07-29-2013 06:15 AM - edited 07-04-2021 12:32 AM
Hello Everyone,
I have around 12 production machine connected ro wireless bridge and these bridge are connected to Cisco APs.
Problem:
1. these machine are disconnecting after radnodem intervel.
2. I am Not able to see DHCP lease IP address in Controller>Internal DHCP server>DHCP Allocated Lease.
Can anyone help in this.
Regards
07-29-2013 07:38 AM
Can you post the WLAN config that these devices connect to ?
There are a number of timers you should be aware of.
Session timeout is found under the ADVANCE tab of the WLAN. This is set to 1800 seconds by default. There is also a user idle timeout that is under the CONTROLLER tab and this is set to 300 seconds.
Also make sure client load balance is disabled.
These are typical trouble makers.
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"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
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"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."
07-30-2013 12:27 AM
Hi Geoge,
I unchecked the Enable Session Timeout , user idle timeout is 300seconds(as u said it by default).
Client Load balance is disabled.
Regards
Sandeep
07-30-2013 03:56 AM
Post your show WLAN
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07-30-2013 04:25 AM
Hi Scott,
Here is the output of sh wlan 1:
(Cisco Controller) >show wlan 1
WLAN Identifier.................................. 1
Profile Name..................................... BDE
Network Name (SSID).............................. BDE
Status........................................... Enabled
MAC Filtering.................................... Disabled
Broadcast SSID................................... Enabled
AAA Policy Override.............................. Disabled
Network Admission Control
Radius-NAC State............................... Disabled
SNMP-NAC State................................. Disabled
Quarantine VLAN................................ 0
Maximum number of Associated Clients............. 0
Number of Active Clients......................... 14
Exclusionlist Timeout............................ 60 seconds
Session Timeout.................................. Infinity
CHD per WLAN..................................... Enabled
Webauth DHCP exclusion........................... Disabled
Interface........................................ bde
Multicast Interface.............................. Not Configured
--More or (q)uit current module or
WLAN ACL......................................... unconfigured
DHCP Server...................................... Default
DHCP Address Assignment Required................. Disabled
Static IP client tunneling....................... Disabled
Quality of Service............................... Silver (best effort)
Scan Defer Priority.............................. 4,5,6
Scan Defer Time.................................. 100 milliseconds
WMM.............................................. Allowed
WMM UAPSD Compliant Client Support............... Disabled
Media Stream Multicast-direct.................... Disabled
CCX - AironetIe Support.......................... Enabled
CCX - Gratuitous ProbeResponse (GPR)............. Disabled
CCX - Diagnostics Channel Capability............. Disabled
Dot11-Phone Mode (7920).......................... Disabled
Wired Protocol................................... None
IPv6 Support..................................... Disabled
Passive Client Feature........................... Disabled
Peer-to-Peer Blocking Action..................... Disabled
Radio Policy..................................... All
DTIM period for 802.11a radio.................... 1
DTIM period for 802.11b radio.................... 1
Radius Servers
Authentication................................ Global Servers
--More or (q)uit current module or
Accounting.................................... Global Servers
Dynamic Interface............................. Disabled
Local EAP Authentication......................... Disabled
Security
802.11 Authentication:........................ Open System
Static WEP Keys............................... Disabled
802.1X........................................ Disabled
Wi-Fi Protected Access (WPA/WPA2)............. Enabled
WPA (SSN IE)............................... Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Enabled
WPA2 (RSN IE).............................. Enabled
TKIP Cipher............................. Disabled
AES Cipher.............................. Enabled
Auth Key Management
802.1x.................................. Disabled
PSK..................................... Enabled
CCKM.................................... Disabled
FT(802.11r)............................. Disabled
FT-PSK(802.11r)......................... Disabled
FT Reassociation Timeout......................... 20
FT Over-The-Air mode............................. Enabled
--More or (q)uit current module or
FT Over-The-Ds mode.............................. Enabled
CCKM tsf Tolerance............................... 1000
CKIP ......................................... Disabled
Web Based Authentication...................... Disabled
Web-Passthrough............................... Disabled
Conditional Web Redirect...................... Disabled
Splash-Page Web Redirect...................... Disabled
Auto Anchor................................... Disabled
H-REAP Local Switching........................ Disabled
H-REAP Local Authentication................... Disabled
H-REAP Learn IP Address....................... Enabled
Client MFP.................................... Optional
Tkip MIC Countermeasure Hold-down Timer....... 60
Call Snooping.................................... Disabled
Roamed Call Re-Anchor Policy..................... Disabled
SIP CAC Fail Send-486-Busy Policy................ Enabled
SIP CAC Fail Send Dis-Association Policy......... Disabled
Band Select...................................... Disabled
Load Balancing................................... Disabled
Mobility Anchor List
WLAN ID IP Address Status
------- --------------- ------
Regards
07-30-2013 04:36 AM
You need to use either WPA v1 with TKIP or WPA v2 with AES. Don't use both and don't mix and match. Sonic your scanners support WPA v2 with AES, make sure you set your WLAN to that only. If they don't support it, then use WPA v1 with TKIP.
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07-30-2013 04:51 AM
Thanks for quick reply.
Ok I changed it to WPA1/tkip ..let me monitor it for few hours.
I will let u know the result of these
Regards
07-30-2013 05:05 AM
But Can you please tell me: Why I am not able to see the DHCP Allocated Lease in WLC.
Regards
07-30-2013 05:46 AM
Well... the clients need to be connected properly first and then also as long as the WLC is the only dhcp server, then any address that the WLC issues will show up on the dhcp lease.
Thanks,
Scott
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07-30-2013 02:39 PM
Hello,
As per your query i can suggest you the following solution-
An access point may not log events related to client association and deauthentication during a client roam. The reassociation event will be missing in the logs on the access point to which the client roamed and the deauthentication event will be missing in the logs on the access point from which the client roamed. The behavior may be seen for a period of several minutes.
Hope this will help you.
07-30-2013 10:59 PM
HI Abhishek,
All client are stationary
There is no roaming issue but all the scanner are connected to wireless bridge(WET200).
Regards
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