When you update the nameservers for a domain, it may take up to 24-72 hours for the change to take effect. In other words, it is a period of time ISP (Internet service provider) nodes across the world take to update their caches with the new DNS information of your domain. Let’s imagine you live in Bari, Italy, and you just have changed the nameservers for your domain that is hosted in Phoenix, USA.That is why the new nameservers will not propagate immediately – ISPs have different cache refreshing intervals, so some of them will still have the old DNS information in the memory.Using Netflow, I could see the ip address of the offender but couldnt see the hostname of the computer/workstation that was the offender.Here is my config for DHCP on the switch -ip dhcp pool PC network 10.1.70.0 255.255.255.0 domain-name dns-server 10.1.1.1 10.1.1.2 default-router 10.1.70.1 lease 8This is an office across the street from the main building.Dont have a router there, only a 3750 tied in via a fiber link.I have been looking at the Cisco docs for getting this to work but nothing yet.If you don't want your new site to start displaying for everyone, don't change the DNS settings.If you want to make sure your new site looks good, check out Preview your website.
Combined with Active Directory (AD) it makes managing thousands of DNS records for clients and servers a breeze.
Once you're ready to display your new site, you can update your DNS settings at your domain name's registrar (i.e.
On the secondary server, check the log file or Windows Event log for any warning messages with a text starting with ”Failed to Zone Transfer...”.
I have tried flushdns, and tried enabling the scavenging records after 1 day but it doesn't seem to help.
Either restart the DNS services doesn't really do anything.
Only way for me to get the IPs is to run a network IP scan to see what the machine IPs are actually and then either do a update on the DNS manually to set the IP or just use the IP i got from the network scan to remote into these machines when needed.