DNS no longer accepting multi homed DHCP registrations?

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i curious if there change in how windows 2008 r2 dns or dhcp systems handled dns registration of workstations have multiple active interfaces?  i've noticed change in behavior causing issues, , trying narrow down needs attention, dns or dhcp.

for example, laptop 2 active interfaces - 1 wifi, 1 wired.  previously, 2003 dhcp server provide 2 addresses, , turn around , register 2003 dns 2 separate ip addresses particular hostname.  thus, workstation1.domain.com listed twice in dns, 2 separate records , ip address entries...to create round-robin configuration.  if round robin wasn't working quite right, ip addresses in there querying when needed.

with 2008 r2 dhcp , dns server in place, dhcp servers still provides 2 addresses properly, , in dhcp logs, shows registration success dns, however, it's treating 'dns update'.  thus, last ip provided workstation, ip registered particular hostname.   in dns , see multiple entries laptop devices, see one..never two.

now, can argue either config isn't quite ideal...which agree with...and i'm addressing separately...however, i'd find resolution how may once again multiple entries in dns, current configuration, can end in situation dns last registers lan port, workstation jumps on wireless, calls in help, , dns has no record of wifi address is....if head on dhcp console, can dig out active address, , reach machine that's still on lan.

any background info appreciated. thank you!

pete



hi,

thank post.

1. in windows 2003 dhcp server, may not configure dnsupdateproxy/credentials on wired , wireless dhcp server. dhcp servers have no permission update dns record registered server , result in duplicated dn records.

2. it's normal keep 1 host dns record latest update. if want duplicate records, don't configure dnsupdateproxy/credentials in dhcp servers.

http://technet.microsoft.com/en-us/library/dd334715(ws.10).aspx
http://msmvps.com/blogs/acefekay/archive/2009/08/20/dhcp-dynamic-dns-updates-scavenging-static-entries-amp-timestamps-and-the-dnsproxyupdate-group.aspx 

if there more inquiries on issue, please feel free let know.

regards

rick tan

technet community support




Windows Server  >  Network Infrastructure Servers



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