dual dhcp servers serving same scope possible 4 windows2008?
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13 марта 2012 г. 2:26
ad2008,dc1:windows2008 SE,dc2:windows 2008r2 ent serving as dhcp server.
i'd like to deploy dc1 as a 2nd dhcp server,and then both servers could update automatically from the other one.
for redudancy purpose.
if yes,then how?
xptking@hotmail.com
Все ответы
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13 марта 2012 г. 3:22
Yes, it is possible. It's called a split-scope. The following links should help you get familiar with it.
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DHCP Step-by-Step Guide: Demonstrate DHCP Split Scope with Delay on a Secondary Server in a Test Lab
http://technet.microsoft.com/en-us/library/ee405264(WS.10).aspxDHCP - How to configure split-scope using wizard
"Split-scope configuration (Widely known as 80/20 Configurations) is typically considered as high-availability deployment scenario for the DHCP Server. It involves configuring scopes with the same subnet address and subnet mask and configuration on two distinct DHCP Servers."
http://blogs.technet.com/b/teamdhcp/archive/2009/01/22/how-to-configure-split-scope-using-wizard.aspxWindows 2008R2 features part V: DHCP Split-scope
http://blog.studiographic.nl/?p=219Two great threads on DHCP Failover, including a post from Obi Wan about a 100/100 rule using four servers and adding a bit to the mask to increase it. Please read for specifics:
Technet Thread - DHCP Failover
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/b384c07c-008f-4176-aee9-643288292321/
and
TechNet Thread - DHCP Failover:
http://social.technet.microsoft.com/Forums/en-US/winserverDS/thread/d0d6b210-c57c-4a05-8763-a6a67895ace5/.
Ace Fekay
MVP, MCT, MCITP Enterprise Administrator, MCTS Windows 2008 & Exchange 2007 & Exchange 2010, Exchange 2010 Enterprise Administrator, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Complete List of Technical Blogs: http://www.delawarecountycomputerconsulting.com/technicalblogs.phpThis posting is provided AS-IS with no warranties or guarantees and confers no rights.
- Помечено в качестве ответа Tiger LiModerator 16 марта 2012 г. 7:13
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13 марта 2012 г. 7:59
thx.
does it mean that i can manage the very same scope with 2 dhcp server?
or i have to splip ip scope into 2 sub-scope?
xptking@hotmail.com
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13 марта 2012 г. 11:27
No, you must split the scope among two different servers, such as 80/20.
However, if you want 100/100, you would double your subnet range. For example, if you have a /24, then double it to a /23, and put a /24 on one DHCP, and the other /24 on the other DHCP. Read the link I posted with 100/100 in it for details.
Ace
Ace Fekay
MVP, MCT, MCITP Enterprise Administrator, MCTS Windows 2008 & Exchange 2007 & Exchange 2010, Exchange 2010 Enterprise Administrator, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Complete List of Technical Blogs: http://www.delawarecountycomputerconsulting.com/technicalblogs.phpThis posting is provided AS-IS with no warranties or guarantees and confers no rights.
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14 марта 2012 г. 5:26Модератор
Hi xptking,
Thanks for posting here.
> i'd like to deploy dc1 as a 2nd dhcp server,and then both servers could update automatically from the other one.
>for redundancy purpose.With current Windows Server OS , we ‘d better to do the failover for DHCP service with the options that listed in the links below which is also what Ace suggested in pervious replies:
Design Options for DHCP Availability and Fault Tolerance
http://technet.microsoft.com/en-us/library/dd296672(WS.10).aspxHowever , in next server version , Windows Server “8” , we can implement redundancy for DHCP service with the method you described:
High Availability for DHCP Server Service Technical Preview
http://technet.microsoft.com/en-us/library/hh831493.aspxThanks.
Tiger Li
Tiger Li
TechNet Community Support
- Помечено в качестве ответа Tiger LiModerator 16 марта 2012 г. 7:13
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15 марта 2012 г. 6:54
thank you all.Hi xptking,
Thanks for posting here.
> i'd like to deploy dc1 as a 2nd dhcp server,and then both servers could update automatically from the other one.
>for redundancy purpose.With current Windows Server OS , we ‘d better to do the failover for DHCP service with the options that listed in the links below which is also what Ace suggested in pervious replies:
Design Options for DHCP Availability and Fault Tolerance
http://technet.microsoft.com/en-us/library/dd296672(WS.10).aspxHowever , in next server version , Windows Server “8” , we can implement redundancy for DHCP service with the method you described:
High Availability for DHCP Server Service Technical Preview
http://technet.microsoft.com/en-us/library/hh831493.aspxThanks.
Tiger Li
Tiger Li
TechNet Community Support
i am looking forward to windows 8 server,it should be much easier to design than multipal DCs in a ADxptking@hotmail.com
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