dns and multiple TTLs, why do that?
Hello,
My question is about DNS use of the $TTL directive. I realize the $TTL directive stands for TimeToLive, my question is why would you specify different TTLs in the zone file? I have a zone file with
$TTL 300
machine
machine
machine
TTL 3600
machine
machine
machine
TTL 300
machine
machine
machine
I'm not sure why you just wouldn't specify the same TTL for all systems or at least not have all the 300's grouped together and all 3600s grouped together. The file I'm looking at has about 12 different groups of 300 and 3600 TTLs.
|