Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Best practice DNS alias name length

Posted on 2010-09-16
6
Medium Priority
?
2,150 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 7

Accepted Solution

by:
myhc earned 1336 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 1336 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
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 71

Assisted Solution

by:Chris Dent
Chris Dent earned 664 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

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Background Information Recently I have fixed file server permission issues for one of my client. The client has 1800 users and one Windows Server 2008 R2 domain joined file server with 12 TB of data, 250+ shared folders and the folder structure i…
Resolving an irritating Remote Desktop connection that stops your saved credentials from being used.
This tutorial will give a an overview on how to deploy remote agents in Backup Exec 2012 to new servers. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as connecting to a remote Back…
This tutorial will walk an individual through the steps necessary to configure their installation of BackupExec 2012 to use network shared disk space. Verify that the path to the shared storage is valid and that data can be written to that location:…

715 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