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Facilità d'uso
HP TCP/IP Services for OpenVMS Version 5.6
SPD 46.46.21
The main benefit of NFS Version 3 is increased max-
management station on the network.
SNMP sup-
imum file size—up to 1 terabyte for an OpenVMS file
ports IPv4 only.
system and up to 4 gigabytes for a container file sys-
tem. Performance gains may result from the improve-
•
Network Time Protocol (NTP) Version 4 provides a
ments to file-size processing and the enhanced write
means to synchronize time and coordinate time dis-
performance that allows the NFS server to acknowledge
tribution throughout a TCP/IP network. NTP provides
a write operation before the files are actually written to
accurate and dependable timekeeping for OpenVMS
disk. Afterward, the server’s response to a commit mes-
hosts on TCP/IP networks.
sage confirms that the data has been written to disk.
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Berkeley Internet Name Domain (BIND) is a dis-
tributed database system that distributes and man-
The NFS server supports communication over both TCP
ages host information so that hosts do not need to
and UDP. NFS over TCP offers better support for file
locally manage the address of every other host on the
access over wide area links than UDP. The NFS client
internet. The BIND 9 server is based on the Internet
is limited to UDP only.
Software Consortium’s (ISC) BIND 9.2.1 implemen-
The NFS server and client support OpenVMS Extended
tation. It includes dynamic updates and BIND server
File Specifications, including long file names, deep di-
cluster failover, which allows multiple BIND master
rectories, and extended character sets on ODS-5 file
servers to share a common database, thus provid-
structures.
ing both redundancy and a failover mechanism when
one of the servers becomes unavailable.
Mail Services
The BIND server is based on the ICS’s BIND 9.2.1 im-
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Secure IMAP (SSL support)
plementation, and supports IPv4 and IPv6.
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Secure POP (SSL support)
The BIND resolver is based on the BIND 8.1.2 imple-
mentation. The BIND resolver supports communication
With the Simple Mail Transfer Protocol (SMTP),
over IPv4 only, but it is capable of querying for IPv6
OpenVMS users can send and receive electronic
addresses (AAAA records).
mail to and from local and remote hosts.
The
TCP/IP Services for OpenVMS implementation of SMTP
The BIND server and the BIND resolver are available
uses the OpenVMS Mail facility, which automatically
on OpenVMS I64 and OpenVMS Alpha systems.
recognizes an SMTP host address in the format
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Load broker supplies cluster load balancing, round-
smith@widgets.com. SMTP provides support for SFF
robin scheduling, and automatic failover.
(Send From File) and outbound alias specification.
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Metric server calculates and reports the DNS load on
The following mail systems work with SMTP, providing
the local host. It includes dynamic configuration of
reliable, server-based mail repositories for clients:
logical names, which can be defined for CPU rating,
compute interval, and debug level, as well as support
•
Post Office Protocol (POP) server
for multihomed systems to allow load balancing of
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IMAP Mail server (Alpha systems only)
incoming traffic across multiple IP addresses.
Note: Secure IMAP and Secure POP require the use
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Portmapper allocates ports so that system managers
of the HP SSL for OpenVMS software.
do not need to preconfigure client applications with
port numbers for each service.
Network Services
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Auxiliary server process is the TCP/IP Services for
New Features:
OpenVMS implementation of the UNIX internet dae-
mon (inetd). The auxiliary server greatly simplifies
•
BIND 9 Resolver
application writing, manages overhead by reducing
simultaneous server processes, provides system se-
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DNS/BIND V9.3 Server
curity through authentication of service requests, and
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NTP Security Update (SSL)
supports event and error logging.
With the following TCP/IP Services for OpenVMS man-
•
Dynamic Host Configuration Protocol (DHCP) is a su-
agement components, network and system managers
perset of the Bootstrap Protocol (BOOTP). In addi-
can provide consistent, reliable, and efficient services
tion to BOOTP functionality (answering bootstrap re-
to their users with minimal interruption:
quests), DHCP offers robust configuration services,
including IP address, subnet masks, and default
•
Simple Network Management Protocol (SNMP) Ver-
gateways. The DHCP server can be configured to
sion 2 includes a master agent and subagents that
support BOOTP clients. If BOOTP is enabled with-
allow the OpenVMS system to be managed by a
out DHCP, DHCP functionality is not available.
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