|
|
|
| |
| Adapters | Drivers | Tools | Additional Info |
| |
- Speeds up to 5 Mbps
- X.35, X.22, or RS-449 electrical interface
- RFC 1356 for X.25
- RFC 1490 for Frame Relay
- PPP
- ISA or PCI adapters
|
Synchronous Overview
Where DSL or cable access is unavailable, Wanware Linux solutions
using synchronous leased lines and PPP,
X.25 or Frame Relay support high-speed Internet connections.
Wanware Linux, combined with standard Linux applications such as Apache
and IP,
forms the basis of secure Internet access for many organizations.
In an Intranet environment,
Wanware Linux provides application connection between branch
offices and a central location over public packet-switched data networks
or private (leased line) facilities.
Wanware Linux for Synchronous Leased Lines Overview
Wanware Linux's synchronous connection options for TCP/IP
integrate high-performance serial connections with Intel-based
Linux computers.
It transfers IP datagrams over synchronous data links running PPP,
Frame Relay or X.25 at speeds up to 5 Megabits/second.
The product supports up to four adapters available with two
or four synchronous ports per adapter.
Hardware
Communications controllers for Wanware Linux are available for the 5 volt
and 3.3volt versions of the PCI bus.
Electrical interface options include RS-232-C, X.21, V.35 and RS-422.
SGP adapters are all bus mastering devices which uses the Zilog Z16C32
VLSI communications controller to transfer communications information
directly between memory and serial ports,
requiring no intervention on the part of the CPU.
Software
PPP Connectivity
Synchronous PPP offers considerable performance improvements over
asynchronous communications, both in terms of the top speed available
(5Mb/sec) and the CPU and protocol overheads avoided when compared
with a conventional (asynchronous) PPP link.
Compared with both X.25 and Frame Relay, synchronous PPP offers
considerable simplification for the installer;
it is essentially self-configuring, as the two PPP entities negotiate
their connection when communication begins.
X.25 Connectivity
RFC 1356 defines the techniques and algorithms to be used for carrying
IP traffic over X.25 data links.
Wanware Linux conforms to this specification, and exchanges information
with any other RFC-compliant router.
Wanware Linux controls the use of Switched Virtual Circuits to
communicate with remote systems, establishing them and disconnecting
them on an "on-demand" basis as traffic levels dictate.
Wanware Linux can operate as an X.25 DCE,
allowing customers to connect without an intervening public data network
to assure reliability in noisy communications environments.
Frame Relay Connectivity
RFC 1490 defines the techniques and algorithms to be used for carrying
IP traffic over Frame Relay data links.
Wanware Linux conforms to this specification,
and exchanges information with any other RFC-compliant router.
Wanware Linux can be used to connect devices with no local
management interface, or with an intervening Frame Relay data network
using any of the common local management interfaces (LMIs):
Frame Relay Consortium, ANSI Annex D, and CCITT Annex A. |
| Other Wanware Linux Protocols |
|
|
|
|
