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channel bonding configuration in cisco 2602i access point

Posted on 2013-10-24
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Last Modified: 2014-11-12
HI Team,

we have cisco 2602i access point and we are getting  data rate is 54Mbps  instead 300Mbps (as per data sheet)..
I have googled and came to know that there is a concept of Channel bonding to get high throughput.

Have anyone had chance working with  channel bonding in Autonomous AP, Is there any issue if we apply to AP instead changing AP’s default behaviour.

Pls advice…
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Question by:RAMU CH
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by:Craig Beck
ID: 39599916
You need to use WPA2/AES to be able to use the MCS rates.

Also, the 2.4GHz radio won't give you 300Mbps - this is only possible on the 5GHz radio.

Do you have a config file I can look at?
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by:RAMU CH
ID: 39600107
Hi ,

Pls find the config file..

Suggest the nnedfule commands for  How to configure MCS rates to get near 300Mbps

regards
ramu
Final-config-1602I-10.1.3.27.TXT
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by:Craig Beck
Craig Beck earned 500 total points
ID: 39600134
To enable 802.11n you need to do the following:

interface dot11radio0
 encryption mode ciphers tkip aes-ccm
interface dot11radio1
 encryption mode ciphers tkip aes-ccm


This will enable AES which is mandatory for 802.11n data-rates to be used.  Clients will still be able to use TKIP but the maximum data-rate will be 54Mbps.

To achieve 300Mbps clients must connect using 5GHz and AES.
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by:RAMU CH
ID: 39600194
Thanks but we have enabled WPA..


Is there any difference between WPA and AES.. ?


What data-rate should i configure in 802.11n radio channel to get 300Mbps ?

Thanks
Ram
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by:Craig Beck
Craig Beck earned 500 total points
ID: 39600206
No, there is a difference between TKIP and AES, but not between WPA and AES - they are different things.

WPA is the authentication method.
AES is the encryption method.

Generally WPA uses TKIP.  That's what you have at the moment.  To enable MCS (802.11n) rates you need to use WPAv2 with AES.

If you leave the data-rates as defaults you will be able to achieve 300Mbps.  However you will only achieve 300Mbps using 5GHz only.  Cisco don't support 40MHz channels at 2.4GHz so you will only ever achieve 144Mbps at 2.4GHz.
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by:RAMU CH
ID: 39600235
As this is dual band means 2.4 and 5 Ghz supports , can't we make 5 Ghz  to achieve 300Mbps
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by:Craig Beck
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The AP contains two radios - one 2.4GHz radio (Dot11Radio0) and one 5GHz radio (Dot11Radio1).

The 2.4GHz radio only supports a 20MHz channel-widths as the frequency only has three non-overlapping channels.  To put it simply, if you were to bond overlapping channels it would actually have a negative effect on throughput in a highly-populated environment.  This means you can only achieve 144Mbps with two spatial streams.

The 5GHz radio supports 20MHz and 40MHz channel-widths as there are a lot more channels to play with.  This means that you can achieve 300Mbps with two spatial streams if you use 40MHz channels.

The dual-band capability is purely to integrate a 2.4GHz radio and a 5GHz radio into the same unit.  Even thought the AP will broadcast on both frequencies simultaneously you can't use the 2.4GHz AND 5GHz at the same time on the client device to get faster data-rates.  It's 2.4GHz OR 5GHz.
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by:RAMU CH
ID: 39602336
I have configured as per your suggestion but couldn't get 300Mbps and i am getting
65Mbps on my mobile phone which support n channel...

ALl my associations connected to dot110 radio and it is not showing dot11 1 radio..

I have stopped dot11 0 radio by shut down command but clients are not associated with
dot11 1 radio even my mobile also

Here attaching configuration file ( see dot110 is shut and dot11 1 is active ) and
sh dot11 associations out put also
sh-run---2PM.TXT
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Craig Beck earned 500 total points
ID: 39602490
65Mbps is an 802.11n data-rate, so the AP is working.

Most mobile devices won't get anywhere near 300Mbps even if they do connect to the 5GHz radio.  The NIC in my netbook will only let me connect to my Cisco AP at 72Mbps.  It's not the AP's fault - just the client doesn't support the data-rates.

Look at the stats for my Samsung Galaxy S3 mobile at 2.4GHz...

ap#sho dot11 associations 38aa.3c00.0000
Address           : 38aa.3c00.0000 Name             : NONE
IP Address        : 192.168.0.38
Gateway Address   : 0.0.0.0
Netmask Address   : 0.0.0.0            Interface        : Dot11Radio 0
Device            : unknown            Software Version : NONE
CCX Version       : NONE               Client MFP       : Off

State             : Assoc              Parent           : self
SSID              : wireless
VLAN              : 80
Hops to Infra     : 1                  Association Id   : 1
Clients Associated: 0                  Repeaters associated: 0
Tunnel Address    : 0.0.0.0
Key Mgmt type     : WPAv2 PSK          Encryption       : AES-CCMP
Current Rate      : m7-2               Capability       : WMM ShortHdr ShortSlot
Supported Rates   : 12.0 18.0 24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2
Voice Rates       : disabled           Bandwidth        : 20 MHz
Signal Strength   : -53  dBm           Connected for    : 40630 seconds
Signal to Noise   : 33  dB            Activity Timeout : 44 seconds
Power-save        : Off                Last Activity    : 16 seconds ago
Apsd DE AC(s)     : NONE

Packets Input     : 56618              Packets Output   : 58293
Bytes Input       : 7782575            Bytes Output     : 60720308
Duplicates Rcvd   : 85                 Data Retries     : 15982
Decrypt Failed    : 0                  RTS Retries      : 0
MIC Failed        : 0                  MIC Missing      : 0
Packets Redirected: 0                  Redirect Filtered: 0
Session timeout   : 0 seconds
Reauthenticate in : never




Now look at the stats for my laptop at 2.4GHz...

ap#sho dot11 associations 2477.0300.0000
Address           : 2477.0300.0000     Name             : ap
IP Address        : 192.168.0.37
Gateway Address   : 0.0.0.0
Netmask Address   : 0.0.0.0            Interface        : Dot11Radio 0
Device            : ccx-client         Software Version : NONE
CCX Version       : 4                  Client MFP       : Off

State             : Assoc              Parent           : self
SSID              : wireless
VLAN              : 80
Hops to Infra     : 1                  Association Id   : 2
Clients Associated: 0                  Repeaters associated: 0
Tunnel Address    : 0.0.0.0
Key Mgmt type     : WPAv2 PSK          Encryption       : AES-CCMP
Current Rate      : m15-
             Capability       : WMM ShortHdr ShortSlot
Supported Rates   : 12.0 18.0 24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2
Voice Rates       : disabled           Bandwidth        : 20 MHz
Signal Strength   : -49  dBm           Connected for    : 663 seconds
Signal to Noise   : 43  dB            Activity Timeout : 20 seconds
Power-save        : Off                Last Activity    : 0 seconds ago
Apsd DE AC(s)     : NONE

Packets Input     : 11633              Packets Output   : 10223
Bytes Input       : 1889205            Bytes Output     : 6109915
Duplicates Rcvd   : 14                 Data Retries     : 405
Decrypt Failed    : 0                  RTS Retries      : 0
MIC Failed        : 0                  MIC Missing      : 0
Packets Redirected: 0                  Redirect Filtered: 0
Session timeout   : 0 seconds
Reauthenticate in : never


See the difference?  The mobile only supports MCS rates up-to M7, while the laptop supports all of the 802.11n data-rates.  This explains why you're not seeing the full bandwidth you expect.

Notice the bandwidth is 20MHz too.  If this was a 5GHz radio the bandwidth would likely be 40MHz and therefore the throughput would be double.  The data-rates would still be the same though.
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by:Craig Beck
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Just to show you what I mean at 5GHz, this is my laptop connected at 300Mbps...

ap#sho dot11 assoc 2477.0300.0000
Address           : 2477.0300.0000     Name             : ap
IP Address        : 192.168.0.37
Gateway Address   : 0.0.0.0
Netmask Address   : 0.0.0.0           Interface        : Dot11Radio 1
Device            : ccx-client         Software Version : NONE
CCX Version       : 4                  Client MFP       : Off

State             : Assoc              Parent           : self
SSID              : wireless
VLAN              : 80
Hops to Infra     : 1                  Association Id   : 2
Clients Associated: 0                  Repeaters associated: 0
Tunnel Address    : 0.0.0.0
Key Mgmt type     : WPAv2 PSK          Encryption       : AES-CCMP
Current Rate      : m15-               Capability       : WMM 11h
Supported Rates   : 12.0 18.0 24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2
Voice Rates       : disabled           Bandwidth        : 40 MHz
Signal Strength   : -55  dBm           Connected for    : 56 seconds
Signal to Noise   : 39  dB            Activity Timeout : 20 seconds
Power-save        : Off                Last Activity    : 0 seconds ago
Apsd DE AC(s)     : NONE
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Author Comment

by:RAMU CH
ID: 39602524
I am from India..to connect 5Ghz ( dot 1 ) channel do in need License ?

If not required , How to manual association to a laptop with dot 1 radio?

Regards
ramu
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by:Craig Beck
Craig Beck earned 500 total points
ID: 39602526
You don't need a special license to connect to 5GHz in India.

Your laptop needs to have an 802.11a/n WLAN NIC though.
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by:RAMU CH
ID: 39602533
Thanks for the info..

Will you pls share your configuraiton so that i will paste and test here as i am infornt of my customer and needs to show the result now

My AP is cisco 1602 i

Regards
ramu
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by:Craig Beck
Craig Beck earned 500 total points
ID: 39602535
Config is...

dot11 ssid wireless
 authentication open
 authentication key-management wpa
 guest-mode
 wpa-psk ascii 0 presharedkey
!
interface dot11radio0
 encryption mode ciphers aes-ccm
 ssid wireless
 no shutdown
!
interface dot11radio1
 encryption mode ciphers aes-ccm
 ssid wireless
 no shutdown
!
interface bvi1
 ip address 192.168.0.1 255.255.255.0
 no shutdown
!

Open in new window


That is all you need.  I would factory-reset the AP before you apply the configuration.
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Author Closing Comment

by:RAMU CH
ID: 39705430
Tks
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Expert Comment

by:Skyggna
ID: 40437405
This is not all that is needed. The resulting setup would only allow for 144Mbps.   In a 5Ghz radio you would need to add typically under dot11radio1 the following.

int dot11radio1
 speed  basic-12.0 18.0 24.0 36.0 48.0 54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15.
 channel width 40-above

This would enable 300Mbps bandwidth.  The actual speed you might want could be different from this. Basic translates to mandatory.
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