Bottlenecking at APs?

[ahcadmin1]

We've recently offered users free wifi to use while at work for streaming, browsing, etc...  I tested for a couple of weeks before go-live with absolutely no issues.  Since go-live, it has become so slow that it's unuseable.  They have a 50Mb/s circuit to use and aren't even coming close to maxing it out (~5mb/s avg).  I'm thinking maybe my AP's aren't configured correctly to handle this much traffic and was wondering if someone can offer recommendations on how to configure them for this type of traffic.  There are other SSIDs on the APs that are not having any degradation.  Of course everyone is trying to stream music now and I'm sure this is what's causing the issue.

Thanks for your time,

Josh

[Rasika Nayanajith]

Do you have WLC managed APs? If so what is the software version you running & what are the AP models ? How many client can you see in a given AP when they have problems of video streams ?

Rasika

[ahcadmin1]

Yes, WLC version is 7.4.100.0.

I'd say around 20 users max at each AP.  Also, users aren't streaming video, just audio that I know of.

AP Model is 1262N-A-K9

[Scott Fella]

I would upgrade to v7.4.140.0 since that code is deferred.  20 users is not bad at all.  You might want to also post your show wlan <wlan id>.

-Scott

[ahcadmin1]

show wlan 6

WLAN Identifier.................................. 6
Profile Name..................................... Wifi
Network Name (SSID).............................. Wifi
Status........................................... Enabled
MAC Filtering.................................... Disabled
Broadcast SSID................................... Enabled
AAA Policy Override.............................. Disabled
Network Admission Control
Client Profiling Status ....................... Disabled
DHCP ......................................... Disabled
HTTP ......................................... Disabled
Radius-NAC State............................... Disabled
SNMP-NAC State................................. Disabled
Quarantine VLAN................................ 0
Maximum number of Associated Clients............. 0
Maximum number of Clients per AP Radio........... 200
Number of Active Clients......................... 82
Exclusionlist.................................... Disabled
Session Timeout.................................. 86400 seconds
User Idle Timeout................................ 300 seconds

--More-- or (q)uit
User Idle Threshold.............................. 0 Bytes
NAS-identifier................................... WLC
CHD per WLAN..................................... Enabled
Webauth DHCP exclusion........................... Disabled
Interface........................................ wifi
Multicast Interface.............................. Not Configured
WLAN IPv4 ACL.................................... unconfigured
WLAN IPv6 ACL.................................... unconfigured
mDNS Status...................................... Enabled
mDNS Profile Name................................ default-mdns-profile
DHCP Server...................................... Default
DHCP Address Assignment Required................. Disabled
Static IP client tunneling....................... Disabled
PMIPv6 Mobility Type............................. none
Quality of Service............................... Platinum
Per-SSID Rate Limits............................. UpstreamDownstream
Average Data Rate................................ 0 0
Average Realtime Data Rate....................... 0 0
Burst Data Rate.................................. 0 0
Burst Realtime Data Rate......................... 0 0
Per-Client Rate Limits........................... UpstreamDownstream
Average Data Rate................................ 0 0
Average Realtime Data Rate....................... 0 0

--More-- or (q)uit
Burst Data Rate.................................. 0 0
Burst Realtime Data Rate......................... 0 0
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
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................................ x.x.x.x 1812
Accounting.................................... Global Servers
Interim Update............................. Disabled
Dynamic Interface............................. Disabled
Dynamic Interface Priority.................... wlan

--More-- or (q)uit
Local EAP Authentication......................... Disabled
Security

802.11 Authentication:........................ Open System
FT Support.................................... Enabled
Static WEP Keys............................... Disabled
802.1X........................................ Disabled
Wi-Fi Protected Access (WPA/WPA2)............. Enabled
WPA (SSN IE)............................... Disabled
WPA2 (RSN IE).............................. Enabled
TKIP Cipher............................. Disabled
AES Cipher.............................. Enabled
Auth Key Management
802.1x.................................. Enabled
PSK..................................... Disabled
CCKM.................................... Disabled
FT-1X(802.11r).......................... Disabled
FT-PSK(802.11r)......................... Disabled
PMF-1X(802.11w)......................... Disabled
PMF-PSK(802.11w)........................ Disabled
FT Reassociation Timeout................... 20
FT Over-The-DS mode........................ Disabled
GTK Randomization.......................... Disabled

--More-- or (q)uit
SKC Cache Support.......................... Disabled
CCKM TSF Tolerance......................... 1000
WAPI.......................................... Disabled
Wi-Fi Direct policy configured................ Disabled
EAP-Passthrough............................... Disabled
CKIP ......................................... Disabled
Web Based Authentication...................... Disabled
Web-Passthrough............................... Disabled
Conditional Web Redirect...................... Disabled
Splash-Page Web Redirect...................... Disabled
Auto Anchor................................... Disabled
FlexConnect Local Switching................... Disabled
flexconnect Central Dhcp Flag................. Disabled
flexconnect nat-pat Flag...................... Disabled
flexconnect Dns Override Flag................. Disabled
FlexConnect Vlan based Central Switching ..... Disabled
FlexConnect Local Authentication.............. Disabled
FlexConnect Learn IP Address.................. Enabled
Client MFP.................................... Optional
PMF........................................... Disabled
PMF Association Comeback Time................. 1
PMF SA Query RetryTimeout..................... 200
Tkip MIC Countermeasure Hold-down Timer....... 60

--More-- or (q)uit
AVC Visibilty.................................... Disabled
AVC Profile Name................................. None
Flow Monitor Name................................ None
Call Snooping.................................... Disabled
Roamed Call Re-Anchor Policy..................... Disabled
SIP CAC Fail Send-486-Busy Policy................ Disabled
SIP CAC Fail Send Dis-Association Policy......... Disabled
KTS based CAC Policy............................. Disabled
Assisted Roaming Prediction Optimization......... Disabled
802.11k Neighbor List............................ Disabled
802.11k Neighbor List Dual Band.................. Disabled
Band Select...................................... Disabled
Load Balancing................................... Disabled
Multicast Buffer................................. Disabled

Mobility Anchor List
WLAN ID IP Address Status
------- --------------- ------

802.11u........................................ Disabled

MSAP Services.................................. Disabled

--More-- or (q)uit

(Cisco Controller) >

[Scott Fella]

I don't see anything wrong with the configuration on he WLAN. Have you been able to upgrade to v8.0.x?  Can you test by hard coding the client to 2.4ghz and test throughput and then test on the 5ghz only. Make sure you setup the device to only use one band at a time.  What devices also is having the issues. 

-Scott

*** Please rate helpful post ***

[Rasika Nayanajith]

First of all I would upgrade this WLC code to 8.0.120.0 (the current code listed defferred and not supported by TAC any longer)

http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn80mr2.html

I am not saying your issue is software code, but will get this done first and baseline with 8.0.x code.

HTH

Rasika

[mohanak]

you can configure the AP radio to select data rates on the basis of range or throughput. When you configure the AP radio to select data rates for range, the AP sets the lowest data rate to Basic and the other rates to Enabled. In this way, the AP can cover a wider area. However, the data rate comes down as the distance from the AP to the client increases. If you configure the AP radio for throughput, the AP sets all data rates to Basic. This configuration ensures a consistent throughput throughout the coverage area.

Refer to the Configuring Radio Data Rates section of Configuring Radio Settings for more information on how to configure the data rates on the AP radio.