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Redundant DNS Entries?this thread has 6 replies and has been viewed 2752 times
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#1
21st June 2010, 04:22
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Redundant DNS Entries?
I've tried to ping our domain name (let's say abc.com.au) from the 192.168.10.12 server, and it is trying to reach an old server IP Address that was retired from the network, 192.168.10.13.
When I look in DNS FLZ under abc.com.au it lists: (same as parent folder) Host (A) 169.254.6.21 (same as parent folder) Host (A) 169.254.206.10 (same as parent folder) Host (A) 192.168.10.12 (same as parent folder) Host (A) 192.168.10.13 (same as parent folder) Host (A) 192.168.10.15 The current DCs are 192.168.10.12 & 192.168.10.15. 1. Can I delete the 169.254.6.21, 169.254.206.10 IP addresses? I'm assuming DNS doesn't have these MS IPs for a particular purpose, but was probably left over from the initial build of the DNS Server before IPs were assigned? Would that assumption be right? If I ping them I get "Request timed out". (The 1st IP addresses occurs elsewhere as well, I've included details below) 2. Can I delete the 192.168.10.13 IP address? will this then cause any pings to the abc.com.au domain to look up the address from DNS again and ping one of the correct DCs? Thanks for your help. __________ I can also find one of these entries in other locations: FLZ - abc.com.au - _msdcs - gc: - 169.254.6.21 (as well as the 2 actual DCs) FLZ - abc.com.au - DomainDNSZones: - 169.254.6.21 (as well as the 2 actual DCs) FLZ - abc.com.au - ForestDNSZones: - 169.254.6.21 (as well as the 2 actual DCs) |
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#2
21st June 2010, 04:47
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Re: Redundant DNS Entries?
Enable scavenging; let the DNS service handle deletion of old records before deleting anything manually.
__________________
Gareth Howells BSc (Hons), MBCS, MCP, MCDST, ICCE Any advice is given in good faith and without warranty. Please give reputation points if somebody has helped you. "For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the Earth." (Exodus 9:15) - I could kill you with my thumb. "Everything that lives and moves will be food for you." (Genesis 9:3) - For every animal you don't eat, I'm going to eat three. |
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#3
21st June 2010, 08:41
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Re: Redundant DNS Entries?
Thanks for your reply
 , I've been debating as to how safe Scavenging is as I've not run it before.Does it just remove old entries? How does it deal with manually added DNS entries? Even if they're not used or old. |
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#4
21st June 2010, 10:05
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Re: Redundant DNS Entries?
Static or manual created records are not deleted.
__________________
Marcel Netherlands http://www.phetios.com http://blog.nessus.nl MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE No matter how secure, there is always the human factor. |
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Re: Redundant DNS Entries?
Hybrid Mode
