RFC-29

19 January 1970

This note is in response to Bill English's Request for Comments: 28.

A "millisecond" clock should be satisfactory for most network measurements.

Round-trip message transit times typically should be at least on the

order of tens to hundreds of milliseconds. The IMP contains a 16-bit

hardware clock which is incremented every 100 microseconds to allow for

timing of internal events within the IMP, as for example, during tracing.

However, most measurements are made using a 25.6 ms. software clock.

DISTRIBUTION:

A Bhushan, MIT

S Carr. Utah

G Cole, SDS

S Crocker, UCLA

K Fry, MITRE

J Heafner, RAND

B Kahn, BBN

T O'Sullivan, Raytheon

L Roberts, ARPA

P Rovner, LL

R Stoughton, UCSB