Autonomous Mode Failing on Aironet 2702i-z-k9

[Bernardo_c]

Hi!
I made converted an 2702i from light to autonomous, changing the image to the version: flash:/ap3g2-k9w7-mx.153-3.JC/ap3g2-k9w7-xx.153-3.JC

This image have web interface very unstable (we need to apply many times the configuration to save) and recently I observed a very strange behaviour: the throughtput delivered in 5GHz (80MHz) are above 300Mbps normally, but with time (about four hours or more) the throughput drops to below 1Mbps. To eliminate the variable of hardware, I converted another equipment and this situation remains. 

Someone have any hint ? May be a "bugged" version ? Follows the running-config

version 15.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname ap
logging rate-limit console 9
no aaa new-model
clock timezone -0300 -3 0
no ip source-route
no ip cef
dot11 syslog
dot11 ssid charnis
authentication open
authentication key-management wpa version 2
guest-mode
wpa-psk ascii 7 045803071D2F455D5948
no ipv6 cef
bridge irb
interface Dot11Radio0
no ip address
encryption vlan 1 mode ciphers aes-ccm
encryption mode ciphers aes-ccm tkip
ssid charnis
antenna gain 18
traffic-metrics aggregate-report
stbc
speed basic-1.0 basic-2.0 basic-5.5 basic-11.0 basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15. m16. m17. m18. m19. m20. m21. m22. m23.
channel 2437
station-role root
infrastructure-client
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
encryption mode ciphers aes-ccm tkip
ssid charnis
antenna gain 18
traffic-metrics aggregate-report
peakdetect
no dfs band block
stbc
speed basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15. m16. m17. m18. m19. m20. m21. m22. m23. a1ss9 a2ss9 a3ss9
channel width 80
channel 5745
station-role root access-point
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
duplex full
speed 1000
bridge-group 1
bridge-group 1 spanning-disabled
no bridge-group 1 source-learning
interface GigabitEthernet1
no ip address
duplex auto
speed auto
bridge-group 1
bridge-group 1 spanning-disabled
no bridge-group 1 source-learning
interface BVI1
mac-address 2c33.1185.a810
ip address 172.16.18.5 255.255.255.0
ipv6 enable
ip default-gateway 172.16.18.1
ip forward-protocol nd
ip http server
no ip http secure-server
bridge 1 route ip
line con 0
line vty 0 4
login local
length 0
transport input all

Thanks!

[marce1000]

                          >... May be a "bugged" version ?
 - Have a try with the latest version : https://software.cisco.com/download/home/286256843/type/284180979/release/15.3.3-JPQ

 M.

[Bernardo_c]

Hi Marce! Thanks for your answer but unfortunately I don´t have smartnet contract to download this new image.I will try to get it and keep you posted.

Tks,

Bernardo

[Rasika Nayanajith]

Do not enable TKIP as encryption, that will resulting max 54Mbps. If you want to get MCS rates (higher data rates) it needs to be just AES. 
encryption mode ciphers aes-ccm tkip

HTH
Rasika
*** Pls rate all useful responses ***

[Bernardo_c]

Hi Rasika!

I´m making this modification and let´s see. Your recommendation make sense since more encryption loads more the firmware and processor.

Just a comment: when the AP degrades the bandwidth, I loose control of the equipment, not responding to any IP access (telnet/ssh or ICMP - not ping response), just via console port.

[Bernardo_c]

Hi @marce1000 I made the update as you recommended. Used two APs but still the same behaviour. Strange is not? I´m now using an Cambium e410 in the same switch and network without any issue. I want to use the 2702 since have a better performance (when fresh).

[RxTx]

I have no problems on 2702I-E-K9 with version: ap3g2-k9w7-tar.153-3.JF10.tar