1142n data rates - possible bug

[akisbouza]

I am having a 5508 WLC with some1142n LAPs. The problem is that wireless clients  connect to the 802.11N 5Ghz however something is wrong with the data rates.

When i do show controllers dot11radio 1 in the AP i get

Active Rates:  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.
Current Rates:  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.
Allowed Rates:  6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0

The allowed rates do not include the active rates.

I read that there is bug CSCti89945 but i am not the case as the controller came already with 7.0.98 version. I did not upgrade.

I have checked that i am using a WLAN with only  WPA2 and AES, i enabled  WWM and i ve already enabled 802.11n support.

I tested with an Ipad showing that the client connects with data rate m7.That means according to this http://en.wikipedia.org/wiki/IEEE_802.11n-2009

135-150 Mbps?

Thank you

[josuvarg]

MCS 7 is 72mbps at 20Mhz... If you want to get higher rates, like the 135mbps you said, you should use channel bonding (40mhz width)

[akisbouza]

I have already configured channel bonding however in the DCA Channel list i only see these channels 36, 40, 44, 48, 52, 56, 60, 64

When i enable Extended UNII-2 channels i see 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140

Is that correct for channel bonding?

[Leo Laohoo]

Depending on what your wireless NIC card:

1.  The so-called 300 mbps "N" rate is expressed in HALF duplex.  Halve the value and you get 150 mbps.

2.  Some wireless NIC cards doesn't really support 300 mbps.