Wireless Access

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DNS Problem

I am having problems with a site that is not resolving DNS for WLAN clients (192.168.100.x), however, DNS is configured properly and works properly from the controller CLI.   I have serveral sites with identical configurations and have never seen this issue before.  Any advice would be greatly appreciated.

 

The site in question has a 650 controller running ArubaOS 6.1.2.5.  Here are my DNS entries from the configs (the x.x.x.x's are confirmed working DNS servers):

 

!
ip dhcp pool 172-AP-pool
 default-router 172.16.100.1
 dns-server x.x.x.x  x.x.x.x  
 network 172.16.100.0 255.255.255.0

!
ip dhcp pool guest
 default-router 192.168.100.1
 dns-server x.x.x.x  x.x.x.x

 network 192.168.100.0 255.255.255.0

 

 

Aruba Employee

Re: DNS Problem

Does the role that the clients are being place into allow DNS?

 

Do a "show user-table" and note the role for any of the users.  Then, do "show rights <role name>" and make sure there is an ACL entry that either allows all traffic or at least allows svc-dns (and is above any rules that might deny that same traffic... ACLs are processed in top down order - first match).

 

Aruba Employee

Re: DNS Problem

Can you reach the DNS server from the client with ping / traceroute? The server may be working but you could have a NAT issue. Was this site working previoulsy? I'm also guessing that the controller has a routable public IP. The clients are getting the correct DNS as well I assume. 

 

-awl

Andy Logan, ACDX
Director, Strategic Account Solutions
Aruba Networks
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