Solved

Best practice DNS alias name length

Posted on 2010-09-16
6
2,001 Views
Last Modified: 2012-06-21
Dear forum,

My situation:
I need to create a DNS alias for a FQDN, to be configured (you could say "hard-coded") in configuration of an application to be installed on a number of PC's.
No user will be manually addressing the alias (e.g. such as www.mydomain.com) and the alias will be entered only once into application installation image.
On one hand I'd like a short alias name, but on the other I want to have a name which is clearly and easily indetifiable (such as applicationxyzlicenseserver.mydomain.com).
My DNS is integrated with Windows Server 2003/2008 AD.

My questions:
1. What is the maximum length of a DNS alias name in DNS integrated with Windows Server 2003/2008 AD?
2. Can you refer to a best practice document/guide, which covers the recommended maximum length (if any) for a DNS alias?
3. Is there something I must be cautious about in regards to "a long" DNS alias name in DNS integrated with Windows Server 2003/2008 AD?

What I am not interested in:
Documentation/guide which describes creation of DNS alias, but does not mention the recommended length of the alias name.

Kind regards,
Soren
0
Comment
Question by:slemmesmi
6 Comments
 
LVL 7

Accepted Solution

by:
myhc earned 334 total points
ID: 33690700
http://en.wikipedia.org/wiki/Domain_Name_System

The full domain name may not exceed a total length of 253 characters
0
 
LVL 7

Assisted Solution

by:myhc
myhc earned 334 total points
ID: 33690718
3. Not that i'm aware of. it's it's invalid then it won't let you set it.

(MCSE Aproved )
0
 
LVL 7

Expert Comment

by:myhc
ID: 33690725
(but not my spelling !!! Approved)
0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 
LVL 70

Assisted Solution

by:Chris Dent
Chris Dent earned 166 total points
ID: 33690727

Defined here:

http://www.ietf.org/rfc/rfc1035.txt

Each label can be a maximum of 63 characters (each character represented by a binary octet), and the total permissable length is 255 characters (including periods, dots).

Chris
0
 
LVL 39

Expert Comment

by:Krzysztof Pytko
ID: 33690762
In your case it doesn't matter if it is too long (not longer that byte range 255 characters). Because you will hard-code it in application, so it is better to use clear name in DNS for your eyes :) Application wouldn't recognize a difference :]
0
 
LVL 11

Author Comment

by:slemmesmi
ID: 33699620
@myhc: Your reply answer all my 3 questions and I will accept that as the solution.
@Chris-Dent: Your reply provides useful additional details, which I will accept as assisted solution.

Thanks for your answers - TGIF!
0

Featured Post

Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The recent Microsoft changes on update philosophy for Windows pre-10 and their impact on existing WSUS implementations.
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
This tutorial will give a short introduction and overview of Backup Exec 2012 and how to navigate and perform basic functions. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as conne…
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…

929 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now