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Mar 27, 2012
Our database server is connected on cisco swich 2960G gigabitEthernet 0/38.while showing the interface command the total output drops is a large value..Is there any issue with this value.I think this is one of the reason for slow access of the server.
cisco6#show interfaces gigabitEthernet 0/38
GigabitEthernet0/38 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 58bc.2746.45a6 (bia 58bc.2746.45a6)
[Code].....
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Jan 19, 2012
I am having Cisco 3845 series router with c3900-universalk9-mz.SPA.151-4.M2.bin IOS . I want to install new Licence on it for DATA. When i am trying to install licence on it i am facing the error "% Error: License installation failed with error: XML parsing failed".
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May 22, 2012
What is the cause of having a huge number ( 875349) of total output drops on one of my gigabit utp port gi 2/12 which is connected to Cisco 1841 fa0/0 router by mean of cat5e cable.I did change the cable from cat5e to cat 6 and tried to increase hold queue to 4096 and to tweak wrr queue bandwidth
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May 15, 2011
I am seeing Interface output drops that appera to be incorrect. When I do "Show Interface gi1/0/20", I will get interface output drops of "4294961382". But, when I do the same command again it shows "0" drops. Is this a reporting error? I am ruinning c3750-ipservicesk9-mz.122-58.SE.bin on a 3750 stack with 2 switches in the stack. [code]
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