Peter Peter wrote on 28/10/2004 09:45:49:
Jay Daley <td@nominet.org.uk>:
As it happens we use probing not NOTIFY since it gives a greater level of control over the number of secondaries being updated at once (and the
NOTIFY already specifies precautions against a 'rush', although implementations may differ and depending on the size of the zone 'at once' may have different meanings.
Just to give you an idea, the total size of the zone files is around 250MB and as we do a full transfer every day these take about 2 hours per secondary. This will change soon as we move to incremental updates, at which point we may well use NOTIFY. From looking at our logs the largest number of zone files changes on one day is generally about 250,000 DNs being added or removed. Jay Daley Nominet UK