Jul 012008
 


Windows DHCP can register host records (A) and Reverse lookup or Pointer (PTR) resource records automatically whenever you add a new device to the network. This enables simplified and easy network administration. However, these records are not automatically purged when they are stale or outdated (say when the host gets a new IP address) and they remain in the DNS zone database indefinitely. This can cause network issues and can prevent host names from re-used.

However, this can be overcome by configuging the DNS Server to track the age of each dynamically-assigned record and to periodically remove records (also called scavenging) that are older than the number of days that you specify.

The age of a resource record is based on when it was created or when it was last updated. By default, Windows client systems by default send a request every 24 hours to the DNS server to update their records. This prevents the records the records from being removed from the database.

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Apr 032008
 


Windows 2000 & Windows 2003 DNS Server Dynamic DNS update functionality enables DNS client computers to register and to dynamically update their resource records with a DNS server whenever changes occur. This reduces the requirement for manual administration of zone records, especially for clients that frequently move and use Dynamic Host Configuration Protocol (DHCP) to obtain an IP address.

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Feb 202008
 

Windows XP and later provides you with a one step resolution to network problems on your PCs and Servers in the form of a Repair button under the properties of the network connection. This is a simple and effective way to resolve a network problem but do you know what exactly happens when you run this command?

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Jan 222008
 

DNSCmd.exe is a Command Line Interface utility to display and modify Windows DNS  (Domain Name System)servers. DNSCmd.exe is an equivalent to the DNS Server snap-in from the MMC (Microsoft Management Console).

Dnscmd is enhanced version of the dnsstat.exe utility in Windows NT which infact was replaced by Dnscmd.exe utility itself later on.

Dnscmd.exe can be used to display and edit the properties of DNS servers, DNS Zones and Resource Records. Dnscmd.exe can also be used to force replaication between DNS Server memory and DNS database and data files. Dnscmd.exe is also useful for the fact that it can run on the local server systems and on remote servers running DNS Server software.

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