Second edition. Also published as a book by O'Reilly. Includes information about configuring TCP/IP, IP accounting, masquerading/NAT, NFS, IPX, and NCP.
Explores effective uses of threads by looking at a multi-threaded implementation of the QuickSort algorithm and reports on situations where using threads will not help.
This book gathers hundreds of example router configurations all in one place. In chapter 14, the authors provide information on configuring, running, and debugging NTP on your Cisco router. This link via O'Reilly's Safari network for online publications.