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Hi Experts,<br />
<br />
IT is curios!<br />
<br />
I tried to copy large iso files from local harddisk to vmware vcenter computer. bandwith is very small 1 MB/s ?<br />
We have 2 active directory integrated DNS Server and a secondary DNS Zone on memberserver. dhcp arrange dns-, wins options ect. well without errors.<br />
So i change my IP-Connection from Wlan to Ethernet Controller an get a new IP Adress. I command &lt;&lt;ipconfig /flushdns &amp;&amp;&nbsp;ipconfig /registerdns&gt;&gt; on vmware vcenter computer but can't ping my new IP Adress in fact it caches my old IP Adress. i inspect the two ad dns server and find out that dns replikation seem not be finshed. I load master dns zone manually on dns server which dns forward zone miss my A Record. On vmware vcenter computer i restart dns-Client net stop &amp;&amp;&nbsp;net start dnscache. Copying files now works fine with 20MB/s.<br />
I wondering why i. AD DNS does't refresh my A Record and ii. which slow name resolution appears if DNS does't work properly? NetBIOS. Is Netbios slower than DNS in SMB issue?<br />
<br />
Thx &amp;&amp;&nbsp;Best Regards.
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Hi Experts,

IT is curios!

I tried to copy large iso files from local harddisk to vmware vcenter computer. bandwith is very small 1 MB/s ?
We have 2 active directory integrated DNS Server and a secondary DNS Zone on memberserver. dhcp arrange dns-, wins options ect. well without errors.
So i change my IP-Connection from Wlan to Ethernet Controller an get a new IP Adress. I command <<ipconfig /flushdns && ipconfig /registerdns>> on vmware vcenter computer but can't ping my new IP Adress in fact it caches my old IP Adress. i inspect the two ad dns server and find out that dns replikation seem not be finshed. I load master dns zone manually on dns server which dns forward zone miss my A Record. On vmware vcenter computer i restart dns-Client net stop && net start dnscache. Copying files now works fine with 20MB/s.
I wondering why i. AD DNS does't refresh my A Record and ii. which slow name resolution appears if DNS does't work properly? NetBIOS. Is Netbios slower than DNS in SMB issue?

Thx && Best Regards.

DNS How-to-speed-up-your-NIC

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.

Internet Protocols

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.