Cisco Wireless :: Loss Of Connectivity Through WLC 2504 And 1242AG AP
Oct 20, 2012
I have an issue with a loss of connectivity after 10-15 seconds. I have a Cisco WLC 2504 controlling a Cisco 1242AG AP. The following is the topology.
Wireless Client -> 1242AG (AP) -> Port 3 WLC 2504 -> Port 1 WLC 2504 goes to fa0/2 on 3560. Port fa0/1 goes to ASA5505 (Inside)
All devices are on VLAN 10 10.50.1.0/24. AP is getting DHCP just fine and is associating with the WLC just fine. I connect my laptop to it and it connects just fine.
I then ping the gateway (ASA) 10.50.1.1 or the layer 3 interface on the switch 10.50.1.7 and it is fine for about 10 seconds, then it just dies then comes back in a few minutes and then goes away again. I have looked for duplicate IP's and can find none in any arp table.
It I just ping the controller 10.50.1.20 it is completely stable. I have moved the WLC directly off the ASA5505, moved the switch port, changed cables and the problem follows. I have even moved the AP to be directly off the switch instead of the WLC and the problem still occurs.
If I ping the AP address from a computer in the *same subnet*, I get a perfect 0% packet loss. If I ping the AP address from a computer in ANY *other subnets*, I get about 50% packet loss. If I ping anything else *other than this single AP*, to and from any other subnets, I get a perfect 0% packet loss.
Only packets orginating or sent to the AP from other subnets are getting lost.To me it looks like there is something wrong with the routing table of the AP, as if some packets were not properly returned ?
Connectivity has been intermittent the last few months and now none at all. Laptop can see the router but can't connect. Tried connecting via hard-wire to the router but no connectivity 2) tried downloading a driver update but resulted in a message saying "software can't be installed hardware doesn't exist". Check of the adapter through the device manager shows "device is working properly". Have two other dells on the same router and neither have any connectivity issues.
My WMP600N has been giving me some trouble. It randomly, meaning I have been unable to predict the loss in connectivity, drops all wireless connectivity. During one of these blackouts, the device registers as functioning correctly in the device manager. Installation went fine when I bought it last month.I have only noticed this rude interruption during a game of Rift, probably because its impacted so heavily by the interruption.
Further detail:
- The wireless icon continues to display during the loss of connectivity.
- I have another compute and a smart phone which remain connected during the loss of connectivity.
- The duration of the loss of connectivity is approximately 25-30 seconds.
I have one WLC 2504 with 7.3.101.0 code and 4 APs 1142 in Flexconnect mode all of them are in one group with 2 SSIDs in two differents VLAN:
-Admin VLAN 151 -Corporate VLAN 158 -Guest VLAN 159 -The auth is 802.1x using an ACS ver 4.2
I connect my Laptop to the corporate SSID and start to have access to web services, intranet services, etc but arround 15 25 min after i connect i lost connectivity to my GW and all the services but i still have my IP info. I do some tests on MAC books, Laptop with Windows XP, 7 and 8 and its the same for all. I config one switch port in the corporate VLAN and i never loose connectivity.
If i reset the WLAN connection all start to works.The ports in the SW are in trunk mode and almost always the APs are in connect mode.
As I continue to have various issues with my revision A version of the DIR-825, does an updated firmware is in the works? Or has revision A been DE-supported by Dlink?
I'm still having issues with: Share port printer no longer being recognized/usable until router rebootedLoss/overload of router which causes all clients (wired and wireless) to loss connectivity Router rebooting itself periodically
I have a 2921 series router w 15.1M series IOS. The platform has HWIC-2SHDSL module installed, which is used for point-to-point G.SHDSL connectivity. When I apply a service-policy on atm pvc, after 10 to 20 minutes I lose IP connectivity on ATM interface and tunnel interface also goes to down state. If I remove the service policy on ATM PVC IP connectivty returns back.
Interestingly I use exactly the same config on 2821 platform (w. WIC-1SHDSL installed) and I do not live such an issue on that platform.I tried to carry the Qos config on to Tunnel interface with shaping enabled and "no qos-preclassify" command issued, but the result is the same.
policy-map MetroDSL-llq class sna-dsl bandwidth percent 10 class netbios-dsl bandwidth percent 10
2 VLANS are configured on 2811 and terminated on 2960 switch on two ports, not a trunk configuration. Each Port is configured as a VLAN on the switch. Speed and Duplex is auto on router and switch still one port turns orange after few minutes. Loss of connectivity when port is turn orange. UTP cable is changed but still we got issue. Loss of connectivity is for 30 seconds then link is solid green for next 7 - 10 mins and back again orange (time out)
After upgrading an RV042 from 1.3.12.19 to 1.3.13.02, it loses connectivity after several hours. RV042 WAN1 is connected to cable modem (WAN2/DMZ is unused), configured to obtain IP Address.
Cold booting all devices, RV042, AP & Cable modem, re-established connectivity. Only to lose connectivity again several hours later.
Reset RV042 to factory default via reset switch and cleared log. Minimal configuration applied (domain name, hostname, ntp, WAN1 bw=8000).
Checked early this morning and no connectivity. Summary screen showed the same IP on WAN1 port. All appeared normal. Clicked renew, and connectivity was re-established. Same IP as before.
The RV042, when running 1.3.12.19, would run for many months without a hiccup.
This is the log entry when I clicked 'renew':
Aug 18 04:12:40 2011 System Log DHCP lease info: ip[68.202.x.x] mask[255.255.240.0] gw[68.202.x.x]
[Code].....
Clicking 'renew' did re-establish connectivity, but I'm not sure if it's a dhcp issue or not. If I read the log entry correctly, the router has the IP lease for an hour, which means it renews several times successfully. Connectivity is down in the morning after several hours go by without use. I'm not sure if that has anything to do with it. Again, nothing changed but the code and the RV042 ran without problems for months with the 1.3.12.19 code.
Intermittent loss of connectivity in two level router network.Static ip address from DSL modem into WAN port of linksys wrt4g, LAN port to WAN port of dlink dir-615. All pcs, printers ans a NAS connected to the lan side of dir-615 using 16 port splitter box. Wifi set up on both routers. Router 1 is 'public' to the building, router 2 is private to the non profit org. Inermittent(1 or 2 times a week) loss of connectivity to the network and to internet.
Randomly when I try to access to 2950 from management tools, switch is unreachable, I have to access from other switch and reload 2950.
Problem only is from managemt tool to managament vlan 1 2950.
The strange thing is that management interface is encountering a very fast increase of throttles, broadcast and ignored packets:
2950#show interfaces vlan 1 Vlan1 is up, line protocol is up Hardware is CPU Interface, address is 0023.3488.fd65 (bia 0023.3488.fd65) Internet address is xxxxxxxxxx MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255
[code]....
It could be a hardware problem?, IOS has been upgraded.
rececntly we have installed 2504 WLC in of branch office, I can able to log via console but it is not coming over LAN not even showing in CDP, all config seems to be fine in wired side & WLC side & physical connection also fine...LED also green.I am seeing log message in WLC, is this related to License issue
On our conference floor, AP 1242AG already exist but I am going to add AP 3602i to increase wireless coverage. . Any issue or concern with this type of setting?
is this possible, i need to convert a 1242AG Autonomous back and forth this weekend to use for a quick project for testing. i need to do: take the AP into LWAPP mode (i know how to do this with the aironet utility) take the ap from LWAPP back into a AP mode so i can use it as my access point again. [code]
I need to bridge from our office to our shop that is around 800 feet away. Here are the Details
I need the 2.4 ghz antenna for client access (Iphones are not compatiable with 802.11a) The locations are 800 feet away but are line of sight. I need to use the 5ghz antenna for the bridge i have 2 aironet 1242ag's I have 2 2.4 ghz AIR-ANT3213 antennas (planned for client access) I have 2 2.4 ghz AIR-ANT2506 (maybe useless for this)
My problem is that the range of all the listed 5 ghz antennas. None that i can find will bridge 54mb over the 5ghz radio for greater than 170ft
The closest that i can find is AIR-ANT5195. If i put these on both sides and it is outdoors line of sight, will the best i can hope for is functioning and 6mb
I am in the process of moving our office and part of the task involves relocating our existing wireless access points. They are all 1242AG's running the c1240-k9w7-mx.124-10b.JDA3 IOS. I would like to change the security on the access points to WPA 2 but that selection is not available. I think upgrading the IOS will solve this problem but I am not sure. So I guess I have two questions:
1) Does this Cisco model support WPA 2 ? 2) If so what IOS do I need to load to make WPA 2 available?
I need a temporary additional broadband connection at home and I was thinking about a bt openzone hotspot connection... I have a cisco 1242AG access point which can do bridge mode. The BT openzone thing requires a username and password. Is it possible to connect the 1242 in bridge mode to bt openzone?
What would be the ramnifactions of using AIR-1242AG-A-K9 (g radios only: no b clients) and AIR-LAP1231G-AK9 (g radios: only no b clients) with AIR- ANT1728 (non diversity antennas) on the WLAN. Some of the APs 1242/ 1231 will be with in line of site of each other.
My question is about the maximum possible transmitting power in a Cisco 1242AG-E-K9.I did an update of my AP on a new ios version and since then, the maximum power for me is limited to 17 dbm. I check this within the console and the "show controllers dot11radio0 | include Power:" command. I thought that I had 20dbm before the update, but unfortunately I can't proof this by myself because I have no AP left with the old firmware.
Is it possible that the upgrade did this? I read about the regulatory domains for the transmitting power. I live in Switzerland, so I thought I could use 100mW if I want to. I read it's not possible to use the 100mW at each speed but I think I should stull be able to select the 20dbm/100mW or am I missing something?
I have an existing 1242AG AP in a remote location, I have full access to it. I have a new 1242AG that was ordered but the client forgot to order antennas for it. Is there a way I can find out the exact model of antennas that are connected to the in place AP at the remote location??
How can I configure the wireless not to be shown for users,but used by them? On a Cisco 1242AG I mean when someone do a wireless discovery not see my wireless name, but typing the name be able to connect it.
I have an AIR-LAP1242AG-A-K9, serial number FTX1623B0RX. I just need to know how old this unit is. (I haven't attached it to our Cisco account, so I can't open a TAC for it.)
Boot Version 12.4.13.0 IOS Version 12.4(23c)JA5Mini IOS Version 3.0.51.0
I have 2 1242AG APs setup with one SSID and no vlans configured. The APs are connected to a switch along with my DHCP server. Clients are able to connect to the SSID but are unable to get an IP from the server. Clients can plug into the switch and get an IP. If I configure a static IP on the wireless card, the client works fine.
Is there something I'm missing on the AP to allow DHCP requests to pass through? IPhelper?
Here is the AP info: AIR-AP1242AG-A-K9 12.4(21a)JA1
I'm having a little issue with some Cisco Aironet1242ag WAP's. I receive a call at least twice a month stating that some of the WAP's are not giving out internet connection. What I always do is go to my patch panel and disconnect those WAP's not working and connect them back again so they can power cycle. These WAP's are connected to a Cisco3750g. Once the WAP's boot up, the users can connect to the WAP and connect to the internet.
I don't know if these WAP's are filling up with some information that causes the access points to not connect to the WAN.
I'm using a wlan controller with 1242ag converted to lwapp, i'm trying to enable 5.8 but when i change the from local to bridge the lwapp disappear from controller. May be that the firmware does not support mesh !I'm following the 4402 wlan manual at page 641.
I have an existing setup of older 1242AG-E-K9 access points with Air-ANT-ANT5160 antennas connected to them. Goal is to replace old AP's with new AIR-LAP1262N-E-K9 model. Question is that can I use only one antenna per radio? Does it work? I know that N-standard requirement is 3 antennas per radio (3 x 2.4G and 3 x 5G) but we need only B/G to work. Plan is to re-use existing AIR-ANT-ANT5160's and order new AIR-ANT2506 antennas. Setup per AP would be 1 x 2.4G and 1 x 5G.
i noticed that the 1242AG does not bring up the Radios, when there is a Power Injector connected.I see in the Logs of the AP:
%CDP_PD-2-POWER_LOW: All radios disabled - NEGOTIATED WS-C6509 <Switchport MAC Add>
The Module in the 6500 is a WS-X6348-RJ-45 The Option "Power Injector installed" on the WLC is also enabled, with the MAC Address from the Switchport, but no change.When i disable CDP on the mentioned Switch Port and reload the AP, it comes up and runs fine.
According to the documentation, I'm supposed to be hitting the Esc key when I see the Loading "flash:/[imagename]" ####### ... line, but this doesn't seem to be working. I've tried hitting the Esc key a lot during those lines, holding it down, hitting it early, hitting it late, hitting it in the middle, and still no joy.
I'm trying to break into a handful of malfunctioning 1242AG APs to see if I can get them working, or if they're faulting hardware that's beyond repair. (So far they're all coming back with: no "IP_ADDR" variable set, so how to set that without breaking out of the boot cycle).
I 'm administration an Aironet 1242ag, and we are currently buying an AIR-ANT1728 as antenna. The standard cable for the antenna is 0.9m long, and It could be insufficient for my needs.
I have two buildings that I'm trying to configure a bridge in between them using 2 1242AG APs.
Building A PCOFFICE SSID on VLAN 200 Radio G ROOT_1 SSID on Native VLAN 1 Radio A Root Bridge
Building B FDAPC SSID on Native VLAN 1 Radio G ROOT_1 SSID on Native VLAN 1 Radio A
We are using directional antenna. I know they are lined up properly because I have them both down and in front of me. I'm getting an error on the Building B AP that says " No SSID with VLAN configured. Dot11Radio1 not started." and I'm unable to get this to work. The bridge was working before I added the VLAN and encryption/WPA information for the PCOFFICE and FDAPC SSIDs
I have 2 cisco 1242Ag APs in one building and 7 in other building installed in my infrastructure. All these 9 APs are connected to WLC and all of them are added to default ap group to broadcast all the ssid... But 7 in the second bulding are working properly, but the 2 in the other building are not broadcasting the ssids. I checked the configuration in both APs and WLC as well... All the 9 APs are having the same configuration.
