Class of Service Queues | Cabletron Systems SmartCell 6A000 manual

Switch Administration

Traffic Management

By default, all ports on the SmartCell 6A000 are set for liberal Call Admission Control. Use the show cacparams command to view the current CAC policies used by each port.

SmartCell ZX# show cacparams
PortNumber(ALL)		:
Port#	Allocation Scheme

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

A1	LIBERAL
A2	LIBERAL
A3	LIBERAL
A4	LIBERAL
B1	LIBERAL
B2	LIBERAL
B3	LIBERAL
B4(CPU)	LIBERAL
C1	LIBERAL
C2	LIBERAL
C3	LIBERAL
C4	LIBERAL
D1	LIBERAL
D2	LIBERAL
D3	LIBERAL
D4	LIBERAL
SmartCell ZX#

If there are a large number of connections on a particular port, and these connections begin to slow down and show signs of congestion, use the set cacparams command to change the CAC policy to moderate or conservative.

SmartCell ZX	# set cacparams
PortNumber(ALL)		: b2
AllocScheme(LIBERAL)		: conservative
SmartCell ZX	#

4.6.3Class of Service Queues

The SmartCell 6A000 performs buffering using a shared-memory architecture. Buffer space is divided into queues for each class of service (QoS). In turn, ports are allocated some portion of each of the QoS queues. This allocation is controlled on a per-port basis by the porttrafficcongestion commands.

SmartCell 6A000 User Guide 4-21

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Cabletron Systems SmartCell 6A000 manual Class of Service Queues, # set cacparams

Contents

Order number Part number 04-0045-01 Rev. a SmartCell 6A000 User Guide 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 Check Accessory Carton Contents Switch Installation and SetupUnpacking the Switch Inspecting the Switch 6A000-04 and 6A000-02 front panels Mbps STS-3c/STM-1 UTP5, 4 Ports Installing the Switch Installing the Switch Installing the SmartCell 6A000 Adapters provided for connecting to the switch Configuring the Switch 6A000 console and network connections Console Commands Using the Console Client Adding and ModifyingEnter ServerAddress 390000000000000000001441800020d414418001 Console HelpUNIATMAddress 390000000000000000001441800020d414418000 Creating AN IP Over ATM Vlan IP Over ATM and Lane Ipatmarp ATM Addressing for IP over ATM SmartCell ZX # add wellknownaddress Creating AN Emulated LAN ELANType802.3 The default Ethernet is used ATM Addressing for LAN Emulation Switch Clients ELANs Across Multiple SwitchesElan1 Backing UP and Restoring Switch Configuration Switch AdministrationPath /backdir/config-1 Path server.ima Upgrading Operating Software Unsuccessful Update Setting UP RoutesUsing the df Command to Recover ATMAdress 39000000000000000000144780 SW2s netprefix Iisp RoutingCreating Iisp Routes SmartCell ZX # show netprefix a4 ATMAdress 39000000000000000000141500 SW3s netprefix Iisp Routes Among Multiple SwitchesATMAdress 39000000000000000000144180 SW1s netprefix Iisp routes between multiple switches Default Iisp Routes Iisp Routes and Network Topology For example, create a default Iisp route from port B1 Routing Loops 112255 112244 UNIATMAddress 440000000000000000001441800030E514418000 SigConfig and PortAutoDetect with Iisp RoutingUNI Routes Iisp Metrics and Load Sharing IP Routing To see the route, enter the show route command on SW2 Logs and Alarms Log Message System How Log Messages and Alarm Messages DifferViewing and Filtering Messages Console Setting UP PVC Connections 10.1.1.0 Connecting to Local Client Through Point-to-Point PVCPoint-to-Point PVCs 100 Point-to-Multipoint PVCs Show vccmask Non-zero VPIs SmartCell ZX # show portconfig a1 SmartCell ZX # set portconfig a1 Traffic Descriptors Traffic Management 5000 8000 Call Admission Control Policy # set cacparams Class of Service Queues PortNumberALL Port ID Queue SmartCell ZX # show switchtrafficcongestion Class of Service Queue Allocation GuidelinesEFCI, EPD, and RM Thresholds Traffic Management Troubleshooting IP Over ATM TroubleshootingLogprint off command Troubleshooting LAN Emulation Diagnosing Congestion Troubleshooting CongestionGlobal Congestion Port Congestion Troubleshooting TroubleshootingCongestion Troubleshooting Congestion Hardware Components Appendix a Features and SpecificationsFront Panel Figure A-1 Front panel CPU Module Input/Output Port Modules Switch Modules MSM and ESM Module TypeCharacteristics Figure A-3 Group and port identifiers Port Numbering 3 I/O Modules FeaturesSwitch Module Signaling and Routing ATM Forum LAN Emulation Lane Connection ManagementLAN Servers and Clients Management Technical Specifications SpecificationsPhysical Specifications Standards Specifications ATM Port Specifications RJ-45 DB-25 Pin Color Description CPU Serial Port Pin-Out Descriptions Table A-11 RJ-45 to DB-25 Adapter Modem Adapter Appendix A-12 SmartCell 6A000 User Guide Internet MIB Hierarchy Appendix B Smartcell 6A000 and Snmp Figure B-1 Internet MIB Hierarchy Zeitnet Proprietary MIB Figure B-2 ZeitNet Private MIBs Interpreting the Object Identifier Proprietary MIB Functions Non-Conformance Console Commands That Affect the AgentClient for Snmp Management MIB Exceptions Not Supported SmartCell 6A000 User Guide Appendix B-7 Page Telephone Assistance FAX ServiceElectronic Services Appendix C Technical Support Software Warranty Hardware WarrantyRepair Services Appendix D Acronyms Ccitt CACCan CBR NET DCCDTE DVT Ieee FCSFifo FTP ITU-TSS IOMIP/ATM IPX LLC LESLeselan LIS NLS NetbeuiNFS NIC PPD PDUPMD PMP SBE SaalSAR SAR-PDU Tftp TaxiTCP TDM Vlan VCCVCI VCL Acronyms Appendix D-12 SmartCell 6A000 User Guide Index Add wellknownaddress command 3-6 Address Setting up routes Vlan Index SmartCell 6A000 User Guide