Technical data

3.3.1
Multihomed Computers ................................................. 3–5
3.3.2
Primary Interface ........................................................ 3–5
3.3.3
Pseudointerfaces ......................................................... 3–6
3.4
Serial Line Connections ...................................................... 3–6
4 OpenVMS Operating System TCP/IP Features
4.1
TCP/IP Management Control Program .................................... 4–1
4.2
Defining Logical Names ..................................................... 4–2
4.3
OpenVMS System Dump Analysis (SDA) Tool ........................... 4–2
4.4
System Messages ............................................................. 4–3
4.4.1
OPCOM .................................................................... 4–3
4.4.2
Log Files ................................................................... 4–3
4.5
ODS-5 and ODS-2 File Structures ......................................... 4–4
4.5.1
Considerations for System Management ............................. 4–4
4.5.2
Consideratio
ns for Users ................................................
4–4
4.5.3
Considerations for Applications ........................................ 4–4
4.6
Network Printers ............................................................. 4–5
4.6.1
Line Printer Daemon (LPD) Service .................................. 4–5
4.6.2
TELNET Print Symbiont ............................................... 4–7
4.6.3
Serial Line Printer Connections ....................................... 4–7
4.6.4
Sharing Network Printers Using PATHWORKS (Advanced
Server) ..................................................................... 4–7
4.6.5
PC-NFS .................................................................... 4–9
5 Network Server Services
5.1
Network Ti
me Protocol (NTP) ..............................................
5–1
5.1.1
Time Distributed Through a Hierarchy of Servers ................. 5–2
5.1.2
How the OpenVMS System Maintains the System Clock ......... 5–2
5.1.3
How NTP Adjusts System Time ....................................... 5–2
5.1.4
Configuring the Local Host ............................................. 5–3
5.1.5
Using the Distributed Time Synchronization Service (DTSS) .... 5–3
5.2
Routing ......................................................................... 5–3
5.2.1
Static Routing ............................................................ 5–4
5.2.2
Dynamic Routing ......................................................... 5–4
5.3
Remote Client Management (BOOTP/DHCP) ............................ 5–6
5.3.1
How DHCP Operates .................................................... 5–6
5.3.2
How DHCP Allocates IP Addresses ................................... 5–7
5.3.3
Relati
onship Between DHCP and BOOTP ...........................
5–9
5.3.4
Client ID ................................................................... 5–9
5.4
File Transfer Services ........................................................ 5–9
5.4.1
FTP (File Transfer Protocol) ............................................ 5–10
5.4.2
Trivial FTP (TFTP) ...................................................... 5–10
5.4.3
R Commands .............................................................. 5–10
5.4.4
Differences Between FTP and RCP ................................... 5–11
5.5
Simple Network Management Protocol (SNMP) ......................... 5–12
5.5.1
Configuring SNMP ....................................................... 5–12
5.5.2
Ensuring Access to Mounted Data .................................... 5–13
6 Mail Services
6.1
Post Office Protocol (POP) ................................................... 6–1
6.1.1
POP Server Process ...................................................... 6–1
iv Contents