Cabletron Systems SmartCell 6A000 manual Non-zero VPIs, Show vccmask

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Setting Up PVC Connections

Switch Administration

3.Use add pvc to successively create point-to-multipoint PVCs for ports B2, B3, and C1.

SmartCell ZX # add pvc
ConnType(PTP)	: pmp <specify point-to-multipoint
LowPort(A1)	: <port connected to broadcast workstation
LowVPI(0)	:
LowVCI(33)	: 100
HighPort(A1)	: b2 <port connected to first receiver workstation
HighVPI(0)	:
HighVCI(34)	: 100
FwdTrafficDescriptorIndex(1)	:
BkwTrafficDescriptorIndex(1)	: 4 <Index of Traffic Descriptor with AALType = 0
SmartCell ZX #
Perform step 3 for ports B3 and C1.

4.Connect the workstations to their respective ports.

5.Configure the workstations with the same subnet and VPI/VCI pair.

The broadcasting workstation on port A1 can send traffic to the receiving workstations on ports B2, B3, and C1.

4.5.3Non-zero VPIs

The SmartCell 6A000 uses 12 bits to define VPI/VCI pairs. vccmask determines how many of the 12 bits are used for the VPI and how many are used for the VCI. vccmask uses a 2-bit register to hold four different VPI/VCI 12-bit combinations. Table 4-1 shows the registers and the values that come preconfigured on the SmartCell 6A000.

Table 4-1 Values for VPI and VCI

VCC Index	VPI Bits	VPI Values	VCI Bits	VCI Values

0	0	0	12	0 to 4095

1	2	0 to 3	10	0 to 1023

2	4	0 to 15	8	0 to 255

3	6	0 to 63	6	0 to 63

Use the show vccmask command to view the four preconfigured VPI/VCI combinations.

SmartCell	ZX #	show vccmask
MaskIndex	VpiShift		VciShift
	(In	bits)	(In bits)

============================================================================

0	0	12
1	2	10
2	4	8
3	6	6

SmartCell ZX #

VCCMask combinations dictate what numerical values can be used for VPI/VCI pairs. Any VPI and VCI pairs that fit the bit distribution of one of the indexed combinations can be used for defining a PVC. If the VPI and VCI values do not fit one of the indexed combinations, the SmartCell 6A000 uses the closest matching indexed combination.

If you need to use values for VPI and VCI that do not fall within the range of one of the preconfigured indexed combinations, use the set vccmask command to replace one of the preconfigured combinations.

4-16 SmartCell 6A000 User Guide

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Contents SmartCell 6A000 User Guide Order number Part number 04-0045-01 Rev. aIi SmartCell 6A000 User Guide FCC Class a Notice Declaration of Conformity Addendum Safety Information Class 1 Laser Transceivers Fiber Optic Protective Caps Regulatory Compliance Summary Safety Revision History Table of Contents Troubleshooting Acronyms Index Table of Contents Xii SmartCell 6A000 User Guide List of Figures List of Figures Xiv SmartCell 6A000 User Guide List of Tables List of Tables Xvi SmartCell 6A000 User Guide Introduction Introduction SmartCell 6A000 User Guide Inspecting the Switch Switch Installation and SetupUnpacking the Switch Check Accessory Carton Contents6A000-04 and 6A000-02 front panels Installing the Switch Mbps STS-3c/STM-1 UTP5, 4 PortsInstalling the Switch Installing the SmartCell 6A000 Configuring the Switch Adapters provided for connecting to the switch6A000 console and network connections Using the Console Console CommandsEnter Adding and ModifyingClient UNIATMAddress 390000000000000000001441800020d414418000 Console HelpServerAddress 390000000000000000001441800020d414418001 IP Over ATM and Lane Creating AN IP Over ATM VlanATM Addressing for IP over ATM IpatmarpCreating AN Emulated LAN SmartCell ZX # add wellknownaddressELANType802.3 The default Ethernet is used ATM Addressing for LAN Emulation Elan1 ELANs Across Multiple SwitchesSwitch Clients Path /backdir/config-1 Switch AdministrationBacking UP and Restoring Switch Configuration Upgrading Operating Software Path server.imaUsing the df Command to Recover Setting UP RoutesUnsuccessful Update SmartCell ZX # show netprefix a4 Iisp RoutingCreating Iisp Routes ATMAdress 39000000000000000000144780 SW2s netprefixATMAdress 39000000000000000000144180 SW1s netprefix Iisp Routes Among Multiple SwitchesATMAdress 39000000000000000000141500 SW3s netprefix Default Iisp Routes Iisp routes between multiple switchesFor example, create a default Iisp route from port B1 Iisp Routes and Network Topology112255 112244 Routing LoopsIisp Metrics and Load Sharing SigConfig and PortAutoDetect with Iisp RoutingUNI Routes UNIATMAddress 440000000000000000001441800030E514418000IP Routing Logs and Alarms To see the route, enter the show route command on SW2Viewing and Filtering Messages How Log Messages and Alarm Messages DifferLog Message System Setting UP PVC Connections Console100 Connecting to Local Client Through Point-to-Point PVCPoint-to-Point PVCs 10.1.1.0Point-to-Multipoint PVCs Non-zero VPIs Show vccmaskSmartCell ZX # set portconfig a1 SmartCell ZX # show portconfig a1Traffic Management Traffic Descriptors8000 5000Call Admission Control Policy Class of Service Queues # set cacparamsPortNumberALL Port ID Queue EFCI, EPD, and RM Thresholds Class of Service Queue Allocation GuidelinesSmartCell ZX # show switchtrafficcongestion Traffic Management Logprint off command TroubleshootingTroubleshooting IP Over ATM Troubleshooting LAN Emulation Global Congestion Troubleshooting CongestionDiagnosing Congestion Port Congestion Troubleshooting TroubleshootingCongestion Troubleshooting Congestion Front Panel Appendix a Features and SpecificationsHardware Components CPU Module Figure A-1 Front panelSwitch Modules MSM and ESM Input/Output Port ModulesModule TypeCharacteristics Port Numbering Figure A-3 Group and port identifiersSignaling and Routing FeaturesSwitch Module 3 I/O ModulesManagement Connection ManagementLAN Servers and Clients ATM Forum LAN Emulation LanePhysical Specifications SpecificationsTechnical Specifications ATM Port Specifications Standards SpecificationsCPU Serial Port Pin-Out Descriptions RJ-45 DB-25 Pin Color DescriptionTable A-11 RJ-45 to DB-25 Adapter Modem Adapter Appendix A-12 SmartCell 6A000 User Guide Appendix B Smartcell 6A000 and Snmp Internet MIB HierarchyZeitnet Proprietary MIB Figure B-1 Internet MIB HierarchyInterpreting the Object Identifier Figure B-2 ZeitNet Private MIBsProprietary MIB Functions MIB Exceptions Console Commands That Affect the AgentClient for Snmp Management Non-ConformanceNot Supported SmartCell 6A000 User Guide Appendix B-7 Page Appendix C Technical Support FAX ServiceElectronic Services Telephone AssistanceRepair Services Hardware WarrantySoftware Warranty Appendix D Acronyms CBR CACCan CcittDVT DCCDTE NETFTP FCSFifo IeeeIPX IOMIP/ATM ITU-TSSLIS LESLeselan LLCNIC NetbeuiNFS NLSPMP PDUPMD PPDSAR-PDU SaalSAR SBETDM TaxiTCP TftpVCL VCCVCI VlanAcronyms Appendix D-12 SmartCell 6A000 User Guide Add wellknownaddress command 3-6 Address IndexSetting up routes Vlan Index SmartCell 6A000 User Guide