About the CSX4008 CSX400 and CSX400-DC User’s GuideOptional FeaturesRack Mounting Capabilities — The CSX400 can be installed in a 19-inch rack with theincluded mounting brackets and screws. Refer to Chapter 6 Installation, for complete rackmounting instructions.Hardware Data Compression Module (CSX-COMP/ENCR) — The same industry standardSTAC Electronics Stacker LZS Compression algorithm supported by CSX400 software is madeavailable by an optional hardware data compression module that accelerates data compression forthe CSX400 over PPP and Frame Relay. Depending on the packet type and size, hardware datacompression provides a minimum of 2:1 data compression, giving 3 Mbps throughput on each T-1WPIM interface. To use the hardware data compression module, compatible equipment (such asthe CSX400, CSX200, and HSIM-W6 or other vendors’ equipment which conforms to theapplicable standards), must be in use at both ends of the WAN link. When the hardware datacompression module is installed on the board, it automatically assumes the compression task fromsoftware. There is no configuration necessary to prioritize hardware over software compression.CSX400 Firmware SupportThe CSX400 firmware supports IEEE 802.1d bridging, and IP and IPX routing, and OSI Layer 2Inverse Multiplexing (IMUX), which allows both WAN channels to be used as a single, highbandwidth, 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, DigitalData Service, ISDN BRI, or HDSL connections.This device supports industry-standard protocols, security features, compression algorithms andnetwork management tools to ensure interoperability with equipment from other vendors.IEEE 802.3 EthernetThe CSX400 provides a standard 802.3 Media Access Control (MAC) layer for Ethernetcommunications. All bridging and routing protocols are supported across the Ethernet link.
