Wireless Access

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Channel 120-132 Usage

Hi,

 

I see in the Aruba design guide for high density wlans that channel 120-132 is not allowed for US and most of the world.

 

When I look at the allowed channels on the controller it shows something different.

 

(Aruba) #show ap allowed-channels country-code gb

Allowed Channels for Country Code "GB" Country "United Kingdom"
---------------------------------------------------------------
PHY Type                 Allowed Channels
--------                 ----------------
802.11g (indoor)         1 2 3 4 5 6 7 8 9 10 11 12 13
802.11a (indoor)         36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140
802.11g (outdoor)        1 2 3 4 5 6 7 8 9 10 11 12 13
802.11a (outdoor)        100 104 108 112 116 120 124 128 132 136 140
802.11g 40MHz (indoor)   1-5 2-6 3-7 4-8 5-9 6-10 7-11
802.11a 40MHz (indoor)   36-40 44-48 52-56 60-64 100-104 108-112 116-120 124 128 132 136 140
802.11g 40MHz (outdoor)  1-5 2-6 3-7 4-8 5-9 6-10 7-11
802.11a 40MHz (outdoor)  100-104 108-112 116-120 124-128 132-136
802.11a (DFS)            52 56 60 64 100 104 108 112 116 120 124 128 132 136 140

(Aruba) #show ap allowed-channels country-code us

Allowed Channels for Country Code "US" Country "United States"
--------------------------------------------------------------
PHY Type                 Allowed Channels
--------                 ----------------
802.11g (indoor)         1 2 3 4 5 6 7 8 9 10 11
802.11a (indoor)         36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165
802.11g (outdoor)        1 2 3 4 5 6 7 8 9 10 11
802.11a (outdoor)        52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165 
802.11g 40MHz (indoor)   1-5 2-6 3-7 4-8 5-9 6-10 7-11
802.11a 40MHz (indoor)   36-40 44-48 52-56 60-64 100-104 108-112 116-120 124-128 132-136 149-153 157-161
802.11g 40MHz (outdoor)  1-5 2-6 3-7 4-8 5-9 6-10 7-11
802.11a 40MHz (outdoor)  52-56 60-64 100-104 108-112 116-120 124-128 132-136 149-153 157-161
802.11a (DFS)            52 56 60 64 100 104 108 112 116 120 124 128 132 136 140

 So what is it then?  Are they allowed or not?

 

Thanks


If my post is helpful please give kudos, or mark as solved if it answers your post.

ACCP, ACMP, ACMX #294
mclarke@arubanetworks.com
Retired Employee

Re: Channel 120-132 Usage

Here is a document that describes " interim plans to approve UNII devices operating in the 5470 - 5725 MHz band with radar detection and DFS capabilities" 

 

http://fjallfoss.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41732

--
HT
Guru Elite

Re: Channel 120-132 Usage

They are allowed, depending on ap, but most clients do not scan for them, so they are not advised in most situations.

 



Colin Joseph
Aruba Customer Engineering

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