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TXFRTypes

Represents the Zone transfer mechanisms allowed when propogating DNS resource record updates.

TXFRTypes is an enumerated type that represents the mechanisms allowed when performing Zone transfers used to propogate DNS resource record updates. 

TXFRTypes includes the following values and associated meanings: 

 

Value 
Meaning 
xtAXFR 
Send the entire contents of the zone 
xtIXFR 
Transmits only the changed portions of a zone 

 

The original zone transfer mechanism (AXFR) was not an efficient means to propagate changes to a small part of a zone, as it transfers the entire zone file. 

Incremental transfer (IXFR) was proposed as a more efficient mechanism, as it transfers only the changed portion(s) of a zone. 

TXFRTypes is the type used to represent the TIdDNSResolver.XFRType property.

Copyright 1993-2006, Chad Z. Hower (aka Kudzu) and the Indy Pit Crew. All rights reserved.
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