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Aironet 1602i Standalone Slow Transfer Speed

rustydusty1717
Level 1
Level 1

Hello,

 

Recently purchased 3 of these units and have them working fine, however I am receiving terribly slow transfer speeds from any server, or storage device I try to send or receieve. Fastest I can get is 2.5MB/s or 20Mb/s on all three. Very basic setup with broadcasting a single SSID on each with WP2 AES, using channels 11, 6 and 1 across the three. Brand new building, no other buildings near to cause interference with.

 

 

 

 

9 Replies 9

Sandeep Choudhary
VIP Alumni
VIP Alumni

Paste the out put of the commands:

sh wlan <wlan id>

 

also paste the conifg where wlc and AP connected to switch.

which type of access point are you using ???

 

Regards

Hello,

 

Sorry to dig up an old topic but this problem is still happening. I have just ordered an additional one of these as our wireless continues to grow, which it should have the latest firmware so we will see if that helps.

 

Here is the latest config on one of them:

 


!
! Last configuration change at 16:57:56 -0700 Fri Mar 27 2015
! NVRAM config last updated at 16:58:14 -0700 Fri Mar 27 2015
! NVRAM config last updated at 16:58:14 -0700 Fri Mar 27 2015
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname ap1
!
!
logging rate-limit console 9
enable secret 5 $1$0O/f$3da6LZAT28Go5ga8WYIbv0
!
no aaa new-model
clock timezone -0700 -7 0
no ip routing
no ip cef
ip domain name ad.digitex.ca
ip name-server 192.168.1.20
!
!
!
dot11 syslog
!
dot11 ssid Digitex-Canada
   authentication open 
   authentication key-management wpa version 2
   guest-mode
   infrastructure-ssid optional
   wpa-psk ascii 7 02522B08582956721F6E5D5844
!
!
crypto pki token default removal timeout 0
!
!
username Cisco password 7 123A0C041104
!
!
bridge irb
!
!
!
interface Dot11Radio0
 no ip address
 no ip route-cache
 !
 encryption mode ciphers aes-ccm 
 !
 ssid Digitex-Canada
 !
 antenna gain 0
 stbc
 beamform ofdm
 channel 2462
 station-role root
 bridge-group 1
 bridge-group 1 subscriber-loop-control
 bridge-group 1 spanning-disabled
 bridge-group 1 block-unknown-source
 no bridge-group 1 source-learning
 no bridge-group 1 unicast-flooding
!
interface Dot11Radio1
 no ip address
 no ip route-cache
 shutdown
 antenna gain 0
 dfs band 3 block
 channel dfs
 station-role root
 bridge-group 1
 bridge-group 1 subscriber-loop-control
 bridge-group 1 spanning-disabled
 bridge-group 1 block-unknown-source
 no bridge-group 1 source-learning
 no bridge-group 1 unicast-flooding
!
interface GigabitEthernet0
 no ip address
 no ip route-cache
 duplex auto
 speed auto
 bridge-group 1
 bridge-group 1 spanning-disabled
 no bridge-group 1 source-learning
!
interface BVI1
 ip address 192.168.1.38 255.255.255.0
 no ip route-cache
!
ip default-gateway 192.168.1.6
ip forward-protocol nd
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
 transport input all
!
sntp server 64.4.10.33
sntp broadcast client
end

 

I'm having this issue as well, and we have 5 1602i series APs in autonomous mode.

I tried setting the 5 GHz radio to 40-above as suggested, but the AP was unaffected. 

I factory reset an AP and tested it again with 15.2.4-JB6 IOS and it gets expected throughput without any Encryption.

I then enabled Encryption as AES CCMP and turned on WPAv2 as mandatory.  The throughput immediately dropped to roughly 4 Mbps each direction.

I upgraded to 15.3.3-JAB, which is the latest firmware.  I factory reset the AP again and got expected throughput.  Then I enabled Encryption and turned on WPAv2 and the same drop happened.

I tried to just do a basic 40-bit WEP key, and even that killed the throughput.

It seems to be isolated to the Encryption and SSID security, but I have no idea what's causing it.

 

 

Update: IOS ver 15.2.2.JB2 seems to work fine with Encryption.

Scott Fella
Hall of Fame
Hall of Fame
I have clients that are also experiencing slowness with these 1602's. I'm waiting to see what TAC comes up with to be honest. I have tested this in a lab and it's fine, but maybe it's an issue when you have a bunch of these.... Who knows.
-Scott
*** Please rate helpful posts ***

Scott Fella
Hall of Fame
Hall of Fame
Disable WMM and try again. If that helps, then inwouldnopen a TAC case.
-Scott
*** Please rate helpful posts ***

rustydusty1717
Level 1
Level 1

Still having the issue. Here's the config file:

 

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname ap1

!

!

logging rate-limit console 9

enable secret 5 $1$0O/f$3da6LZAT28Go5ga8WYIbv0

!

no aaa new-model

no ip routing

no ip cef

ip domain name ad.digitex.ca

ip name-server 192.168.1.20

!

!

!

dot11 syslog

!

dot11 ssid DC

   authentication open

   authentication key-management wpa version 2

   guest-mode

   infrastructure-ssid optional

   wpa-psk ascii 7 1546245F570572777B1361

!

!

crypto pki token default removal timeout 0

!

!

username Cisco password 7 123A0C041104

!

!

bridge irb

!

!

!

interface Dot11Radio0

no ip address

no ip route-cache

!

encryption mode ciphers aes-ccm

 !

ssid Digitex Canada

!

antenna gain 0

stbc

beamform ofdm

channel 2462

station-role root

bridge-group 1

bridge-group 1 subscriber-loop-control

bridge-group 1 spanning-disabled

bridge-group 1 block-unknown-source

no bridge-group 1 source-learning

no bridge-group 1 unicast-flooding

!

interface Dot11Radio1

no ip address

no ip route-cache

shutdown

antenna gain 0

dfs band 3 block

channel dfs

station-role root

bridge-group 1

bridge-group 1 subscriber-loop-control

bridge-group 1 spanning-disabled

bridge-group 1 block-unknown-source

no bridge-group 1 source-learning

no bridge-group 1 unicast-flooding

!

interface GigabitEthernet0

no ip address

no ip route-cache

duplex auto

speed auto

bridge-group 1

bridge-group 1 spanning-disabled

no bridge-group 1 source-learning

!

interface BVI1

ip address 192.168.1.38 255.255.255.0

no ip route-cache

!

ip default-gateway 192.168.1.1

ip forward-protocol nd

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

transport input all

!

end

is there any reason why you have shutdown radio1 (5GHz) ? if you want higher throughput you have to use 5GHz band with channel bonding (40MHz). Something similar below under radio1 would do it.

interface Dot11Radio1
 ssid Digitex Canada
 channel width 40-above
 encryption mode ciphers aes-ccm
 no shut

 

Then if you clients are capable of 5GHz will get benefits. Below chart give data rates you can get depend on spatial streams client could support & CH Bandwidth.

MCS

 

Post "show dot11 associations <client_MAC>" output once you do this to see what data rate client get associated

HTH

Rasika

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

abwahid
Level 4
Level 4

Hi,

As Access-point 1602i support 'b/g/n' for 2.4GHz and which is definitely backward compatible with the b-clients, so you need to make sure your client should be in 'b/g/n' or in 'n' only mode to get better through put

and before taking the throughput reading check the connection speed at your client device.

 

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