Maximum number of updates in a single transaction
Mark_Andrews at isc.org
Fri Feb 10 23:14:11 UTC 2006
> We are implementing a new service that requires a substantial number
> of dynamic updates to be performed on a zone. We are talking of 2K
> updates in a single dynamic update transaction.
> We made some tests with Bind 9.3.2 by sending 60 domain updates in a
> single transaction (TCP) and everything works correctly.
> RFC2136 specify a 16 bit limit to UPCOUNT section in the header, so I
> assume that the limit of updates that I can send on a single
> transaction is 2^16.
> What is your recommendation of the maximum number of updates in a
> single transaction?
> I believe that ISC makes validation tests with each BIND release. How
> many dynamic updates are sent in the ISC's validation tests?
> Thank you.
> Gustavo Lozano
> NIC Mexico (ccTLD .mx)
The limitation is the size of the DNS message. A individual
message can be up to 65535 bytes.
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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