WiFi Noob

[chrisgerke]

Just getting started with WiFi, could someone please let me know the affects of having a wrong ip name-server defined? Apart from not being able to ping a host name on the cli does it affect connected clients?

Thanks in advance.

[George Stefanick]

That's about it .. Clients should still connect. Just can't use their name ..

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[chrisgerke]

Thanks, I've just started playing a bit and trying to figure out why our iPhone and iPad users are getting some issues. Found that 5 of the 7 1200 series APs had the wrong Name server. All corrected now, iPhones and iPads still seem to have problems connecting after wake, thinking its a client issue after reading a few posts about it.

[George Stefanick]

Autonomous or controller ?

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[chrisgerke]

Autonous

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[Abhishek Abhishek]

IP address of the DNS server is specified with the ip name-server command. So, if you have wrong ip name-server defined you will not be able to reach or ping the hosts outside your subnet.

[chrisgerke]

In my case the correct DNS was being supplied by my MS dhcp server, just unsure if the incorrect name server settings in the APs was adding to my connectivity woes.

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[Angus Bishop]

Just try by enabling the checkbox for aironot in the advanced tab of ssid . I had a similar issue with my iphones and ipads . Just try if it helps .


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[chrisgerke]

Aironot?

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[George Stefanick]

So the DNS the client has is where the DNS will get resolved ..

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[George Stefanick]

Post your config of your autonomous ap .. Lets take a peek and see if we can find anything odd ..

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[George Stefanick · Accepted solution]

Chris how did those changes go ?

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"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
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‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

[chrisgerke]

Just for the benefit of anyone reading this... I couldn't post my config due to privacy. But George directed me to the fact that there is a known issue with Apple devices when using mixed modes.

Standard is WPA/TKIP and WPA2/AES

On pre 12.4 IOS the authentication option "authentication key-management wpa version 2" is not available, so either upgrade to 12.4 or stick with WPA/TKIP.

First time I've taken part in Cisco support forum other than reading posts. If I get responses as quick as this I'll be an active member

[Rob Huffman]

Hey George,

Great follow-up here my friend! 5

You've made yet another happy person here @ CSC!

Cheers!

Rob

"A smile relieves a heart that grieves" 

- Stones