Re: Wireless and download files

rdrayer985 · ‎03-07-2014

Good Morning

Actually I have some AP`s (1130) in my central office and other in remote office. I use a wireless device called Handheld (Motorola) to download an archive .cab but when I try to do this from server located to central office, it get to interrupt the connection for some reason. However in some remote office do not happen the same behavior. Routers in remote offices are connected throught ME and PPP connection. As a backup link I have an easy vpn connection. I did these tests and activities:

- I had to shut down interfaces (serial or ethernet) to flow traffic throught easy vpn. With this test I am sure that this type of traffic is not falling in default class.

-I upgraded WLC 5500 to 7.4.121.0 because I thought it was a bug in firmware 7.0.235.

-I reviewed bandwidth in WAN connection.

Did you happen this case in the past?

Regards

Rasika Nayanajith · ‎03-07-2014

Hi Richard,

If you could provide us "show client detail output from your WLC for a device having this issue, we can see what data rate that device is connected & typical RSSI/SNR of it.

7.4.121.0 is a recommended version & good to see you with that code.

HTH

Rasika

rdrayer985 · ‎03-07-2014

(Ftd_WLC_1) >show client detail 00:15:70:a8:90:90

Client MAC Address............................... 00:15:70:a8:90:90

Client Username ................................. HH_Cuartel_2

AP MAC Address................................... 00:1f:ca:83:c3:90

AP Name.......................................... AP_Cuartel_2

Client State..................................... Associated

Client NAC OOB State............................. Access

Wireless LAN Id.................................. 1

Hotspot (802.11u)................................ Not Supported

BSSID............................................ 00:1f:ca:83:c3:91

Connected For ................................... 44 secs

Channel.......................................... 1

IP Address....................................... 10.105.0.92

Gateway Address.................................. 10.105.255.250

Netmask.......................................... 255.255.0.0

Association Id................................... 1

Authentication Algorithm......................... Open System

Reason Code...................................... 1

Status Code...................................... 0

Client CCX version............................... No CCX support

Re-Authentication Timeout........................ 86334

QoS Level........................................ Silver

802.1P Priority Tag.............................. 2

--More-- or (q)uit

CTS Security Group Tag........................... Not Applicable

KTS CAC Capability............................... No

WMM Support...................................... Enabled

APSD ACs....................................... BK BE VI VO

Power Save....................................... ON

Current Rate..................................... 36.0

Supported Rates.................................. 1.0,2.0,5.5,11.0,6.0,9.0,

............................................. 12.0,18.0,24.0,36.0,48.0,

............................................. 54.0

Mobility State................................... Local

Mobility Move Count.............................. 0

Security Policy Completed........................ Yes

Policy Manager State............................. RUN

Policy Manager Rule Created...................... Yes

Audit Session ID................................. c0a801640000c560531a209b

IPv4 ACL Name.................................... none

IPv4 ACL Applied Status.......................... Unavailable

IPv6 ACL Name.................................... none

IPv6 ACL Applied Status.......................... Unavailable

Client Type...................................... SimpleIP

PMIPv6 State..................................... Unavailable

mDNS Status...................................... Enabled

mDNS Profile Name................................ default-mdns-profile

--More-- or (q)uit

No. of mDNS Services Advertised.................. 0

Policy Type...................................... WPA2

Authentication Key Management.................... 802.1x

Encryption Cipher................................ CCMP (AES)

Protected Management Frame ...................... No

Management Frame Protection...................... No

EAP Type......................................... EAP-FAST

Interface........................................ hhtiendas

VLAN............................................. 105

Quarantine VLAN.................................. 0

Access VLAN...................................... 105

Client Capabilities:

CF Pollable................................ Not implemented

CF Poll Request............................ Not implemented

Short Preamble............................. Implemented

PBCC....................................... Not implemented

Channel Agility............................ Not implemented

Listen Interval............................ 20

Fast BSS Transition........................ Not implemented

Client Wifi Direct Capabilities:

WFD capable................................ No

Manged WFD capable......................... No

Cross Connection Capable................... No

--More-- or (q)uit

Support Concurrent Operation............... No

Fast BSS Transition Details:

Client Statistics:

Number of Bytes Received................... 79472

Number of Bytes Sent....................... 89767

Number of Packets Received................. 770

Number of Packets Sent..................... 429

Number of Interim-Update Sent.............. 0

Number of EAP Id Request Msg Timeouts...... 0

Number of EAP Id Request Msg Failures...... 0

Number of EAP Request Msg Timeouts......... 1

Number of EAP Request Msg Failures......... 0

Number of EAP Key Msg Timeouts............. 1

Number of EAP Key Msg Failures............. 0

Number of Data Retries..................... 463

Number of RTS Retries...................... 70

Number of Duplicate Received Packets....... 17

Number of Decrypt Failed Packets........... 0

Number of Mic Failured Packets............. 0

Number of Mic Missing Packets.............. 0

Number of RA Packets Dropped............... 0

Number of Policy Errors.................... 0

Radio Signal Strength Indicator............ -78 dBm

--More-- or (q)uit

Signal to Noise Ratio...................... 16 dB

Nearby AP Statistics:

AP_Cuartel_1(slot 0)

antenna0: 23 secs ago.................... -82 dBm

antenna1: 23 secs ago.................... -79 dBm

AP_Cuartel_2(slot 0)

antenna0: 23 secs ago.................... -80 dBm

antenna1: 23 secs ago.................... -78 dBm

DNS Server details:

DNS server IP ............................. 180.185.1.19

DNS server IP ............................. 180.185.1.18

Assisted Roaming Prediction List details:

Client Dhcp Required: False

Rasika Nayanajith · ‎03-07-2014

Hi Richard,

As you can see devices is having -78dBm RSSI which is not that strong, indicating device is far from the AP. It is connected 36Mbps at the given time on CH1.

Current Rate..................................... 36.0

Supported Rates.................................. 1.0,2.0,5.5,11.0,6.0,9.0,12.0,18.0,24.0,36.0,48.0,

Radio Signal Strength Indicator............ -78 dBm

Signal to Noise Ratio...................... 16 dB

Is it possible to do a test with the device is closer to a AP & see still problem occurs. Also I would suggest disable low data rates 1,2,5.5,6,9,11 on your WLC 802.11b/g/n & 802.11a/n bands. That should help improving the overall performance on your wireless.

HTH

Rasika

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rdrayer985 · ‎03-07-2014

Hi Rasika

I checked these values in my WLC and all of them are disabled, I referred support rates. By the way I did a test take my wireless device closer an AP and this has the same behavior.

Regards

Scott Fella · ‎03-07-2014

Look at the show client detail and what is the RSSI value? Test with a laptop on the same SSID and test file transfers or use iperf.

Thanks,

Scott

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rdrayer985 · ‎03-08-2014

Hi Scott RSSI value is -78 dBm. I did this test with Iperf and got 20 Kbps. Regards

Leo Laohoo · ‎03-07-2014

Richard,

You said that the other site(s) have no issues? Are the APs from the other site(s) coming back to the same controller or to another controller?

rdrayer985 · ‎03-08-2014

Hi Leo All AP`s are registered in the same controller. This controller is located in central office.