HP General IO Connectivity manual Configuring the High Availability Feature for X.25 over LLC2

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Configuration

Configuring the High Availability Feature for X.25 over LLC2

WARNING

Configuring the High Availability Feature for X.25 over LLC2

This section describes configuring the local and remote failover features for X.25 over LLC2 (XOL) interface. It also describes the local, remote, and combination of local and remote failover. XOL is not supported over APA (Auto Port Aggregation).

The failover is not transparent and results in loss of data and existing connections. After a failover, the XOL connections must be re-established.

NOTE

NOTE

84

Unique MAC Address Requirement

XOL High Availability (XOL HA) is based on sharing a unique MAC address for the primary and standby LAN cards, whichever is active. The use of a unique MAC address makes the card swap transparent from the XOL router side or peer system, which sees the same MAC address associated with the active interface.

To avoid MAC address collision, the system administrator must identify an unused, unique MAC address in their LAN subnet. The lanadmin command is used to change the MAC address of the card. After failover, the failed LAN card is reconfigured with its factory default MAC address.

Before you run the lanadmin command to set up the unique MAC address, you may test whether the MAC address chosen by you is selected by running the linkloop command. For more information, see linkloop (1m). The uniqueness of the MAC address is verified on the LAN cards currently active in the LAN segment. The linkloop command sends an OK message if the MAC address is already in use.

The routing table of the router connected to the host system must be updated with the unique MAC address identified by the user. If the XOL router supports the Hunt Group facility for XOL HA, the unique MAC

Chapter 3

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Contents Edition Manufacturing Part Number J2793-90073 E0607Legal Notices Contents Diagnostic Utilities PAD Services Tracing and Logging Utilities SUsing Non-English Subscription Forms Diagnostic Messages Tables Tables Tables Tables Figures Figures About the X.25 Product Introduction Link Architecture BSD IPC TCP/UDPApplication L7, Presentation L6, Session L5 Levels Transport Level L4 Packet/network Level L3 Data link L2 and Physical L1 Levels Data link L2 and Physical L1 Levels Chapter Installation Before you Install the software Installing Multiple X.25 Interface CardsHardware Requirements Hardware CompatibilityOS Platform and Version Compatibility MemoryRelated Parameters Example TM = 9,123,840 8.7 Mb Software Requirements Installing the X.25 Link Software StepInstalling the X.25 Link Software Chapter Configuration Configuring the X.25 Link Using SAMUsing SAM’s On-line Help Configuring an X.25 Address Field Descriptions Configuring X.25 Virtual Circuits VCs Configuring an Internet Address Configure Internet Address Configure Internet Address Field Descriptions IP Address and Default Subnet Masks ClassIP Address and Default Subnet Masks IP Address Class Default Subnet MaskModify IP Over X.25 Defaults Modify IP over X.25 Defaults Field Descriptions Verifying Level 3 ValuesVerify Level 3 Values Verify Level 3 Values Field DescriptionsDefault is Modulo-8 Switched VC Flow Control Field Descriptions Permanent VC Flow Control Field DescriptionsConfiguring the X.25 Link Verifying Level 2 Values Throughput Classes and Line SpeedsSettings for your configuration Verify Level 2 Values Field Descriptions Using Maximum Window-Size Settings with Modulo-128 Recommended Maximum Window Sizes Level 3 Packet Level 2 Window SizeConfiguring Remote System Access Add Internet Connectivity Dialog Add Internet Connectivity Field Descriptions X25init -cconfigurationfile-a ipmapfile Provide X.25 Information Field Descriptions Internet Addresses & Routes object list. SAM updates Configuring X.25 over LLC2 Configuration FilesPatch requirements for the XOL HA feature and configurable Additional XOL specific configuration parametersField Format Value Xoldsap Devicelan00x7c Lanboxid Lanboxaddr 0x080009c4728a 0x7e Example 3-3 LLC2 Configuration Ccitt Run the following command at the Cisco console Starting and Stopping Configuration Step Run the following command at the Cisco consoleSample setup and Configuration One Lan and Two Boxes configuration11 One LAN, Two Boxes Configuration To connect Host to BOX To connect Host to BOX To Connect Box 1 to Host Configuring Two Lans, with One Box Per Lan To configure Host to LAN 1 to BOX To Start and Stop above configurationTo Connect Box 0 to Host To Connect Box 1 to Host Troubleshooting LLC2 Configuration Configuring PAD Services Add/Modify PAD Terminal Emulation Local toRemote Add/Modify PAD Support Server Remote to Local Add/Modify PAD Printers Server Add/Modify Uucp ServerAdd/Modify X.3 Parameters PAD. As the terminal characteristics of your session change, Configuring the High Availability Feature Commands to be Configured in High Availability Packages Cluster Definition High Availability Configuration Example 3-4 One Example of Remote FailureChecking the Configuration $ x25checkX25check 250207 -i interface0p2 Configuring the High Availability Feature for X.25 over LLC2 Unique MAC Address RequirementConfiguring XOL HA for Local Failover Without ServiceGuard Local Failover13 Before the Failover After the Failover Example Configuring Standby Device and Unique MAC Address Configuring XOL HA for Remote Failover Using Service Guard Remote Failover15 Before the Failover Commands Used in the SG Package Control Scripts XOL Cluster DefinitionXOL Package Definition Example 3-6 XOL SG package for remote failover Remote Failover with Local Failover Support Using Service GuardThen, the above parameters take the following values Example Remote Failover with Local Failover support # Service Names and Commands Configuring the High Availability Feature for X.25 over LLC2 Verifying the X.25 Link Ping100 OLA/R Overview and Concepts 102 Important Terms and Concepts Terms used in this section MeaningOn-Line Replacement Planning and PreparationCard Compatibility On-Line AdditionCritical Resources Failover Actions / Single Points of Failure How to On-line Replace OLR a J3525A or J3526A PCI Card using SAMInterface card under consideration will be stopped before Disconnect messages. The connections will have to beThree Possible Critical Resource Analysis CRA Outcomes Screen Buttons Outcome Activate User Actions DisplaysChapter 109 110 How to On-line Add OLA a J3525A or J3526A PCI Card using SAM112 Chapter 113 114 Diagnostic Utilities Using Diagnostic Utilities Available Diagnostic Utilities Utility Description Refer toScope of X.25 Diagnostic Utilities PsidadBefore Using the Diagnostic Utilities X25check and x25server Example 1 Running x25check Interactively No Parameters120 Example 2 Running x25check With an X.121 Address Example 3 Running x25check With a Data PacketExample 1 Displaying the Current Configuration X25statExample 2 Displaying Global Statistics X25stat -d X25stat -g -dDiagnostic Utilities x25stat Level 3 State Output on Screen Description/MeaningLevel 3 State Level 2 Link State Output on Screen Description/MeaningLevel 1 Link State Output on Screen Description/Meaning Example 3 Displaying Virtual Circuit Data Packet CountersVC State Output on Screen Description/Meaning Example 4 Displaying Global X.25 Level 3 Statistics Example 5 Displaying X.25 Level 1 and 2 StatisticsVC State Chapter 129 Example 6 Displaying Virtual Circuit Status Example 7 Displaying Current IP to X.25 Address Mapping X25stat -aX25mibstat Example Statistics for x25mibstat X25mibstat Option RemarkPAD Services Ccitt Recommendations PAD services and the HP 9000 host PAD Support ProtocolsPAD Services as a Pipe Remote PAD Support x29serverOverview Remote PAD Support Call Acceptance Mechanism and System Security0x01000000 Configuring Remote PAD Support Configuring padspt ParametersSupported Remote PAD Terminals Padspt Parameters Chapter 141 Launching Applications Automatically Remote PAD Printer Support x29printd Remote PAD Printer Support x29printdSystem Requirements Remote Printer SupportConfiguring Remote PAD Printers 146 Configuring the Unix Line-printer Spooler for x29printd Printer Configuration ExamplesX29printd and lpsched Operation Verifying the Configuration Uucp Support x29uucpd Configuring Uucp PAD Support Receiving HPFile Contents Configuring the x29hosts filePaduucp Parameters Chapter 153 Configuring System and Device Files for Uucp At the dave systemChapter 155 At the bill system Chapter 157 158 Chapter 159 Command Mode Local PAD Emulation pademData Transfer Mode Configuring Local PAD EmulationParameter Descriptions 162 Chapter 163 PAD Commands PAD Command SetExtended Command Set 166 Configuring X.3 Profile Parameters Configuration Set SyntaxModifying Parameters Parameter ValuesDefault X.3 Parameters Parameter DescriptionsParameter Description Value MeaningChapter 171 172 Value Baud Rate 174 Chapter 175 176 Chapter 177 178 Tracing and Logging Utilities 180 Scope of X.25 Tracing and Logging Utilities Nettl SyntaxParameters Tracing Masks Keyword a 0x800000000x40000000 0x20000000184 Netfmt Chapter 185186 Creating a Filter File Filter File SyntaxFilter File Options System/subsystem Type Value Level FilterChapter 189 Filter File Examples Strace Chapter 1917030 7030 + 1 = Chapter 193Output Format Packet Type Parameters Displayed Frame Type Parameters DisplayedExamples of the strace Command Examples of strace Output Record Time Tics Pri Ind Mod Sub Data Num198 Strerr 200 Troubleshooting Troubleshooting Your X.25 Link Troubleshooting Commands Purpose Refer toTroubleshooting Flowcharts and Procedures Troubleshooting CommandsFlowchart 2 Procedures and Notes FlowchartChapter 205 Flowchart 2 Initialization Check See NoteFlowchart 3 Procedures and Notes Flowchart 3 Hardware and License CheckFlowchart 4 Procedures and Notes Flowchart 5 Procedures and Notes Flowchart 4 X.25 Configuration Check210 Flowchart 5 IP Over X.25 Check Recovering From a Power Failure For Systems With a Backup Power SupplyFor Systems With No Backup Power Supply Reporting Problems 214 Back-to-back Configuration on the Same Host Host216 Configuration and Troubleshooting Commands Command Summary218 Examples of x25init IP-to-X.121 Address Mapping TableSyntax for SVCs Syntax for PVCsFile Mapping Parameters 222 Chapter 223 224 Using Non-English Subscription Subscription Form Translations TranspacTable A-1 French Transpac Subscription Form ItapacTable A-2 Using Your Itapac Italian Subscription Form Throughput Class SettingTable A-4 Using your Iberpac Spanish Subscription Form 230 Configuration Files Configuration Files Table B-1 Etc/x25 directoryTable B-2 Etc directory Table B-3 Var/x25/log/x25server directory Table B-4Table B-5 Example Files X25initdef FileTable B-6 Appendix B 235 236 X25initsmpl File Table B-7238 X3config File 240 Example Files Appendix B 241 X29hosts File Table B-8Network Type File x25networks Table B-9 Diagnostic Messages Appendix C Diagnostic Message Example Cause Code Settings RESET/CLEAR Packet Codes Packet CodesRestart Packet Codes Diagnostic Messages Table C-1 No Additional Information DiagnosticTable C-2 Packet Type Invalid Diagnostic ExplanationTable C-3 Packet Not Allowed Diagnostic Table C-2 Packet Type InvalidTable C-3 Packet Not Allowed LCITable C-4 Timer Expired Diagnostic IncomingTable C-4 Timer Expired Appendix C 255 256 Appendix C 257 Table C-6 Category Miscellaneous Diagnostic Table C-7 International Problem and Maintenance DiagnosticTable C-7 International Problem and Maintenance Table C-8 DTE-Specific Signals DiagnosticTable C-8 DTE-Specific Signals Table C-9 OSI Network Service Problem DiagnosticTable C-9 OSI Network Service Problem NsapTable C-10 Higher Level Initiated Diagnostic Table C-10 Higher Level Initiated 264 Symbols Index266 267 268 269

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