Cabletron Systems HSIM-W6 - Manual (Page 22)

Chapter 2: About the HSIM-W6
8 HSIM-W6 User’s 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 PPP 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
• Inverse Multiplexing (IMUX)