Documentation should match the product. And the product should match what is needed in practice (IMHO). With DNS being critical for most applications these days, it should be reliable and high available. Different products can have different strategies when it comes to selecting a DNS server, but in most cases it's primary, secondary, etc. Which means that if the primary DNS server is not responding, only after some time it will fall back to the secondary, and so on. So for best performance, your primary DNS should not even fail. The time you are at the 4th DNS server in your list, you probably have other things to worry about than having a 4th as backup. And if the first 2 (or 3) fail, what are the chances that a 4th would work? But that's more practical, and my personal view.
Thanks Oliver for bringing this to the attention of the documentation writes, so the documentation can be fixed to reflect the product.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: Nov 07, 2024 09:42 AM
From: Russ_Altorfer
Subject: 6300 dns server-address number
Yeah, that is a good suggestion to point the first two to the closest server then to another region as back up.
Original Message:
Sent: Nov 07, 2024 09:03 AM
From: Daniel Ruiz
Subject: 6300 dns server-address number
Hello Oliver and Russ,
Yes, that's correct. 3 ip server address maximum and up to 6 ip domain name. This information, as you say, will come out of the CLi if you try to add any more of the account or if you do it through the template in Aruba Central, you will see it in audit control.
As a tip, you can point the first two server addresses to the region where the switch is located and the third one to the other region, as a backup.
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Daniel Ruiz
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Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support.
Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC.
Original Message:
Sent: Nov 07, 2024
From: Oliver Wehrli
Subject: RE: 6300 dns server-address number
Ok I found the reference as well. Fundamentals Guide and CLI bank mention 6 name servers in the description.
Let me get this verified and corrected. AFAIK 3 servers (as confirmed from your switch CLI) is the correct number across all CX platforms.
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I work for Aruba. Any opinions expressed here are solely my own and not do not represent that of Hewlett Packard Enterprise or Aruba.
Original Message:
Sent: Nov 07, 2024 08:13 AM
From: Oliver Wehrli
Subject: 6300 dns server-address number
Which documentation are you reading stating you can configure more?
Max. 3 servers sounds right. That is consistent across all CX models/versions.
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I work for Aruba. Any opinions expressed here are solely my own and not do not represent that of Hewlett Packard Enterprise or Aruba.
Original Message:
Sent: Nov 06, 2024 11:31 AM
From: Russ_Altorfer
Subject: 6300 dns server-address number
Hello,
I am looking through a configuration for a 6300 that we have. Per all the documentation that I am reading, my 6300 should be able to have a total of 6 dns server-addresses. When I go to apply more than three the switch will not allow it. I have four DNS servers I want to add; 10.103.50.32, 10.103.50.34, 10.106.50.32, 10.103.50.34
I was running version 10.13.1040 on the switch; I upgraded to 10.13.1050 and I am getting the same error with both versions.I realize that 2 servers would be sufficient. My company does not have a policy of applying the DNS servers, they have only ever done the 3 that the switch allows. Since previous configs apply 3 and not 2, I am assuming to apply all of the servers we have, which is 4. The only reason I can think of as to why we have 4 is that we have 2 DNS servers in 2 different geographical locations. This provides DNS redundancy, with 2 links for redundancy and possible load balancing for each location.
Any thoughts? Has this happened to anyone else?