Have an existing wireless network using 2 1140's.. (access point and repeater)....using WPA for encryption. This setup has worked well for years now. No VLANS setup on the access points. 1140's are autonomous.
Just purchased an 1142 to add to the network to give us N capability...set it up in autonomous mode. Access point works fine....sort of. I do not wish to associate the 1140's with the 1142. No VLANS setup on this access point, either
I have both radios enabled on the 1142...both with same SSID, and using WPA2 encryption. SSID and key is different from the existing 1140 access points that I have.
Here is my issue. IF the 2.4 radio is enabled, then my iPad will connect, then drop the IP address....over and over. Same with the desktops and laptops we have. I never lose my association to the 1142, I just lose the IP address.
IF the 2.4 radio is disabled, then iPad or computers will connect to the 1142 just fine...and keep the IP address (from a DHCP server on the network).
The existing 1140 network is on Channel 6. I manually set the 1142 to Channel 1
Clientlink is enabled on both radios. System software is c1140-k9w7-tar.124-21a.JA1
So....where have I screwed up? I'm new to the N thing...but I'm trying to understand it all.
And here is my running config (with the 2.4 radio shut off):
! ! Last configuration change at 21:43:37 -0500 Wed Nov 3 2010 by admin ! NVRAM config last updated at 21:43:37 -0500 Wed Nov 3 2010 by admin ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname Cisco_1142_Access_Point ! enable secret 5 $1$l7hm$Nv8WHj20tAl8bzhF.rF9L1 ! no aaa new-model clock timezone -0600 -6 clock summer-time -0500 recurring ! ! dot11 syslog ! dot11 ssid HatXXXX N authentication open authentication key-management wpa version 2 guest-mode wpa-psk ascii 7 1316001D19080223382C ! dot11 network-map ! ! username Cisco password 7 01300F175804 username admin privilege 15 password 7 104A000A04011D1C0900 ! ! bridge irb ! ! interface Dot11Radio0 no ip address no ip route-cache shutdown ! encryption mode ciphers aes-ccm ! ssid HatXXXX N ! antenna gain 0 beamform ofdm channel 2412 station-role root bridge-group 1 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 ! encryption mode ciphers aes-ccm ! ssid HatXXXX N ! antenna gain 0 dfs band 3 block beamform ofdm channel dfs station-role root bridge-group 1 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 172.16.1.15 255.255.0.0 no ip route-cache ! ip default-gateway 172.16.1.1 ip http server no ip http secure-server ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag bridge 1 route ip ! ! ! line con 0 line vty 0 4 login local ! sntp server 172.16.1.2 sntp broadcast client end
I would check the AP console output. You will see if indeed your client is constantly reconnecting or if it is indeed "just losing ip address". If you only trust what the ipad or windows show, they might show you it's the ip you're losing but most likely they're also disconnecting all the time.
Then you can check with a "show dot11 assoc all" a few details. Type it several times in a row and see the evolution of the signal strength (rssi).
If you remove the beamform command, does it work better ? (should not cause this problem but you never know ...)
I'll try your suggestions later today; thank you for replying.
As for beamform....I didn't have it enabled, but saw it suggested in another forum for an issue similar to mine, so I enabled it on the chance it might take care of the issue. Alas, nothing changed.....
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