How does load balancing operate on >1 forwarders

[Mark Andrews]

In message <t2q9876b68c1004190706v21144cb2i9193d716948048c2 at mail.gmail.com>, Jo
nathan Reed writes:
> 
> bind 9.6.1-P2.
> 
> I've dumped it to its file.
> $ sudo rndc dumpdb
> $ cat named_dump.db
> ...
> ; Unassociated entries
> ;
> ;       10.0.0.3 [srtt 610620] [flags 00002000] [ttl 1721]
> ;       10.0.0.2 [srtt 16654] [flags 00002000] [ttl 1721]
> ;       10.0.0.1 [srtt 375289] [flags 00002000] [ttl 1721]
> ...
> 
> So I can assume that srtt with the lowest value has the best metric? And the
> ttl of 1721 is the timeout of 1.7 seconds? Am I reading that right?

ttl is the time to live of the adb entry (secs).
srtt (smoothed round trip time) is use to select the server (usecs).

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org