Tuesday, February 19, 2013

Disabling 6 and 9 mb/s Cisco 1310 bridges

We all know the benefits of trimming off 802.11b from your 2.4 GHz network.  The task is quite easy, so here goes:
 
I trimmed off 802.11b entirely with the command:
 
interface Dot11Radio0
speed only-ofdm
 
I then attempted to trim off the lower two OFDM data rates.  I consulted the manual on how to do so, and here is what I found: (READ VERY CAREFULLY)
 
 
 
and entered in the following command:
 
interface Dot11Radio0
no speed basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
 
The result was that all data rates were disabled except 6 & 9 mb/s.
 
Show run:
!
interface Dot11Radio0
!
 speed  basic-6.0 basic-9.0
 
The command entered to disable the lower two data rates actually did the opposite!
 
Here's the "fix" - or what worked for me.
config t
interface Dot11Radio0
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 (restored it the way it was)
no speed basic-6.0 basic-9.0 (removed the lower two data rates)
 
The "fix" is the way I would have done it in the first place, until I found the manual and read it.  Did I interpret the manual incorrectly?
 
 

2 comments:

  1. I'd have agreed with your fist assessment. Define what is Basic, then turn off those you don't want. The manual's example felt a bit 'off'. Thanks for sharing this.

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  2. speed basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0

    This would have done the trick. The manual looks to have accidentally put a no in there.

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