Internet Protocol, Telnet | Cabletron Systems DMS-100 specification

52Chapter 2: EIU messaging protocols

Internet Protocol

The IP control software supports the IP logic, which provides a connectionless datagram service between hosts. The IP software is designed such that the same modules provide IP host and IP router functionality. The IP layer interfaces with the following:

•transport layer protocols like TCP and user datagram protocol (UDP) for providing data ﬂow between transport layer and data link layer

•address resolution protocol (ARP) for resolving IP address to subnet address

•Internet control message protocol (ICMP) for handling IP control messages to and from other IP nodes

The IP routing table is maintained through static dataﬁll in IP tables in DMS- core and through dynamic routing information available either through Routing Information Protocol (RIP) or ICMP redirect message.

The IP throttling process is responsible for transmitting queued IP datagrams to destination nodes, based on the IP throttling conﬁguration in the IP tables in DMS-core.

Telnet

Telnet is an application protocol for remote terminal access. Telnet software is implemented in two parts:

•a server that resides on the accessed (host) computer

•a client that resides on the accessing (remote) computer

The server program listens at a known port for connection from clients. After a connection is established, the client redirects all keyboard input to the server, which passes it on to the accessed program. The server intercepts all program output, and redirects it to the client which prints it on the client machine screen.

The DMS-100 telnet server implementation has the following features:

•remote access to the DMS-100 switch through telnet

•increased maximum number of simultaneous telnet sessions supported on the DMS-100 switch

•logs that report on the telnet software

•dynamic assignment of telnet sessions

Telnet functionality has been implemented in the DMS-100 switch to provide access to the CI and the MAPCI, which are running on a DMS-core (CM), from a workstation or other FTP-capable devices on an Ethernet LAN.

297-8991-910 Standard 03.01 August 1999

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Cabletron Systems DMS-100 manual Internet Protocol, Telnet

Contents

Ethernet Interface Unit Page Ethernet Interface Unit Standard 03.01 August Publication history AugustMay March Vi Publication history Standard 03.01 August Contents EIU messaging protocols Chapter EIU datafill EIU maintenance 103 Appendix C Using FTP 117Appendix D Using telnet 141 Volume listing Appendix I Obtaining a MAC address 185 Appendix H ASU background information 177List of terms 189 List of figures Xii List of tables Xiii Xiv When to use this document How to check the version and issue of this documentAbout this document References in this document Internet request for comment documents Xvi Possible loss of service What precautionary messages meanXvii How commands, parameters, and responses are represented Risk of personal injuryRisk of electrocution Input prompt Variables Commands and ﬁxed parametersResponses Standard 03.01 August Introduction to the EIU Possible loss of network security Overview of the EIU System architecture DMS-bus interface and expansion SLMIOC SOS Unix EIU Inter-message switch links required with LPP Data communications interface architecture Ethernet interface data ﬂow LAN Introduction to the EIU AUI PB Hardware descriptionUTP PB Slot EIU Rear paddle boardsFront cards DMS SuperNode switch LPP with an EIU SSLPP, with 2-slot EIU locations Top view of Sslpp shelf Ethernet interface card NT9X84 DMS SuperNode Flis with an EIU Ethernet physical interfaces Attachment unit interface-NT9X85AALPP NTEX22 CPU/IPF MAU Unshielded twisted-pair NT9X85BA Capabilities, limitations, and restrictionsGrounding requirements EIU hardware capabilities and limitations Introduction to the EIU Limitations associated with maintenance System-wide limitations Limitations associated with protocols Routing information protocol Feature packaging DMS-Core feature packages Package Title DescriptionInternet Protocol and Internet Control Message Protocol NTXF05AA DMS-bus inter-MS provisioning EIU provisioning requirementsSheet 2 Example of DMS-bus intermessage switch conﬁguration DMS-bus external MS provisioning EIU sparing and redundancy EIU provisioningNT9X17AA NT9X23BA User interface characteristics Service ordersBilling Logs, alarms, and OMs AlarmsPossible loss of information Log reports Introduction to the EIU Standard 03.01 August EIU messaging protocols Shows the structure of the DMS-100 switch EIU protocol stack Software architecture TCP UDP Icmp ARP FTP Telnet Snmp Bootp RIPFTS Ethernet TCP/UDP FTS DMS-busEthernet LAN Workstation TCP Boot protocol Supported protocols File transfer protocol Wsls Internet Protocol Telnet Address resolution protocol Transmission control protocolUser datagram protocol Internet control message protocol MAC addresses AddressingInternet addresses EIU messaging protocols How to get IP addresses for SuperNode What is the SuperNode network topology? Routing EIU messaging protocols APUX10 LIU7 APX LMSAPUX20 LIU7 Routing tables Protocol engineering IP ScreeningIP throttling TCP connection management UDP connection limits by SuperNode subsystem EIU APUSubsystem Maximum UDP connections FTP session control Protocol buffer engineering Receive 1518 Icbm common pool 1024 128 Transmit TCP own IP throttling IP throttling for LPP IP throttling for Sslpp Application Sheet 2 EIU dataﬁll Interdependency and auto-conﬁguration Table Liuinv Dataﬁll sequence and implications Table Liuinv dataﬁllLink interface unit name Link interface unit type Message switch card Message switch portLink interface unit number Location Link interface slot Software load nameProcessor information Processor product engineering code EIU MAC addresses Sheet 4 IP addresses Table IpnetwrkSample dataﬁll for table Liuinv Dataﬁll for table Ipnetwrk Ipnetwrk Computing module Internet Protocol Internet Protocol network subnet rangeEthernet interface unit. Enter EIU Ethernet interface unit range. Enter Parm Scrnflag EiuinterfaceDfltgtwyip Addr Sample dataﬁll for table Ipnetwrk GtwyipaddrIomnum Packlet Table Iprouter Supplementary information Dataﬁll Ethernet address resolution protocol Ethernet proxy address resolutionTable Iphost Sample dataﬁll for table Iprouter Index IndexNodeidx Node index Node name Node File processor index Internet porotocol address SuperNodeTransmission control Protocol Connections Application processor Unix index Support Operating SwitchInternet protocol host identification for Cmindex Computing module index Eiuindex Ethernet interface unit indexInternet protocol address for node Lanaddr Eliuindex Second IP address for Eliu host Nodename = MS Apux Message switch index Table IpthronSample dataﬁll for table Iphost Msindex EIU datafill Transmit capacity Local message switch nodeReceive capacity Option SuperNode nodeSynchronized and matched node index Application processor unit index Table Ipproto Sample dataﬁll for table IpthronField descriptions for table Ipthron for EIU datafill Field Subfield or Entry Explanation and action Refinement Iprsmtmo Sample dataﬁll for table IpprotoArprftmo Table Ensites Table EntypesSample dataﬁll for table Ensites Alphanumeric Table Exndinv Sample dataﬁll for table EntypesEntype External node type Pmloads External node key External node peripheral module typeExternal node number External node name DMS boot protocol Internet Protocol addressMachine address External node load file name Floor number RowBay position External node information External node no-link alarm External node one-link alarmExternal node alarm scan points Critical alarm scan point Major alarm scan point Minor alarm scan pointSample dataﬁll for table Exndinv Sheet 5 EIU maintenance 103 EIU diagnostics In-service stateOut-of-service diagnostics EIU MAP level In-service diagnostics In-service leaky bucket audit EIU overload control EIU sparing requirements Automated system maintenance EIU Eliu Manual system maintenance Logs relevant to EIU OA&M OMs relevant to EIU OA&M Appendix a EIU installation checklist 111 Software NTXF05AA EIUConsult the DMS-100 PM Software Release Document Datafill Appendix B EIU troubleshooting 113 EIU troubleshooting checklist Problem Probable cause Troubleshooting checklistTools Sheet 2 Appendix B EIU troubleshooting Standard 03.01 August Appendix C Using FTP 117 Automatic Record Length Detection What is FTP?Where DMS Volume listing FTP on the DMS-100 switchFTP cookbook File name conventions DMS FTP client commands FTP commands on the DMS-100 switch Command Description Obtaining the IP address of the SuperNode host Procedure 1 Establishing an FTP session Step Action Where Userid Is a valid userID for that hostTutorial basic FTP operations Ftp ‘nnn.nnn.nnn.nnn ’Page Ftp dir Ftp cd pathnameFtp cd ‘/team/bin’ Ftp lcd pathname Tutorial moving ﬁles Where Pathname Is a valid directory path ExampleIf the file If the filename Ftp lcd ‘/S00DTEMP’Ftp lrecl Ftp get ‘ﬁle1.txt54 ’ Ftp get ‘ﬁle1.dmo ’Ftp put ‘RECORDFILE’ ‘jan18.log’ Ftp cd ‘ /team/bin’ Ftp get ‘ﬁle1.bin’ Tutorial advanced operations Procedure 7 Showing the status of server sessionsFtp get ‘ﬁle1.bin1020’ Ftp svreserve Procedure 9 Remove a server userID and unreserve a sessionFtpadduserinfo ‘johnh’ ‘johnh’ ‘/S00DTEMP’ y Procedure 10 Adding a userID with limited set of commands Where Userid Is the userID ExampleFtpdeluserinfo ‘johnh’ Ftp commandmask mkdir set Procedure 11 Adding a userID with a new command timeout Ftpcommandmask FtpcommandtimeoutFTP operations reference WS ftp IPaddress WS pwdWS cd /pathname WS lcd /directory WS ascii WS get filenameWS site Lrecl WS put filename Newfilename WSput filename.image Filename WS put filename.sosimage FilenameuniplCM Ftpopen ‘IPaddress’ CM FTP ‘IPaddress’ CM cd ‘pathname’ CM lcd ‘/PATHNAME’CM lcd CM ls CM put filename CM binaryCM get ‘filename.load68k’ CM get ‘filename.bin1020’ Appendix D Using telnet 141 Telnet access to a switch Table Ipnetwrk Appendix D Using telnet Standard 03.01 August Appendix E Understanding IP and IP addressing What is internetworking?145 What is routing? Routing and routed protocols Planning overview Mapping the network Simple network map Detailed network diagram Choosing IP addresses IP address structure Class Range Description Class Range Description IP addressing class a Subnet mask class a Class a subnet masks IP addressing class B Subnet mask class B Class B subnet masks IP addressing class C Address masks IP addressing class D Network numbering example Address mask example Network node Firewalls and network security Simple network numbering Variable-width subnetworks Protocols related to Internet Protocol Internet control message protocol Bootstrap Protocol Reverse ARPProxy ARP Inverse ARP Open shortest path ﬁrst Page Appendix F EIU supported conﬁgurations 165 Host conﬁguration Router conﬁgurations Host and router conﬁguration Interface conﬁguration part Subnet ClassA .networkidB .subnetX .hostZ 47.105.150.3 Appendix G IP network number requests OverviewConsiderations for obtaining IP addresses 171 NIC IP address request form NIC IP network number request formYour Application Must be Typed Sheet 2 Sheet 3 Sheet 4 Appendix G IP network number requests Standard 03.01 August Application-speciﬁc units and supported services Appendix H ASU background informationLink interface unit Ethernet interface unit Frame relay interface unit 25/X.75 link interface unit Voice processor unit and Adas Network interface unitASUs and Cellular digital packet data External routers PlatformsLink peripheral processor LPP architecture ASU Single-shelf link peripheral processor On page 183 provides an overview of the Sslpp conﬁguration SuperNode SE link interface shelf Sslpp architecture SNSE-LIS architecture Shelf MAC address format Appendix I Obtaining a MAC address185 EIU MAC address format How to get the MAC address for an EIU Appendix I Obtaining a MAC address Standard 03.01 August List of terms 189 List of terms LIS MTP List of terms UDP Page Ethernet Interface Unit