Question about 8.2.1 round robin of CNAMEs

[Barry Margolin]

In article <13B1F1075312D211B4E30008C7FAA642031FF1 at emerald.telecom.sna.samsung.com>,
Lance Pattist  <lpattist at sta.samsung.com> wrote:
>
>> Hi,
>> 
>> I've been experimenting with distributing server loading using named
>> "round robin" as mentioned in the "comp.protocols.tcp-ip.domains FAQ". I
>> can't get it to work like the example indicates.
>> 
>> This is a two level round robin. First CNAMEs for "hydra" are done round
>> robin, then the addresses for each A record associated with the CNAME.
>> When I query "hydra" what I see with bind 8.2.1 is that only the first
>> CNAME is ever selected. The addesses for that first CNAME, "hydra1", are
>> selected round robin. The example in the FAQ says the CNAMEs should also
>> be selected round robin.

Are you querying an authoritative server or a caching server?  Since the
authoritative server only returns one CNAME at a time (but in round-robin
fashion), a caching server will just contain the one record that it
received, and keep using that until it times out.  When it queries for the
A records it will get them all, and then hand them out in round-robin order
to its clients.

P.S. Why was your message prefixed with ">" as if it were the text of a
message you were replying to?

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.