Solstice X.25 9.2 Administration Guide

Setting the Max. NSDU

If you have an IP/X.25 link between a current-release Solstice X.25 machine and a machine running SunNet X.25 7.0, set Max NSDU to at least 1024. Otherwise IP connections can hang when a high volume of data is sent from the 7.0 machine. If you have two current-release machines on each side of the link, set Max NSDU to be the same on both sides. It can be as high as 8192.