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Chapter 1 Introduction of Function
1.1 Support a variety of protocols
1.1.1
Suitable for a variety of network environments
The DI-2000 series of routers is suitable for a variety of network environments.
The DI-2000 series complies with the requirement about routers in IETF RFC1812 and
supports most network protocols: X.25, FR, synchronous/asynchronous PPP, SLIP,
HDLC, Ethernet, IP, ICMP, TCP, UDP, OSPF, RIP(version 1&2) ,SNMP(version 1&2),
TELNET,
interconnection of X.25 network, Frame Relay, DDN, telephone network and LAN, and
is operational with software and hardware network equipment provided by other
makers. The series include three types:
The DI-2004 has two synchronous ports.
The DI-2006 is the ISDN router.
1.1.2
Support the Ehernet Protocol and ARP protocol
Provides interfaces of TP(twisted pair) RJ45 interface and thicknet AUI interface, and
support the Ehernet Protocol and ARP protocol.
1.1.3
Variety of WAN protocols
Supports a variety of WAN protocols, including X.25, Frame Relay, HDLC, PPP and
SLIP.
1. X.25
The x.25 protocol defines remote access and computer communication between data
terminal equipment (DTE) and data circuit-terminating equipment (DCE). Among that, it
mostly defines the lowest three layers of the OSI reference model: physical, data-link,
network. The DI-2000 series complies with ITU-T 1988 X.25 and provides the following
functions:
LAPB provides reliable transfer of data between DCE and DTE.
X.25 supports switched virtual circuits (SVCs) and permanent virtual circuits
(PVCs). It establishes the simultaneous connection with more than one terminal
device with X.121 address and PVC number.
Supports interconnection with the public packet-switching network, and direct
connection with router devices and network cards.
ARP,
Inverse
ARP,Z-MODEM.
DI-2000 Series Routers hardware installation manual
The
DI-2000
series
supports
the
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