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

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

Contents

SmartCell 6A000 User Guide Order number Part number 04-0045-01 Rev. a Ii 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 Contents 6A000-04 and 6A000-02 front panels Installing the Switch Mbps STS-3c/STM-1 UTP5, 4 Ports Installing the Switch Installing the SmartCell 6A000 Configuring the Switch Adapters provided for connecting to the switch 6A000 console and network connections Using the Console Console Commands Enter Adding and ModifyingClient UNIATMAddress 390000000000000000001441800020d414418000 Console HelpServerAddress 390000000000000000001441800020d414418001 IP Over ATM and Lane Creating AN IP Over ATM Vlan ATM Addressing for IP over ATM Ipatmarp Creating AN Emulated LAN SmartCell ZX # add wellknownaddress ELANType802.3 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.ima Using the df Command to Recover Setting UP RoutesUnsuccessful Update SmartCell ZX # show netprefix a4 Iisp RoutingCreating Iisp Routes ATMAdress 39000000000000000000144780 SW2s netprefix ATMAdress 39000000000000000000144180 SW1s netprefix Iisp Routes Among Multiple SwitchesATMAdress 39000000000000000000141500 SW3s netprefix Default Iisp Routes Iisp routes between multiple switches For example, create a default Iisp route from port B1 Iisp Routes and Network Topology 112255 112244 Routing Loops Iisp Metrics and Load Sharing SigConfig and PortAutoDetect with Iisp RoutingUNI Routes UNIATMAddress 440000000000000000001441800030E514418000 IP Routing Logs and Alarms To see the route, enter the show route command on SW2 Viewing and Filtering Messages How Log Messages and Alarm Messages DifferLog Message System Setting UP PVC Connections Console 100 Connecting to Local Client Through Point-to-Point PVCPoint-to-Point PVCs 10.1.1.0 Point-to-Multipoint PVCs Non-zero VPIs Show vccmask SmartCell ZX # set portconfig a1 SmartCell ZX # show portconfig a1 Traffic Management Traffic Descriptors 8000 5000 Call Admission Control Policy Class of Service Queues # set cacparams PortNumberALL 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 panel Switch Modules MSM and ESM Input/Output Port Modules Module TypeCharacteristics Port Numbering Figure A-3 Group and port identifiers Signaling and Routing FeaturesSwitch Module 3 I/O Modules Management Connection ManagementLAN Servers and Clients ATM Forum LAN Emulation Lane Physical Specifications SpecificationsTechnical Specifications ATM Port Specifications Standards Specifications CPU Serial Port Pin-Out Descriptions RJ-45 DB-25 Pin Color Description Table 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 Hierarchy Zeitnet Proprietary MIB Figure B-1 Internet MIB Hierarchy Interpreting the Object Identifier Figure B-2 ZeitNet Private MIBs Proprietary MIB Functions MIB Exceptions Console Commands That Affect the AgentClient for Snmp Management Non-Conformance Not Supported SmartCell 6A000 User Guide Appendix B-7 Page Appendix C Technical Support FAX ServiceElectronic Services Telephone Assistance Repair Services Hardware WarrantySoftware Warranty Appendix D Acronyms CBR CACCan Ccitt DVT DCCDTE NET FTP FCSFifo Ieee IPX IOMIP/ATM ITU-TSS LIS LESLeselan LLC NIC NetbeuiNFS NLS PMP PDUPMD PPD SAR-PDU SaalSAR SBE TDM TaxiTCP Tftp VCL VCCVCI Vlan Acronyms Appendix D-12 SmartCell 6A000 User Guide Add wellknownaddress command 3-6 Address Index Setting up routes Vlan Index SmartCell 6A000 User Guide