DHCP Mirgation from 2008 to 2012

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hi,

i migrating dhcp server 2008 2012 environment. please let me know best practice of migration.

i have configured dhcp failover in windows 2008 r2 environment.

any grateful.

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thankx & regards,

dd6

hi,

this type of question running in technet portal.

http://social.technet.microsoft.com/forums/en-us/fed16caa-fb53-4037-a578-5f8dfc61e4e3/dhcp-failover-migrate-dhcp-server-to-another-machine?forum=winservergen

process of migration dhcp server 2008r2 windows 2012

• firstly, can disable dhcp role in windows server 2008 r2. however, if windows server 2012 down, clients cannot renew ip lease duration , obtain ip address.

therefore, recommended leave dhcp role in windows server 2008 r2 , deploy high availability. windows server 2012 brings new feature: dhcp failover. requires both dhcp servers windows server 2012. consider server windows server 2008 r2, have choose 1 of following:

>> dhcp in windows failover cluster. option places dhcp server in cluster additional server configured dhcp service assumes load if primary dhcp server fails. clustering deployment option uses single shared storage. makes storage single point of failure, , requires additional investment in redundancy storage. in addition, clustering involves relatively complex setup , maintenance.

>> split scope dhcp. split scope dhcp uses 2 independent dhcp servers share responsibility scope. typically 70% of addresses in scope assigned primary server , remaining 30% assigned backup server. if clients cannot reach primary server can ip configuration secondary server. split scope deployment not provide ip address continuity , unusable in scenarios scope running @ high utilization of address space, common internet protocol version 4 (ipv4).

more references:
step-by-step: configure dhcp failover (windows server 2012)

how configure split-scope using wizard

dhcp step-by-step guide: demonstrate dhcp split scope delay on secondary server in test lab

dhcp step-by-step guide: demonstrate dhcp failover – clustering in test lab

if need snap shot of migration follow these links.
http://blogs.technet.com/b/canitpro/archive/2013/04/29/step-by-step-migration-of-dhcp-from-windows-server-2003-to-windows-server-2012.aspx
http://www.mehrban.net/migrating-dhcp-from-windows-2008-to-windows-2012

deepak kotian. mcp, mcts, mcitp exchange 2010 ent. administrator disclaimer: please take moment "vote helpful" and/or "mark answer", applicable. helps community, keeps forums tidy, , recognizes useful contributions. thanks! opinions expressed here mine. posting provided "as is" no warranties or guarantees , confers no rights.



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