Cabletron Systems WPIM-DDS Guía de instalación descargar pdf (Pagina 18)

Chapter 2: About the HSIM-W6

2-4 HSIM-W6 Installation Guide

Optional Feature

Hardware Data Compression Module (CSX-COMP/ENCR) — The same industry standard

STAC Electronics Stacker LZS Compression algorithm supported by HSIM-W6 software is made

available by an optional hardware data compression module that accelerates data compression for

the HSIM-W6 over Nailed-up PPP or ISDN and Frame Relay. Depending on the packet type and

size, hardware data compression provides a minimum of 2:1 data compression, giving 3 Mbps

throughput on each T-1 WPIM interface. To use the hardware data compression module,

compatible equipment (such as the HSIM-W6, CSX200, and CSX400 or other vendors’

equipment which conforms to the applicable standards) must be in use at both ends of the WAN

link. When the hardware data compression module is installed on the board, it automatically

assumes the compression task from software. There is no conﬁguration necessary to prioritize

hardware over software compression.

HSIM-W6 Firmware Support

The HSIM-W6 ﬁrmware supports IEEE 802.1d bridging, and IP and IPX routing, and OSI Layer 2

Inverse Multiplexing (IMUX), which allows both WAN channels to be used as a single, high

bandwidth, WAN channel. Wide Area Networking includes Point-to-Point Protocol (PPP), Frame

Relay, and ISDN. Remote access is via Full or Fractional T1, E1, Synchronous, Digital Data

Service, ISDN BRI, or HDSL connections.

This device supports industry-standard protocols, security features, compression algorithms and

network management tools to ensure interoperability with equipment from other vendors.

WAN Protocols

This device supports the following WAN protocols over the WAN port:

• Point-to-Point Compression Control Protocol (CCP) as deﬁned by RFC 1962

• Point-to-Point Protocol (LCP) as deﬁned by RFC 1661

• Point-to-Point Protocol (BNCP) as deﬁned by RFC 1638

• Point-to-Point Protocol (IPCP) as deﬁned by RFC 1473

• Point-to-Point Protocol (IPXCP) as deﬁned by RFC 1552

• Frame Relay as deﬁned by RFC 1490

• Frame Relay Data Compression Protocol (DCP) as deﬁned by FRF.9

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Cabletron Systems WPIM-DDS Guía de instalación Pagina 18