Aironet 1140 54Mbps connection speed
We are having some issues with our AP: Aironet 1140 at our head office where people are complaining of slow connection speeds.
I have gone through the configuration on the controller and noticed that all Clients were connecting at 802.11g connection speeds (54Mbps).
I have noticed in the configuration page on the controller Wireless>802.11b/g/n > High Throughput is disabled. (See attached screenshot)
I don’t want to just enable this setting in case it disconnects all the users from all the AP’s not just the ones at head office.
We use 802.1x for authentication and Machine certificates.
All Clients connect using WPA2.
Would this settings increase the connection speed up to 802.11n?
Is there a way to just enable it on 1 AP to trial it before enabling it on all the AP’s?
The wireless speed is only 15-20mbps Max. When connected via Lan cable the speed is around 45mbps.
As scott said, you are getting this speed due to the half duplex nature of wireless. If your AP model is 1142, then you can configure radio1 interface (5GHz) for the SSID. You MUST use WPA2/AES or Open Auth in order to get 802.11n speeds which is greater than 54Mbps. I do not think you are using that at the moment & it may be a reason why clients data rates not get 802.11n speeds.
Below shows different AP model max data rates. If your clients having multiple spatical stream (SS) capability they can get higher speeds. Note that 20MHz BW is the max you can get in 2.4GHz band & 40MHz bandwidth you can get from 5GHz with channel bonding. So 5GHz is always better if you looking for higher througput (but obviously client should able to connect in 5GHz)
Adding antoher AP would be a good idea (without bridging) & see wether you could afford 2602 or 3602 which can go upto 450Mbps data rates . Practically if you could you get 50% (which is around 200Mbps) that is really good. Note that this is total AP througput & if you connect multiple clients that will be shared among users.
Also keep in mind when you add multiple users all users aggregate bandwidth is limited to 50Mbps due to your WAN link speed. So that would be the bottleneck within your network.
HTH
Rasika
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Similar Messages
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Cannot get Windows 7 x64 laptop to connect to AIRONET 1140 WAP
I recently changed the configuration of my Aironet 1140 from WEP to WAP2-Enterprise to make it more secure. I am using the WAP as the radius server. After making the change I connected my Blackberry to the wap as well as a Samsung Chromebook. However when I tried to connect my HP laptop it is unable to connect. Watching from the Aironet's console I see that it is processing the association and windows ask me to enter my uid and password. When I do this I get an authentication error. I have tried several times adjusting parameters on windows but it always fails. Here is the configuration of the WAP:
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname ap.acrtek-lab.com
logging rate-limit console 9
aaa new-model
aaa group server radius rad_eap
server 10.53.55.127 auth-port 1812 acct-port 1813
aaa group server radius rad_mac
aaa group server radius rad_acct
aaa group server radius rad_admin
aaa group server tacacs+ tac_admin
aaa group server radius rad_pmip
aaa group server radius dummy
aaa authentication login default local
aaa authentication login eap_methods group rad_eap
aaa authentication login mac_methods local
aaa authorization exec default local
aaa accounting network acct_methods start-stop group rad_acct
aaa session-id common
dot11 syslog
dot11 ssid Acrtek-WPA2
authentication open eap eap_methods
authentication network-eap eap_methods
authentication key-management wpa
username XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
username XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption mode ciphers aes-ccm tkip
ssid Acrtek-WPA2
antenna gain 0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface Dot11Radio1
no ip address
no ip route-cache
shutdown
encryption mode ciphers aes-ccm tkip
ssid Acrtek-WPA2
antenna gain 0
dfs band 3 block
channel dfs
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface GigabitEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
no keepalive
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface BVI1
ip address dhcp client-id GigabitEthernet0
no ip route-cache
ip http server
ip http authentication aaa
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
ip radius source-interface BVI1
radius-server local
no authentication eapfast
no authentication mac
nas 10.53.55.127 key 7 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
user xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
radius-server attribute 32 include-in-access-req format %h
radius-server host 10.53.55.127 auth-port 1812 acct-port 1813 key 7 xxxxxxxxxxxxxxxxxxxxxxxxxxxx
radius-server vsa send accounting
bridge 1 route ip
line con 0
line vty 0 4
end
Windows Configuration:
Details about network adapter diagnosis:
Network adapter Wireless Network Connection driver information:
Description . . . . . . . . . . : Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Manufacturer . . . . . . . . . : Broadcom
Provider . . . . . . . . . . . : Broadcom
Version . . . . . . . . . . . : 5.100.82.139
Inf File Name . . . . . . . . . : C:\Windows\INF\oem29.inf
Inf File Date . . . . . . . . . : Tuesday, September 18, 2012 5:42:34 PM
Section Name . . . . . . . . . : BCM43XNG2022_NT61
Hardware ID . . . . . . . . . . : pci\ven_14e4&dev_4727&subsys_1795103c
Instance Status Flags . . . . . : 0x180200a
Device Manager Status Code . . : 0
IfType . . . . . . . . . . . . : 71
Physical Media Type . . . . . . : 9
Diagnostics Information (Wireless Connectivity)
Details about wireless connectivity diagnosis:
Information for connection being diagnosed
Interface GUID: 5bab8bfe-12d7-4e0c-a46b-efc490047802
Interface name: Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Interface type: Native WiFi
Profile: Acrtek-WPA2
SSID: Acrtek-WPA2
SSID length: 11
Connection mode: Infra
Security: Yes
Connect even if network is not broadcasting: No
Connection incident diagnosed
Auto Configuration ID: 2
Connection ID: 3
Connection status summary
Connection started at: 2012-09-18 14:49:56-586
Profile match: Success
Pre-Association: Success
Association: Success
Security and Authentication: Fail
List of visible access point(s): 43 item(s) total, 43 item(s) displayed
BSSID BSS Type PHY Signal(dB) Chnl/freq SSID
00-1C-10-07-38-76 Infra <unknown> -79 11 linksys
70-56-81-CB-A2-7D Infra <unknown> -55 10 MRB LLC
08-86-3B-95-3B-E1 Infra <unknown> -77 11 belkin.be1
C0-C1-C0-52-FD-5F Infra <unknown> -75 11 AquaDeer-guest
70-73-CB-BB-9D-43 Infra <unknown> -60 1 the ridge by apple
00-17-C5-A5-5A-73 Infra <unknown> -67 2 MsPub
00-22-B0-BA-C7-E6 Infra g -72 1 mercer
E0-91-F5-D6-DF-76 Infra <unknown> -78 1 Chick-Fil-A
04-C5-A4-80-FC-50 Infra <unknown> -38 4 (Unnamed Network)
C8-3A-35-5D-AE-18 Infra <unknown> -82 4 medialink
00-23-69-1B-73-C9 Infra g -78 6 Matt and Heather
94-44-52-68-24-2B Infra <unknown> -73 5 Belkin.442B
68-7F-74-7E-50-74 Infra g -77 6 sjslinksys
00-1D-7E-49-E2-65 Infra g -75 6 Cubs
00-12-17-4B-4E-0D Infra g -41 8 (Unnamed Network)
C0-C1-C0-E4-3F-55 Infra <unknown> -78 6 SG Roi
C0-C1-C0-66-9F-CA Infra <unknown> -75 7 Heliman
66-33-4B-E1-47-27 Infra <unknown> -80 8 Jenny lake's Guest Network
00-1C-DF-A4-59-FB Infra <unknown> -60 10 radiofinger
C0-C1-C0-52-FD-5E Infra <unknown> -76 11 AquaDeer
08-86-3B-61-B0-BC Infra <unknown> -76 11 belkin.0bc
00-23-69-00-52-20 Infra g -70 11 670term
58-6D-8F-24-FC-21 Infra <unknown> -80 11 Bluejay1
04-C5-A4-80-FC-50 Infra <unknown> -36 4 Acrtek-WPA2
70-73-CB-BB-B3-49 Infra <unknown> -73 1 LeWonderment Inc.
E6-51-E4-A6-B1-25 Ad hoc g -78 4 megahoc.v24
00-17-C5-A5-5A-A9 Infra <unknown> -79 5 Vivaces
00-23-69-B4-5D-3E Infra g -81 6 Tanda
D0-66-7B-06-C7-45 Infra <unknown> -81 7 SEC_LinkShare_e70ac7
00-24-7B-5D-65-FA Infra g -80 6 myqwest0953
60-33-4B-E1-47-27 Infra <unknown> -81 8 Jenny Lake
00-25-9C-23-73-A6 Infra g -80 1 milehigh
00-24-01-DC-A4-3F Infra <unknown> -81 3 newwoman
C4-3D-C7-83-CE-74 Infra <unknown> -85 3 Desilets
08-86-3B-25-A7-CE Infra <unknown> -86 11 belkin.7ce
00-18-39-78-8F-92 Infra g -88 11 paul landow
98-FC-11-6E-E7-52 Infra <unknown> -80 11 China
28-CF-DA-B1-5F-03 Infra <unknown> -78 1 DeSanti
00-15-6D-D6-04-47 Infra g -69 1 (Unnamed Network)
00-21-91-10-1A-05 Infra g -81 1 dlink
1C-7E-E5-30-AE-66 Infra <unknown> -79 5 dlink
00-15-FF-26-47-98 Infra <unknown> -85 10 Verizon MIFI4510L 4798 Secure
00-23-69-38-2C-D2 Infra <unknown> -82 1 linksys
Connection History
Information for Auto Configuration ID 3
List of visible networks: 41 item(s) total, 41 item(s) displayed
BSS Type PHY Security Signal(RSSI) Compatible SSID
Infra <unknown> No 22 Yes linksys
Infra <unknown> Yes 82 Yes MRB LLC
Infra <unknown> Yes 26 Yes belkin.be1
Infra <unknown> No 30 Yes AquaDeer-guest
Infra <unknown> Yes 76 Yes the ridge by apple
Infra <unknown> No 62 Yes MsPub
Infra g Yes 36 Yes mercer
Infra <unknown> Yes 24 Yes Chick-Fil-A
Infra <unknown> Yes 94 Yes (Unnamed Network)
Infra <unknown> Yes 16 Yes medialink
Infra g Yes 24 Yes Matt and Heather
Infra <unknown> Yes 34 Yes Belkin.442B
Infra g Yes 26 Yes sjslinksys
Infra g Yes 30 Yes Cubs
Infra g Yes 92 Yes (Unnamed Network)
Infra <unknown> Yes 24 Yes SG Roi
Infra <unknown> Yes 30 Yes Heliman
Infra <unknown> Yes 20 Yes Jenny lake's Guest Network
Infra <unknown> Yes 76 Yes radiofinger
Infra <unknown> Yes 28 Yes AquaDeer
Infra <unknown> Yes 28 Yes belkin.0bc
Infra g Yes 40 Yes 670term
Infra <unknown> Yes 20 Yes Bluejay1
Infra <unknown> Yes 95 Yes Acrtek-WPA2
Infra <unknown> Yes 34 Yes LeWonderment Inc.
Ad hoc g No 24 Yes megahoc.v24
Infra <unknown> No 22 Yes Vivaces
Infra g Yes 18 Yes Tanda
Infra <unknown> Yes 18 Yes SEC_LinkShare_e70ac7
Infra g Yes 20 Yes myqwest0953
Infra <unknown> Yes 18 Yes Jenny Lake
Infra g Yes 20 Yes milehigh
Infra <unknown> Yes 18 Yes newwoman
Infra <unknown> Yes 10 Yes Desilets
Infra <unknown> Yes 8 Yes belkin.7ce
Infra g Yes 4 Yes paul landow
Infra <unknown> Yes 20 Yes China
Infra <unknown> Yes 24 Yes DeSanti
Infra g No 50 Yes (Unnamed Network)
Infra g No 22 Yes dlink
Infra <unknown> Yes 10 Yes Verizon MIFI4510L 4798 Secure
List of preferred networks: 5 item(s)
Profile: Acrtek-WPA2
SSID: Acrtek-WPA2
SSID length: 11
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: Yes
Profile: ZRDD2
SSID: ZRDD2
SSID length: 5
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028002
Profile: GMANNET
SSID: GMANNET
SSID length: 7
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028002
Profile: Conference Rm
SSID: Conference Rm
SSID length: 13
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028002
Profile: rntdnet
SSID: rntdnet
SSID length: 7
Connection mode: Infra
Security: Yes
Set by group policy: No
Connect even if network is not broadcasting: No
Connectable: No
Reason: 0x00028002
Information for Connection ID 4
Connection started at: 2012-09-18 14:50:08-279
Auto Configuration ID: 3
Profile: Acrtek-WPA2
SSID: Acrtek-WPA2
SSID length: 11
Connection mode: Infra
Security: Yes
Pre-Association and Association
Connectivity settings provided by hardware manufacturer (IHV): Yes
Security settings provided by hardware manufacturer (IHV): No
Profile matches network requirements: Success
Pre-association status: Success
Association status: Success
Last AP: 04-c5-a4-80-fc-50
Security and Authentication
Configured security type: WPA2-802.1X
Configured encryption type: CCMP(AES)
802.1X protocol: Yes
Authentication mode: Invalid (5)
Number of 802.1X restarts: 1
Number of 802.1X failures: 0
Key exchange initiated: No
Number of security packets received: 2
Number of security packets sent: 1
Security attempt status: Success
Information for Auto Configuration ID 2
List of visible networks: 40 item(s) total, 40 item(s) displayed
BSS Type PHY Security Signal(RSSI) Compatible SSID
Infra <unknown> No 22 Yes linksys
Infra <unknown> Yes 85 Yes MRB LLC
Infra <unknown> Yes 22 Yes belkin.be1
Infra <unknown> No 32 Yes AquaDeer-guest
Infra <unknown> Yes 64 Yes the ridge by apple
Infra <unknown> No 74 Yes MsPub
Infra g Yes 60 Yes mercer
Infra <unknown> Yes 24 Yes Chick-Fil-A
Infra <unknown> Yes 86 Yes (Unnamed Network)
Infra <unknown> Yes 38 Yes medialink
Infra g Yes 36 Yes Matt and Heather
Infra <unknown> Yes 40 Yes Belkin.442B
Infra g Yes 62 Yes sjslinksys
Infra g Yes 30 Yes Cubs
Infra g Yes 95 Yes (Unnamed Network)
Infra <unknown> Yes 24 Yes SG Roi
Infra <unknown> Yes 28 Yes Heliman
Infra <unknown> Yes 20 Yes Jenny lake's Guest Network
Infra <unknown> Yes 81 Yes radiofinger
Infra <unknown> Yes 10 Yes AquaDeer
Infra <unknown> Yes 32
Diagnostics Information (Wireless Connectivity)
Details about wireless connectivity diagnosis:
For complete information about this session see the wireless connectivity information event.
Helper Class: Auto Configuration
Initialize status: Success
Information for connection being diagnosed
Interface GUID: 5bab8bfe-12d7-4e0c-a46b-efc490047802
Interface name: Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Interface type: Native WiFi
Profile: Acrtek-WPA2
SSID: Acrtek-WPA2
SSID length: 11
Connection mode: Infra
Security: Yes
Connect even if network is not broadcasting: No
Result of diagnosis: Problem found
Issue referred to: L2Sec Helper Class
Root cause:
Windows could not connect to "Acrtek-WPA2"
You can try to connect again.
Repair option:
Reset your wireless network adapter
This will disable and then enable the network adapter "Wireless Network Connection" on this computer.
Diagnostics Information (L2sec Helper Class)
Details about L2Sec Helper Class diagnosis:
For complete information about this session see the Wireless Diagnostic Informational Event.
Helper Class: Layer2 Security
Initialize Status: Success
Result of diagnosis: Problem found
Issue referred to: EAP Helper Class
Root cause (EAP):
Network authentication failed\nWindows doesn't have the required authentication method to connect to this network.
Detailed root cause:
EAP failed
Workaround for hypothesis: Contact the network administrator for "Acrtek-WPA2"
EAP workaround: Contact your network administrator\nWindows needs to be configured to use the authentication method required for this network.
Information for connection being diagnosed
Interface GUID: {5bab8bfe-12d7-4e0c-a46b-efc490047802}
Interface name: Broadcom 4313GN 802.11b/g/n 1x1 Wi-Fi Adapter
Interface type: Native WiFi
Profile: Acrtek-WPA2
SSID: Acrtek-WPA2
SSID length: 11
Connection mode: Infra
Security enabled: Yes
Connection ID: 3
Security settings provided by hardware manufacturer (IHV): No
Profile matches network requirements: Yes
Pre-Association and association status: Success
Security and Authentication:
Configured security type: Robust Secure Network (RSN / WPA2) with 802.1X
Configured Encryption type: CCMP (AES)
Security connect status: Fail 0x00050005
Number of security packets received: 4
Number of security packets sent: 3
802.1X protocol: Yes
Authentication Identity: User only
IAS Server engaged: Yes
EAP Method supported by IAS Server: Unknown
EAP type: 25
EAP Error: 0x40420016
Number of 802.1X restarts: 1
Number of 802.1X failures: 1
802.1X status: Fail 0x00050005
Key exchange initiated: No
Unicast keys received: No
Multicast keys received: No
Network Diagnostics Log
File Name: A20D3467-8AD4-483E-91F4-9EC5E18AA1F9.Diagnose.0.etl
Other Networking Configuration and Logs
File Name: NetworkConfiguration.cab
Collection information
Computer Name: ACCRETIVE-SW
Windows Version: 6.1
Architecture: amd64
Time: Tuesday, September 18, 2012 2:50:09 PM
Any help would be greatly appreciated.Hello Mr. Wells,
Thank you for your question.
However, the Small Business Support Community is limited to Cisco Small Business Products, and the Aironet products are considered as a Enterprise level devices.
I recommend you to post this question on the on the correct forum, in order to get a better response.
You can move your post using the Actions panel on the right.
Best regards,
Diego Rodriguez
Cisco Small Business Community Engineer -
Android 4.1 tablet not connecting to Aironet 1140
Hello community, I am having an issue with my Android Tablet running 4.1 (Jelly Bean). It is able to the SSID, but when I try to connect - it stays connecting and then says saved, and never connects, as it does not pick up an IP address. I updated the firmware on the Aironet 1140 due to my Windows 8 pc's not connecting as well, it solved my Windows 8 problem, just not my Android Tablet problem. My Ipads do work. Just any android device I connect...
Anyone, ran into this issue that can assist?
Thanks in advance.Hello William,
What is the security used on your wireless LAN?
Can you apply this command on your WLC CLI:
show wlan
and post us the output right here?
Reards,
Amjad
Rating useful replies is more useful than saying "Thank you" -
Mimo access points with Static WEP security do not allow connection speeds above 54mbps
I am getting this message:
Access Connections - Mimo access points with Static WEP security do not allow connection speeds above 54mbps
If I switch from WEP to WAP i do not get the message but I still only get 54mbps speed. I have a Linksys Wireless-N Broadband Router. Is there a setting that I am missing???Yes you need to use WPA-AES or WPA2-AES, or no encryption, to go faster than 54Mbps. This is part of the 802.11n spec.
That's not so bad, because if you have the right 802.11n card and use the right settings you can go up to 300Mbps!
What bites is that the 802.11n card which comes with X-Series ThinkPads is the Intel 4965AGN. It does not support the broader 802.11n 40MHz channel width option, limiting the top speed to 130Mbps .
The new ThinkPads based on the Montevina/Centrino 2 platform will most likely use the Intel WiFi Link 5100/5300 802.11n/WiMax cards, which I hope will fix this, coz I'm going to buy one!
I don't work for Lenovo. I'm a crazy volunteer! -
Connected clients on Aironet 1140
I've been using Aironet 1140 series access point for a while. Recently it started to drop the wireless clients quite often. we have nearly 20 wireless users and one access point. they are mix of apple macs, windows and mobile phone users. when i went in to see the connected clients all the clients whown on the web page are connected through cable to our LAN. whay is it showing as connected to dot11 radio? am i missing something here? thanks
Can you post a screen shot? You sure the devices on your lan doesn't ahve a wireless card?
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered" -
Aironet 1140 connection and log questions
Hi Cisco gurus,
Recently we decided to change the name of one of our Aironet 1140 AP's. Everything was great for a few days then, for some reason, nobody was able to connect to it. They would all recieve timeout messages when they would connect. A quick reset solved the problem, but I'm curious if there was an actual reason to why it didn't allow users to connect in case it happens again.
Which brings me to my next question, how do you set the AP clock so that the event logs display the proper date and time? I'm sure I overlooked something, but I can't find out how to set the proper date and time.
Thank you in advance.conf t
serv time d d s l
serv time l d s l
sntp service
! Set the timezone
clock timezone WORD
clock summer-time WORD recurring -
Cisco Aironet 1140 Issues (Dropping clients, 5GHz issue, AP Switching)
Greetings,
We've been having issues for a while with these Aironet 1140's. We have two of them in the office and the issue is similar to the first issue displayed in this post:
https://supportforums.cisco.com/docs/DOC-26228
The only difference is that I can't do this since we don't use a controller.
We're using Mac clients on Lion/Mt. Lion. We have no issues connecting to the access points, but occassionally the user will drop off one of the AP's(Access Point 2). Recently I changed the setup from TKIP/WPA to AES-CCM/WPA to get the PHY address to 802.11N instead of 802.11G. I got the speeds working fine, but I suppose this caused an issue of people dropping off at different times. I noticed if I remove the SSID from the preferred list and reconnect it goes from WPA to WPA2. Not sure if this is relevant information, just trying to list what I can to resolve this issue. I haven't had any reported issues with the other Access Point(Access Point 1).
Another issue we have is getting the radio to work on 5GHz for Access Point 1. It seems when a user is connected to the 5GHz signal, it will not load any web pages. Can ping out just fine, and ping internally as well. I've checked to see if the client is getting an IP address, and it is. It also has DNS set to 8.8.8.8 and another DNS IP we use. The other Access Point seems to work just fine with 5GHz enabled. Both work with 2.4GHz with no issues at all.
Lastly, clients are not switching Access Points to the strongest signal. I've tried this test with 5+ machines running different OS's from Snow Leopard to Mt. Lion. The client will not switch over passively, the Laptop must be closed and reopened to re-establish the connection to grab the closest signal. This isn't a huge issue, but it's something I'd like to get fixed. This could have been an ongoing issue before I switched the AP's to AES-CCM, but I've only noticed it after the fact.
If there's any additional information needed that could help resolve these issues, let me know.
Thanks!The wireless clients/devices decides which WAPs to join. It's not a "Cisco thing". It's the standard.
That's what I figured, it's just an issue we have been having lately and trying to rule out the possibility it might be an Access Point issue.
Did you enable WPA and WPA2??? Apple does not like to "choose". You have to either use WPA OR WPA2.
Actually, yes I should have included my steps of trying to resolve the issue. For some reason, the SSID would not appear in the listing of SSID's so I removed the preferred connection, which was WPA, and manually added it to be WPA2 Personal on the client. Still saw some issues with a few users, others seem to have rectified or they're not telling me.
I checked the event logs on the device and saw this:
Packet to client e0f8.4735.c16e reached max retries, removing the client
After some research, it was recommended to raise the packet retry value to 128. I haven't received any complaints from the 3 people that usually complain about dropped wifi yet, but it's still too soon to say.
The only thing I can think of is the signal strength. Disable the 2.4 Ghz and see what signal strength you are getting with the 5.0 Ghz.
It should not be signal strength since I am about 10 feet away on my test machine which has the issue as well as any other clients in any distance long enough to grab the connection. I will try turning off 2.4 when there's nobody in the office tomorrow in the morning to see if that actually works. I would like to have it dual band though since we're not all at 5GHz here. With this issue, I was actually fearing that there just may be an issue with the 5GHz radio hardware. We also have an extra 1140 laying around I used for testing; the 5GHz radio worked with identical settings to the one not working.
Thanks for the reply! I will take a look at what you suggested a little further and keep this updated if increasing the packet retry value actually rectified the problem just in case someone else has the same issue. -
Cisco Aironet 1140: 3 of our 4 are always hanging
Our office has 4 Cisco Aironet 1140 access points mounted on the ceiling. They are all powered via PoE. Every few days 3 of the 4 access points hang and have to be rebooted. When they hang I am not able to connect to their web interface to check the logs. The fourth, for some reason, always seems to stay alive.
I checked the configuration for all AP's and "Hot Standby" is disabled
They are all using static IP addresses. I've tried 2 different banks of static IP addresses and 3 of 4 still hange so I don't think this is an IP conflict
I have saved the configurations and compared them and they are all identical, where possible.
They all have software version: 12.4(21a)JA1
They all have bootloader version: 12.4(23c)JA1
I have tried to download the latest software/firmware, but unfortunately I do not have a valid service contract in place with Cisco and therefore can't download the latest version. All of our CISCO hardware was purchased from Amazon resellers and they can't seem to help me with this. I have also tried to contact Cisco and they can't seem to help either. If anyone has a suggestion on how I can get a valid service contract that information would also be very helpful!!!
Does anyone have any ideas why 3 of our 4 access points would hang? When they hang, I can't login to the web interface and the logs seem to reset when I reset each access point. I have also set up an rsyslog server and I don't see a log entry that would indicate a problem.
Any ideas?
Thank youHere is the config for one of the AP's that keeps hanging:
! Last configuration change at 09:18:05 -1000 Mon Jan 30 2012 by admin
! NVRAM config last updated at 09:18:05 -1000 Mon Jan 30 2012 by admin
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname XXX2
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa session-id common
clock timezone -1000 -10
ip name-server 8.8.8.8
ip name-server 8.8.4.4
dot11 syslog
dot11 ssid XXX2
authentication open
authentication key-management wpa version 2
guest-mode
wpa-psk ascii 7 01234567890123456789012
username admin privilege 15 password 7 01234567890123456789012
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption mode ciphers aes-ccm
ssid XXX2
antenna gain 0
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface GigabitEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
no keepalive
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface BVI1
ip address 192.168.100.252 255.255.255.0
no ip route-cache
ip default-gateway 192.168.100.1
ip http server
ip http authentication aaa
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
snmp-server community MyCommunity RO
bridge 1 route ip
line con 0
line vty 0 4
sntp server 192.43.244.18
sntp broadcast client
end -
Cisco 1130 AP connection speed?
What speed do Cisco 1130AG access points connect to the network via the Ethernet port? Is it a 10/100 connection or does it support gigabit? I've searched and can't seem to find this information. Thanks!
Hi Lillie,
If you want an AP with 10/100/1000BaseTx copper uplink then 1140 or 1250 is your way to go.
Data Sheet Cisco Aironet 1140 Series Access Point
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10092/datasheet_c78-502793.html
Data Sheet Cisco Aironet 1250 Series Access Point Data Sheet
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps6973/ps8382/product_data_sheet0900aecd806b7c5c.html
If you are going to choose the 1250, note that the Antennaes are optional. Here's some information regarding them.
Antenna Product Portfolio for Cisco Aironet 1250 Series Access Points
http://www.cisco.com/en/US/prod/collateral/wireless/ps7183/ps469/at_a_glance_c45-513837.pdf
The AP1250, when operating with 2 radio modules on Autonomous IOS, requires a minimum of 18.5 watts (ePoE). So you'll need either a Power Injector or PoE switch that will support enhanced PoE such as the 3560-E or 3750-E.
802.11n Design and Deployment Guidelines
http://www.cisco.com/en/US/solutions/collateral/ns340/ns394/ns348/ns767/white_paper_80211n_design_and_deployment_guidelines.html
Hope this helps. -
How to load a boot image to cisco aironet 1140 series after missing boot image
Hi all,
I need a solution for this. When i switch my cisco aironet 1140 , it s blinking with red light .and gives a message "no boot image to load".
When i tried next time, by pressing escape it shows this message that i have mentioned below.
ap:
ap:
using eeprom values
WRDTR,CLKTR: 0x83000800 0x40000000
RQDC ,RFDC : 0x80000035 0x00000208
using ÿÿÿÿ ddr static values from serial eeprom
ddr init done
Running Normal Memtest...
Passed.
IOS Bootloader - Starting system.
FLASH CHIP: Numonyx P33
Checking for Over Erased blocks
Xmodem file system is available.
DDR values used from system serial eeprom.
WRDTR,CLKTR: 0x83000800, 0x40000000
RQDC, RFDC : 0x80000035, 0x00000208
PCIE0: link is up.
PCIE0: VC0 is active
PCIE1: link is NOT up.
PCIE1 port 1 not initialized
PCIEx: initialization done
flashfs[0]: 1 files, 1 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 32385024
flashfs[0]: Bytes used: 1536
flashfs[0]: Bytes available: 32383488
flashfs[0]: flashfs fsck took 16 seconds.
Reading cookie from system serial eeprom...Done
Base Ethernet MAC address: 28:94:0f:d6:c8:62
Ethernet speed is 100 Mb - FULL duplex
The system is unable to boot automatically because there
are no bootable files.
C1140 Boot Loader (C1140-BOOT-M) Version 12.4(23c)JA3, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Compiled Tue 18-Oct-11 14:51 by prod_rel_team
ap:
So , now my question is how to load the boot image ? From where will we get this ? OR
I m also having another Cisco aironet 1140 , Can i get bootimage from that . Kindly let me know the solution from genius ?Take a look at this link as it should have the info you need
https://supportforums.cisco.com/docs/DOC-14636
Sent from Cisco Technical Support iPhone App -
Setup two 1140 w/ connection issues
Hi,
I've got two Cisco Aironet 1140 Access Points in my office. They're both setup as AP at opposite ends of the office with the same SSID, so employees can walk throughout the office without losing connectivity.
We recently re-started one of the AP's, but ever since the re-start, users cannot roam from one AP to another without dropping their internet connection to the outside world. In other words, if I originally connect on Side A and walk over to Side B, I lose my internet connection. Users can still access the internal network, and I can launch the web interface for both AP's. But, it seems like the DNS doesn't recover until I go back to Side A.
Any idea on what we could do to remedy this issue? Thanks for your help!I would not even suggest moving down the road of WDS for a 2 AP PSK configuration for sake of overcomplicating what seems to be a basic problem. The clients should be able to roam fast enough with the PSK to where the end-user would not even notice. There is a larger problem here.
Can you post the run-config from each of your APs? Are these APs on the same subnet?
You say you can reach your "internal" network resources when you have roamed, but not the "internet". If you can still reach your default g/w and internal resources; your wireless is working just fine. Access to the "internet" is in no way an indication that this roam is not working. If you roam and your client can no longer reach it's default gateway, "then" you might actually be having an issue. Are you "sure" DNS is the problem you are facing? Can you move to AP B, which doens't seem to have internet, and ping a public IP address like 4.2.2.2?
There are other debugs we can run to see what is happening, but I would start by posting both run-configs. Specify "which" AP appears to be causing the problem. -
WPA-TKIP WPA2-AES Connection speed
Hi,
My customer uses controller based wireless network. There is a connection speed problem between two SSID's. First SSID uses WPA(TKIP+AES) and WPA2(TKIP+AES) encryption method and dot1x authentication method. Second SSID uses open authentication (this is a guest SSID)
802.11 a/n/ac is enable on WLC and client can connect with these methods. But clients connect to the first SSID with 802.11 b/g (54 Mbps) and connect to the second SSID with 802.11 a/n/ac. Customer wants to know why our clients connect with low speed to first SSID even if a/n/ac is enable.
Sometimes WPA-TKIP encryption methods can reduce the connection speed. Do you have any idea about that and official document about this problem?
Thanks,
Burhan,TKIP and AES are two different types of encryption that can be used by a Wi-Fi network. TKIP stands for “Temporal Key Integrity Protocol.” It was a stopgap encryption protocol introduced with WPA to replace the very-insecure WEP encryption at the time. TKIP is actually quite similar to WEP encryption. TKIP is no longer considered secure, and is now deprecated. In other words, you shouldn’t be using it.
AES stands for “Advanced Encryption Standard.” This was a more secure encryption protocol introduced with WPA2, which replaced the interim WPA standard. AES isn’t some creaky standard developed specifically for Wi-Fi networks; it’s a serious worldwide encryption standard that’s even been adopted by the US government. For example, when you encrypt a hard drive with TrueCrypt, it can use AES encryption for that. AES is generally considered quite secure, and the main weaknesses would be brute-force attacks (prevented by using a strong passphrase) and security weaknesses in other aspects of WPA2.
The “PSK” in both names stands for “pre-shared key” — the pre-shared key is generally your encryption passphrase. This distinguishes it from WPA-Enterprise, which uses a RADIUS server to hand out unique keys on larger corporate or government Wi-Fi networks.
In summary, TKIP is an older encryption standard used by the old WPA standard. AES is a newer Wi-Fi encryption solution used by the new-and-secure WPA2 standard. In theory, that’s the end of it. But, depending on your router, just choosing WPA2 may not be good enough.
While WPA2 is supposed to use AES for optimal security, it also has the option to use TKIP for backward compatibility with legacy devices. In such a state, devices that support WPA2 will connect with WPA2 and devices that support WPA will connect with WPA. So “WPA2″ doesn’t always mean WPA2-AES. However, on devices without a visible “TKIP” or “AES” option, WPA2 is generally synonymous with WPA2-AES.
WPA and TKIP compatability options can also slow your Wi-Fi network down. Many modern Wi-Fi routers that support 802.11n and newer, faster standards will slow down to 54mbps if you enable WPA or TKIP in their options. They do this to ensure they’re compatible with these older devices.
In comaprison, even 802.11n supports up to 300mbps — but, generally, only if you’re using WPA2 with AES. Theoretically, 802.11ac offers theoretical maximum speeds of 3.46 Gbps under optimum (read: perfect) conditions.
In other words, WPA and TKIP will slow a modern Wi-Fi network down. It’s not all about security! -
How do I monitor connection speeds on the E4200?
All my previous routers have allowed me to monitor my connection speeds however I can't find this in this router. I found the client table under "status" but I have not been able to find the connection speeds anywhere. I like to make sure that my devices are running at close to 300Mbps and not 54Mbps in case I have a connection setup wrong. I have searched in the forums without much luck. Thanks.
Brethollijb wrote:
All my previous routers have allowed me to monitor my connection speeds however I can't find this in this router. I found the client table under "status" but I have not been able to find the connection speeds anywhere. I like to make sure that my devices are running at close to 300Mbps and not 54Mbps in case I have a connection setup wrong. I have searched in the forums without much luck. Thanks.
Bret
Tomato or DD-WRT opensource firmware would allow this...keep in mind that the E4200V2 will NEVER be supported by any opensource non-OEM firmware!
Member of the Professional Aviation Safety Specialists Union! -
Basic connection speed questions for WRT54GS v.4
Hi, and sorry, I am something of a network numpty (though I understand my pc pretty well)
My router only ever transfers data at 54mbps (according to the wireless network connection icon in the system tray) - so, what has happened to the speed booster increasing it to 108mbps? Is 54mbps the best I can get?
Is this 54mbps in each direction = 108 total?!
And, how does this then limit my broadband downloading speeds? I have a 20Mb connection, and get around 17Mb speeds on my desktop pc which is connected via an ethernet cable to the router. The laptop, connected by wireless, gets 6Mb max - is this being limited by the router's capabilities?First of all, Speedbooster is a software enhancement to the router. It does not change the basic wireless g connection speed of 54 Mbps. The Speedbooster enhancement is supposed to give you a 10 to 20% boost in data throughput. In order to get the full benefit, both the router and your wireless adapter must have Speedbooster. If only the router has it, you still get a benefit, but not as much.
Under ideal lab conditions (read: not in an ordinary home) a wireless g system can deliver as much as 20 to 25 Mbps of data. Most home users get substantially less. Most home users are happy if they can get 50% of their wired speed (in your case, 50% of the 17 Mbps). Some have achieved as much as 80% of their wired speed.
Its possible that 6 Mbps might be all that your system will be able to do, but I would suggest that you try a few adjustments and see if you can improve it. Here are my suggestions:
First of all, give your network a unique SSID. Do not use "linksys". If you are using "linksys" you may be trying to connect to your neighbor's router. Also set "SSID Broadcast" to "enabled". This will help your computer find and lock on to your router's signal, and this can give a slight performance gain.
Poor wireless connections are often caused by radio interference from other 2.4 GHz devices. This includes wireless phones, wireless baby monitors, microwave ovens, wireless mice and keyboards, wireless speakers, and your neighbor's wireless network. In rare cases, Bluetooth devices can interfere. Even some 5+ GHz phones also use the 2.4 Ghz band. Unplug these devices, and see if that corrects your problem.
In your router, try a different channel. There are 11 channels in the 2.4 GHz band. Usually channel 1, 6, or 11 works best. Check out your neighbors, and see what channel they are using. Because the channels overlap one another, try to stay at least +5 or -5 channels from your strongest neighbors. For example, if you have a strong neighbor on channel 9, try any channel 1 through 4.
Also, try to locate the router about 4 to 6 feet above the floor, in an open area. Do not locate it behind your monitor or near other computer equipment or speakers. The antenna should be vertical.
Also, in the computer, go to your wireless software, and go to "Preferred Networks" (sometimes called "Profiles" ). There are probably a few networks listed. Delete any network named "linksys". Also delete any network that you do not recognize, or that you no longer use. If your current network is not listed, enter its info (SSID, encryption (if any), and key (if any) ). Then select your current network and make it your default network, and set it to automatic login. You may need to go to "settings" to do this, or you may need to right click on your network and select "Properties" or "settings".
If the above does not fix your problem, download and install the latest driver for your wireless card.
If you still have problems, try the following:
For wireless g routers, try setting the "Transmission Rate" to 54 Mbps. For wireless n routers, try setting the "n Transmission Rate" to 162 Mbps, and the (wireless g) "Transmission Rate" to 54 Mbps.
If you still have trouble, download and install the latest firmware for your router. After a firmware upgrade, you must reset the router to factory defaults, then setup the router again from scratch. If you saved a router configuration file, DO NOT use it.
Hope this helps. Please let me know your results.
Message Edited by toomanydonuts on 11-29-2007 02:35 AM -
WRV54G Slow Wireless Connection Speeds
Good Afternoon,
I purchased a WRV54G recently to replace my WRT54G as I needed to run a road-warrior VPN setup. This for the most part works fine overall using QuickVPN.
The issue I am having is the connection speeds I am getting when my local lan PC's connect wirelessly to the WRV54G router. For some reason I can never get a connection over 11.0 MBS while using the WRT54G I always got 54.0 MBS which I would expect since all PC's are running 802.11G cards.
I did upgrade to the latest firmware on the site thinking this may have be the issue, this however did not help. The other thing I noticed was if I place the router in a G Only state, no wireless PC can connect to the router.
Any help would be appreciated. It is odd I get full 54.0mbs connections using the WRT54G, but when using the WRV54G I get 11.0mbs. It like it is connection B only which is very odd.
Thanks,
Chrishi...try out the following wireless settings
on the router's ui , go to " wireless " tab and change the channel - 11 , go to "advanced wireless settings " and change the "Control TX Rates" to 54mbps , beacon - 75 , fragmentation - 2306 and RTS - 2307.....let me know if that works for you...
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