May 9 – 10, 2015
Okura Hotel
Europe/Amsterdam timezone

Effects of Increasing the Root Zone ZSK Size

May 10, 2015, 9:30 AM
Heian I/II (Okura Hotel)

Heian I/II

Okura Hotel

Ferdinand Bolstraat 333 1072 LH Amsterdam
Public Workshop


Duane Wessels (Verisign)


The effects of increasing the root zone KSK size are studied by replaying trace data from to different name server processes with different ZSK (and KSK) parameters. This work explores how differing key sizes might affect root server operations in terms of (a) percent of UDP responses with TC bit set; (b) the distribution of response sizes over both UDP and TCP; (c) the amount of fragmented UDP responses; and (d) traffic volume (bandwidth). We consider both normal operations and key rollover scenarios.

Primary author

Duane Wessels (Verisign)

Presentation materials