NETWORK CONNECTIVITYNetwork interfaceAn IBM or IBM-compatible mainframe may be connected to anLPS through a LAN as shown in figure 4-3.Ethernet LAN This configuration requires a front end processor, such as EntireFIBRE 400/600, that converts the Ethernet TCP/IP protocol to anEthernet XNS protocol.Other LAN If you are using a network interface other than Ethernet, such astoken ring, you need a third-party gateway to convert yournetwork protocol to Ethernet TCP/IP protocol. You then need afront end processor to convert the TCP/IP protocol into XNS onEthernet.Figure 4-3. IBM and IBM-compatible Ethernet interfaceaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaEthernet LANLaser Printing SystemFront endprocessorOther EthernetcitizensIBM or IBM-compatible mainframeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaDatastreams In this configuration, application output is generally in PostScript.PostScript must be converted to a datastream format the printerunderstands. The front end processor converts PostScriptdatastreams to .IMG files. The front end is also needed toconvert TCP/IP to XNS.DEC VAX and MicroVAX mainframesAn LPS connected to either a DEC VAX or MicroVAX system inthe VMS environment can be configured for either acommunications or network interface. The communicationsinterface may be either local or remote. See figure 4-4 for a DECSPMF-VMS online interface.4-4 XEROX 4050/4090/4450/4650 LPS PRODUCT REFERENCE