Skype file transfer slow on WLC

[syedhashmi455]

Hi Every one,

I am trying to transfer a file from skype over cisco WLC, but the transfer is very slow (over an hour) for a small kb of file. The same setup is running fine if I do it on local intranet.

I have also enabled the peer to peer blocking mode in WLC, but in vain.

Some one please help me on this as this is very urgent for me.

Regards,

SIAH

[syedhashmi455]

Guys, please help me on this.....I am stuck and need a quick resolution.

[Rasika Nayanajith]

Are these file transfer happening two wireless end points connect two APs manged by same WLC ? If it is the case, pls attach "show client detail <mac_address>"  & "show wlan <wlan_id> outputs 

Point to Point Blocking should be "disabled" if you transfer file between two wireless clients.

HTH

Rasika

**** Pls rate all useful responses ****

[syedhashmi455]

Hello every one,

Attached are the results of the commands

WLAN Identifier.................................. 2

Network Name (SSID).............................. VP-Net

Status........................................... Enabled

MAC Filtering.................................... Disabled

Broadcast SSID................................... Enabled

AAA Policy Override.............................. Disabled

Number of Active Clients......................... 60

Exclusionlist Timeout............................ 60 seconds

Session Timeout.................................. Infinity

Interface........................................ vip-sps

WLAN ACL......................................... unconfigured

DHCP Server...................................... Default

Quality of Service............................... Silver (best effort)

WMM.............................................. Disabled

802.11e.......................................... Disabled

Dot11-Phone Mode (7920).......................... Disabled

Wired Protocol................................... None

IPv6 Support..................................... Disabled

Radio Policy..................................... 802.11B and 802.11G only

Security

--More-- or (q)uit

802.11 Authentication:........................ Open System

Static WEP Keys............................... Disabled

802.1X........................................ Disabled

Wi-Fi Protected Access (WPA1)................. Disabled

Wi-Fi Protected Access v2 (WPA2).............. Enabled

WPA Compatibility Mode:......................... Enabled

WPA2-TKIP Mode:................................. Enabled

Pre-Shared Key Mode:............................ Enabled

IP Security................................... Disabled

IP Security Passthru.......................... Disabled

Web Based Authentication...................... Disabled

Web-Passthrough............................... Disabled

Auto Anchor................................... Disabled

Cranite Passthru.............................. Disabled

Fortress Passthru............................. Disabled

show clinet  detail 78:6c:1c:d5:17:86

Client MAC Address............................... 78:6c:1c:d5:17:86

Client Username ................................. N/A

AP MAC Address................................... 00:1e:4a:90:39:60

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

Wireless LAN Id.................................. 2

BSSID............................................ 00:1e:4a:90:39:61

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

IP Address....................................... 10.16.60.170

Association Id................................... 176

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

Reason Code...................................... 0

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

Session Timeout.................................. 0

Re-Authentication Timeout........................ 0

Mirroring........................................ Disabled

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

Diff Serv Code Point (DSCP)...................... disabled

802.1P Priority Tag.............................. disabled

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

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

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

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

--More-- or (q)uit

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

NPU Fast Fast Notified........................... Yes

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

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

EAP Type......................................... Unknown

Interface........................................ vip-sps

VLAN............................................. 1001

Client Capabilities:

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

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

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

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

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

Listen Interval............................ 0

Client Statistics:

Number of Bytes Received................... 997374

Number of Bytes Sent....................... 3970680

Number of Packets Received................. 8275

Number of Packets Sent..................... 4625

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

Radio Signal Strength Indicator............ -52 dBm

Signal to Noise Ratio...................... 45 dB

Nearby AP Statistics:

--More-- or (q)uit

TxExcessiveRetries: 0

TxRetries: 0

RtsSuccessCnt: 0

RtsFailC nt: 0

TxFiltered: 0

TxRateProfile: [0,0,0,0,0,0,0,0,0,0,0,0]

ZFP_FFSW_ID_DEPT(slot 0) 548 seconds ag.... -89 dBm

ZFP_GFNW_SHFOFFIC(slot 0) 557 seconds a.... -78 dBm

ZFP_FFNW_NEAR_CGD(slot 0) 47 seconds ag.... -77 dBm

ZFP_SG_SOUTHWING(slot 0) 2275 seconds a.... -94 dBm

ZFP_SG_NORTHWING(slot 0) 548 seconds ag.... -87 dBm

ZFP_GFNW_MIS_DEPT(slot 0) 47 seconds ag.... -47 dBm

ZFP_GFNW_NEAR_SHF(slot 0) 538 seconds a.... -83 dBm

ZFP_GFNW_NEAR_DAT(slot 0) 47 seconds ag.... -76 dBm

Regards,

SIAH

[Rasika Nayanajith · Accepted solution]

The software version you are running is very very old. If WLC is 4400 or 2100 I would like you to upgrade it to 7.0.250.0.

Once you do that upgrade, then you should modify few of your WLAN settings.

- WMM should be enabled
- WPA2/AES should be enable

- WPA2/TKIP should be disable

Without upgrading WLC you may not able to do all required WLAN configuration.

HTH

Rasika

**** Pls rate all useful responses ****

[syedhashmi455]

Hello Friends,

I have just figured out some thing.

The file transfer between 2 PC's running on same SSID is very quick. Say 30MB of file is transferred on skype in less than a minute.

But if I do a file transfer from local LAN with a proxy server to a PC connected wirelessly, it takes over an hour.

The LAN has a bandwidth of 4MB and ISP side is 20MB.

Also, a PC from a different ISP is taking ages to send a file on a PC connected wirelessly in my network.

PLease share some light on this guys........Is it because of the software of WLC that is creating a problem or some thing else.

[ali aqrabawi]

Hello,

as the file is taking more than one hour, so please check on the proxy server or the client it self , 

here is why:

1)the client signal and SNR ratio are perfect , we should ecxlude any interference or noise related issue ,

2)as the file take one hour so if we look into the traces we would see alot of TCP RST sent from the server , 

3)it should be a TCP traffic related issue with the both ends (client and server)

--have you tested the same senario with different client types ?

--to get the best wireless performence , test the same with open WLAN ,

--did you modified the changes that Riska suggested ?

[syedhashmi455]

No, The software upgrade is not updated. It is still running on the old one.

[Dhiresh Yadav]

Hi,

Are you running 8.0 ? As their is rate limiting feature there per application (not all application) .Also if the skype is slow ..it should be for all the application.

Regards

Dhiresh

[syedhashmi455]

the software version is 3.2.195.10

[Ali Aqrabawi]

does these files goes through mobility tunnels ?

[syedhashmi455]

No, the file transfer is between 2 PC's, both connected on same SSID of WLC, but at a very slow rate.

For a small kb, it take around an hour.