Re: Speeding up DNS change propagation

2015-09-18 Thread Danny Sinang
p level DNS server ? > > > > Regards, > > Danny > > > > On Fri, Sep 18, 2015 at 2:51 PM, John Miller > wrote: > >> > >> On Fri, Sep 18, 2015 at 2:35 PM, Danny Sinang > wrote: > >> > Hi, > >> > > >> > Our vendor is

Re: Speeding up DNS change propagation

2015-09-18 Thread Danny Sinang
As a follow-up to your answer for question #2, after my clearing the cache or restarting BIND, won't BIND find an old cache of "ftp.example.com" in the ".com" top level DNS server ? Regards, Danny On Fri, Sep 18, 2015 at 2:51 PM, John Miller wrote: > On Fri, Se

Speeding up DNS change propagation

2015-09-18 Thread Danny Sinang
Hi, Our vendor is changing their FTP server's IP address tomorrow. 1. How can I tell how long their DNS change will propagate to us ? a. Do I just run dig a "ftp.example.com" and look for the TTL for that DNS entry ? b. Every time I run that command, the TTL is shrinking. How do I find