Are all wifi protocols backwards compatible?

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802.11
802.11g
802.11n
Wireless
Wireless Access Points
Wireless in 2010
Wireless standards
Are all the wifi protocols backwards compatible? Are there any exceptions? I am talking about a Wireless 80211N router being able to communicate with 80211a-g wireless cards.

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yes you can communicate with it. should not give you any problem. at home i have a mixture of N and G running and it works fine

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Labnuke99:

802.11A operates on the 5GHz spectrum (54Mb/s max). 802.11B (11Mb/s) / 802.11G (54Mb/s) operate at 2.4GHz spectrum. 802.11A is NOT compatible with 802.11B/G. So, not all wi-fi protocols are backwards compatible.

802.11N operates in both the 5GHz and 2.4GHz spectrum but is only compatible with 802.11G.

For more information see the SearchNetworking guide on 802.11.

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  • Sixball
    and its not so much the protocol being backwards-compatible, but more of your harware supporting the older standards. Most routers these days use a B/G/N mix..
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