Pnni Link Timing | Cabletron Systems 04-0053-01 manual

PNNI Routing

Managing Parallel PNNI Links

The physical connection from switch SWA2 to switch SWB2 is now advertised as a second logical link within the parent peer group (see Figure 3-4).

Second Logical Link

First Logical link

Level 72

First Physical

Link

SWA1
SWA3	SWB3	SWB1
SWA2		SWB2
		SWB2
	Second Physical Link

Aggregation Token = 0

Aggregation Token = 1

Figure 3-4 Aggregation token values and parallel links

3.3.2PNNI Link Timing

By default, if a PNNI link loses connectivity, the link fails after three (3) seconds. This short amount of time is designed as a buffer in case of minor latency. By waiting three seconds before releasing resources and tearing down the connection, a minor latency occurrence (less than three seconds) will not bring the link down, and will keep the PNNI network from going through the process of reconfiguration.

Note Link failure is determined either by hardware, when a “loss of frame” is detected; or by the signaling software, when the QSAAL link goes down.

SmartSwitch ATM User Guide 3-11

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Cabletron Systems 04-0053-01 manual Pnni Link Timing, Aggregation token values and parallel links

Contents

Part Number 04-0053-01 Rev. a Order Number SmartSwitch ATM Switch User Guide Ii SmartSwitch ATM Switch User Guide FCC Class a Notice Product Name Application of Council DirectivesManufacturer’s Name Manufacturer’s Address Safety Information Class 1 Laser Transceivers Fiber Optic Protective Caps Regulatory Compliance Summary Safety Document Name Revision History Table of Contents Virtual Ports and Static Connections Index Table of Contents Xii SmartSwitch ATM User Guide List of Figures List of Figures Xiv SmartSwitch ATM User Guide List of Tables List of Tables Xvi SmartSwitch ATM User Guide Introduction Contents of the User Guide Smartswitch ATM Switch Differences Subnet mask is for example only IP Over ATM and LaneCreating AN IP Over ATM Vlan IP address is for example only Creating an IP over ATM Vlan IP Over ATM and Lane Default IP Over ATM Local Client Address Default ATM Addressing for IP over ATMDefault Netprefix for SmartSwitch 2500 Family Switches Default Netprefix for SmartSwitch Creating AN Emulated LAN Ilmi ATM Addressing for LAN Emulation SmartSwitch 2500 Family Default Lane Addressing CPU MAC address = 0020D4144180 Elan number = Then SmartSwitch 6500 Default Lane AddressingLecs address is constructed from Chassis MAC address = 0020D4144180 Then Chassis MAC address = 00001DA3870B Then ELANs Across Multiple SwitchesChassis MAC address = 00001DA3870B Elan number = Then Distributed Lane Services Switch ClientsJust for this example Specify the LES address on SW2 Use the add leselan command to create an LES on switch SW2 Best Effort Elan Join Test Elan Join PoliciesSW1 # show client By Route Descriptor By MAC Address Lecselanlec Table Weight the policy atUse ? to see possible types Elan is specified by Elan number Lane Over WAN CircuitsPhysical Versus Logical BUS Multicasting No MAC address is specified Single PVP connection between clients and Lane services Lane Service Redundancy Using Lnni Lnni Redundant LECSs on same network Lane Load Sharing Lnni call set up load sharing How Lnni handles Elan join requests Setting up Lnni LECs SW2# set lnniinfo SW1 # stop lecsSW1 # stop les SW1 # set lnniinfo SW2 # add elan On SW1, create an Elan in this example, we create elan1Similarly, create the same Elan elan1 on SW2 SW1 # add elan SW2 # show elan Configuring Lnni Distributed LES/BUS ServersSW1 # show lecsneighborinfo On switch SW3, use the set lnniinfo to configure Lnni SW3 # start les LES SW1 # show lecsserverlistPage Pnni Routing Default Pnni AddressingSmartSwitch 2500 Family Default Node ID SmartSwitch 6500 Family Default Node ID SmartSwitch 6500 Default Node ATM Address SmartSwitch 2500 Family Default Node ATM Address MULTI-LEVEL Pnni Topology Connecting Multiple Peer Groups Change the tenth byte to SWA1 # set pnnipeergroupid Specifies node number Do the same for switch SWB3Highest priority in election process SWB3 # set pnnipglelection Do the same on switch SWB3SWA3 # show pnnipglelection Adding Higher-level Peer Groups Physical Connections Between Peer Groups Adding a third Pnni node for next level connectivity Managing Parallel Pnni Links SmartSwitch # show pnniinterface Aggregation Tokens Perform the same operation on switch SWB2 in group B7b2 Link on switch SWA2 comes from this port 4a3 Link on switch SWB2 comes from this port Aggregation token values and parallel links Pnni Link Timing SmartSwitch # set linkmonitortimeout This is an exterior route RoutingAdditional Routing Protocols Iisp Routes Iisp Routing Considerations Iisp Routing Example Two Iisp Routing Example One Iisp Link Timing Set linkmonitortimeout Advertise this address into the Pnni domain Take the default to make this an internal routeUNI Routes Yes UNI Link Timing Route Metrics Administrative WeightsCreating Route Metrics Create the incoming member of the metric pair Create the outgoing member of the metric pairEnter show pnnimetric to view the newly created metric pair 90.1.1.254 IP Routing for Management6b2 Index tag of our metric pair Route NET Table To see the route, enter the show route command on SW2 Point-to-Point PVCs SmartSwitch # add trafficdescriptorVirtual Ports and Static Connections PVC Connections Specify its VCI Point-to-Multipoint PVCsSpecify first port Specify its Vpci Perform for ports 7a3 and 7a4 Take the default valuesSet PCRCLP01 to zero Set client number Connecting to Local Switch Client Through a PVCConnect the end node to port 7a1 of the ATM SmartSwitch Use add ipatmclient to create an IP over ATM local client PVP Connections Turn off signalingTurn off Ilmi Specify the first port Use the show pvp command to display the PVP connection7b1 See note below Virtual Ports Connecting PVPs7a1.3, 5b2.3, A1.3, C5.3, and so on Available VPIs = 2MaxVpiBits Creating Virtual Ports Set to 1 this translates to VPIs = 2 1-1 = Default MaxVpiBits =Default MaxVciBits = Instance of set portconfig Specify virtual port number and Base VPI .1 means our Base VPI is oneVPIs used = Base VPI + 2 0 1 = 1 + 0 = MaxVciBits decrements by Soft PVC and PVP Connections Things To Watch Out For When Creating Virtual PortsSoft PVC and Soft PVP differences Creating a soft PVC Making Soft PVC and PVP Connections 6b3 Port on target switch SmartSwitch # add spvcaddressSmartSwitch # show spvcaddress 102 7a1 Port on source switch Creating a Soft PVP We use VPI= SmartSwitch # show spvp PortNumberALL Soft PVC and PVP Connections Traffic Management Capabilities Traffic ManagementTraffic Descriptors PeakCellRate CLP0+1, PeakCellRate CLP0, Tag CLP = No Traffic DescriptorPeakCellRate CLP0+1 PeakCellRate CLP0+1, PeakCellRate CLP0 Call Admission Control Policy SmartSwitch # set cacserviceclassbw SmartSwitch # set caceqbwallocschemeUbr CPU UBR Queue Buffers Corresponds to CBR 7a3MinIndex for SmartSwitch # set switchtrafficcongestion SmartSwitch # show switchtrafficcongestionEFCI, EPD, and RM Cell Marking Traffic Management Capabilities IP address of Tftp server Firmware Upgrades and Bootline CommandsUpdate Firmware Commands Unsuccessful Update Enter the go command to start the ATM SmartSwitch Bootline Commands=df s Accessing the Bootline Prompt Bootline Commands Explanations Scsm Changes the slave TSM/CPU to the masterSwms =df b Upgrading Boot Load firmware =df p Upgrading Post Diagnostic firmwareChanging the Default Boot Load Image =chpi Bootline CommandsFirmware Upgrades and Bootline Commands Upgrading Switch Operating firmware Start the ATM SmartSwitch by entering the go command Bootline Commands How ATM Address Filters Work ATM Filtering and ClockingPort ATM Address Filters Creating ATM Address Filters Source and Destination Address Masks ATM Address Filter Example Filter Considerations Regarding Lane and IP over ATM Port Clock ConfigurationFFFFFFFFFFFFFFFFFFFF00000000000000000000 Network Clocking Troubleshooting IP Over ATM Troubleshooting Troubleshooting LAN Emulation Switches in Same Peer Group Troubleshooting Pnni LinksSwitches in Different Peer Groups Fewer than 100 connections on a port Min = 64, Max = Troubleshooting CongestionDiagnosing Congestion Global Congestion Port Congestion Event Categories Events and Alarms SmartSwitch # set eventdisplay Viewing Events and Alarms SmartSwitch # set alarmdisplay Deleting Events and Alarms IP address of my Tftp server Login name on the serverPassword Saving Core Dumps Saving Core Dumps MIB, SMI, MIB Files and Internet MIB Hierarchy Appendix a Agent Support MIB, SMI, MIB Files and Internet MIB Hierarchy CSI ZeitNet Proprietary MIBs Relation Between Object Identifier and the Represented Value Supported SMI Formats Supported protocolsCSI ZeitNet Proprietary MIB Groups Ctron MIB Exceptions ATM SmartSwitch MIB SupportNon-Conformance Console Commands that Affect the Agent Managing AN ATM SmartswitchNot Supported Update firmware Backup Restore Reboot Default Community Strings Telephone Assistance FAX ServiceElectronic Services Appendix B Technical Support Software Warranty Hardware WarrantyRepair Services Index Accessing the boot load prompt 12,4-4,4-6 Iisp routing considerations Fail-over timing Route type parameter ZnPortTrafficCongTable ZnSwitchDiscoveryTableMulti-level Pnni topology PNN Enabling RM cell marking Changing EPD thresholds Vlan