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SmartSwitch 9A100
User Guide

35 Industrial Way
Rochester, NH 03866
USA
(603) 332-9400

Part Number 04-0049-01 Rev. A
Order Number 9032628

Содержание SmartSwitch 9A100

Страница 1: ...SmartSwitch 9A100 User Guide 35 Industrial Way Rochester NH 03866 USA 603 332 9400 Part Number 04 0049 01 Rev A Order Number 9032628...

Страница 2: ...SING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES Copyright 1998 by Cabl...

Страница 3: ...v i VV Vi i V 2 i 5 i V i v i vi i Vi V V i v i i i i i i V i i vi i Vi V V i i i Li i i V iV i i vi i Vi i i i 2p F i v V i i Vi V i i i i L i i L i v V Vi V i i i i i i i DOC CLASS A NOTICE This di...

Страница 4: ...y Berkshire RG13 2PZ England Conformance to Directive s Product Standards EC Directive 89 336 EEC EC Directive 73 23 EEC EN 55022 EN 50082 1 EN 60950 Equipment Type Environment Networking Equipment fo...

Страница 5: ...U CENELEC EN 60825 European Committee for Electrotechnical Standardization When operating within their performance limitations laser transceiver output meets the Class 1 accessible emission limit of a...

Страница 6: ...ronics p n ES1270 or equivalent U Using a fiber port cleaning swab Alcoa Fujikura LTS p n ACT 01 or equivalent saturated with optical grade isopropyl alcohol gently wipe the end surface of ferrules fi...

Страница 7: ...SUMMARY SAFETY The SmartSwitch 9A100 meets the safety requirements of UL 1950 CSA C22 2 No 950 EN 60950 IEC 950 and 73 23 EEC EMC The SmartSwitch 9A100 meets the EMC requirements of FCC Part 15 EN 550...

Страница 8: ...Document Name SmartSwitch 9A100 User Guide Document Part Number 04 0049 01 Rev A Document Order number 9032628 Author Carre Gibson Editor Ayesha Maqsood Illustrator Michael Fornalski Date Revision Des...

Страница 9: ...r 2 12 2 6 1 Installation Steps 2 14 2 6 2 Starting SmartSwitch ATM Administrator the First Time 2 15 2 6 3 Accessing Online Help 2 15 3 IP Over ATM and LANE 3 1 3 1 Creating an IP over ATM VLAN 3 1 3...

Страница 10: ...re Dumps 4 30 5 Troubleshooting 5 1 5 1 Troubleshooting IP over ATM 5 1 5 2 Troubleshooting LAN Emulation 5 2 5 3 Troubleshooting PNNI Links 5 3 5 4 Troubleshooting Congestion 5 4 5 4 1 Diagnosing Con...

Страница 11: ...Switch 9A100 User Guide xi TABLE OF CONTENTS C 3 Electronic Services C 1 C 4 Placing A Support Call C 1 C 5 Hardware Warranty C 2 C 6 Software Warranty C 2 C 7 Repair Services C 2 D Acronyms D 1 Index...

Страница 12: ...xii SmartSwitch 9A100 User Guide TABLE OF CONTENTS...

Страница 13: ...2 13 Figure 4 1 IISP route across PNNI domain 4 4 Figure 4 2 Routes needed for a second IISP switch 4 4 Figure 4 3 IP routing through SW1 for connectivity to the Ethernet network 4 9 Figure 4 4 Memor...

Страница 14: ...xiv SmartSwitch 9A100 User Guide List of Figures...

Страница 15: ...explanation 4 18 Table 4 3 Settings for QoS queues 4 22 Table 4 4 Boot load commands 4 24 Table A 1 Front panel LEDs A 1 Table A 2 Hardware specifications A 3 Table A 3 Physical specifications A 3 Tab...

Страница 16: ...xvi SmartSwitch 9A100 User Guide List of Tables...

Страница 17: ...SmartSwitch 9A100 switch By performing the steps described in the first two chapters of this manual your switch will be physically installed accessible on your Ethernet network and running either an I...

Страница 18: ...1 2 SmartSwitch 9A100 User Guide Introduction...

Страница 19: ...ping box Carefully remove the switch from its packing material 2 1 1 Check Accessory Carton Contents Open the accessory carton and check that it contains the following items 7 foot UTP cable terminate...

Страница 20: ...ordered your switch looks similar to the unit in Figure 2 1 The SmartSwitch 9A100 04 has four I O modules Figure 2 1 SmartSwitch 9A100 04 front panel Inspect the switch and make certain that its confi...

Страница 21: ...IOM 21 4 155 Mbps OC 3 STM 1 MMF SC 4 ports 6A IOM 22 4 155 Mbps STS 3c STM 1 UTP 5 RJ 45 4 ports 6A IOM 29 4 155 Mbps OC 3 STM 1 SMF IR SC 1 port MMF SC 3 ports 6A IOM 29 4 IR 155 Mbps OC 3 STM 1 SM...

Страница 22: ...n the chassis the switch module recognizes only one of them However the redundant power supply feature performs correctly if one power supply fails the other one takes over Follow the instructions bel...

Страница 23: ...SmartSwitch 9A100 User Guide 2 5 Switch Installation and Setup InstallingtheSwitch Figure 2 2 Installing the SmartSwitch 9A100 Rotate ejector to lock in place Metal Backpanel Card Guides Circuit Card...

Страница 24: ...n software to perform initial switch configuration Configure dumb terminals or PCs running emulation software with the following communication parameters U Baud rate 9600 U Data bits 8 U Stop bits 1 U...

Страница 25: ...100 the module emits a series of diagnostic messages If you inserted the module into a chassis that was turned off turn it on now the diagnostics will appear after a 6 second delay If you inserted the...

Страница 26: ...nc password admin admin is the default password The current user is Administrator Could not find setup file Running Setup Automatically SwitchName My_9A100 a switch name IPAddress 0 0 0 0 210 160 77 2...

Страница 27: ...assigned values for example flush a route table alias Create easier names for often used commands and their parameters Entering parameters at the command line is optional If a command requires paramet...

Страница 28: ...U private uni31 STS 3c MMF S 155 MB UP C1 private autoConfig STS 3c SMF I 155 MB DOWN C2 private autoConfig STS 3c MMF S 155 MB DOWN C3 private autoConfig STS 3c MMF S 155 MB DOWN C4 private autoConfi...

Страница 29: ...ot unique the console displays a numbered list of possible matching commands For example entering show pnnin is ambiguous because there are several commands that start with pnnin In response the Smart...

Страница 30: ...nt Number 0 127 LanName Name of the ELAN to join ServerType Type of LANE Server LECS LES ServerAddress ATM Address of the LANE Server IPAddress IP Address of the Client NetMask IP Netmask of the Clien...

Страница 31: ...s that are not available from the console interface U Use a graphical interface U Perform drag and drop operations U Manage all switches from one console U Perform transactions across multiple switche...

Страница 32: ...rive a or note the network path to the directory that contains the SmartSwitch ATM Administrator files Start the installation software NT 4 0 or Win95 click Start then click Run NT 3 51 select the Fil...

Страница 33: ...ton or press Enter The password is case sensitive T The SmartSwitch ATM Administrator window appears On the Applications menu select User Management 2 6 3 Accessing Online Help All SmartSwitch ATM Adm...

Страница 34: ...2 16 SmartSwitch 9A100 User Guide SmartSwitch ATM Administrator Switch Installation and Setup...

Страница 35: ...ther through the terminal port or through the Ethernet interface by telnet 2 Create a client on the switch and assign it as the ARP server for the VLAN SmartSwitch add ipatmclient ClientNumber 0 1 Ser...

Страница 36: ...VLAN members 5 Configure the ATM interface or adapter for end nodes and edge devices Typically configuration consists of designating IP over ATM as the protocol assigning the device an IP address and...

Страница 37: ...e if the switch s MAC address is 00 20 D4 14 41 80 and the switch s client IP address is 90 1 1 1 then the 20 byte ATM address of the ARP server is 39 00 00 00 00 00 00 00 00 00 14 41 80 00 00 5A 01 0...

Страница 38: ...AN001 Marketing ELAN name is Marketing not the default ELAN001 ServerType LECS ServerAddress No LANE server address is specified see note below IPAddress 90 1 1 1 IP address and subnet mask are includ...

Страница 39: ...ter for all end nodes and edge devices Typically configuration consists of specifying LAN Emulation as the protocol assigning the device an IP address that corresponds to the subnet of the switch s cl...

Страница 40: ...sses the byte that corresponds to the last byte of the MAC address is summed with the ELAN number For example the ATM address of the LESs on ELAN000 ELAN001 and ELAN010 are LES for ELAN000 39 00 00 00...

Страница 41: ...lf cannot be made unless the phone company has its own number and connection on its own phone system Similarly VLAN membership and the reachability of a SmartSwitch 9A100 on any particular VLAN depend...

Страница 42: ...3 8 SmartSwitch 9A100 User Guide F amV m h d F 2 6 3 F 1 m 2...

Страница 43: ...n files It does not back up an image of the operating software To perform a back up or restore you must have TFTP server software running on an end station that s reachable by the SmartSwitch 9A100 Th...

Страница 44: ...rposes of interoperability however the SmartSwitch 9A100 also supports these additional ATM routing protocols IISP Use to connect with devices that do not support PNNI UNI Use to connect end stations...

Страница 45: ...Route No 7 6 Create a route on the IISP device that refers to the net prefix 39 00 00 00 00 00 00 00 00 00 14 41 80 of port b2 on the SmartSwitch 9A100 Note For IISP routes to work with certain devic...

Страница 46: ...across PNNI domain A second IISP device Switch D is added behind Switch A If Switch D also needs to reach Switch C for LECS support you must define additional IISP routes between Switches D and C B an...

Страница 47: ...TM address SmartSwitch add atmroute PortNumber A1 a2 AtmAddress 39 00 00 00 00 00 00 00 00 00 14 59 00 00 11 22 33 44 55 00 PrefixLength 152 Index 0 Type Internal Scope 0 MetricsTag 0 SmartSwitch 4 En...

Страница 48: ...e Service Category administrative weight of 200 Max Cell Rate of 1000 cells per second and an Available Cell Rate of 750 cells per second First we create the outgoing member of the metric pair SmartSw...

Страница 49: ...fines its desirability to the PNNI routing service with regard to computing a path to a particular location The lower the administrative weight the more desirable the route For example a route with ad...

Страница 50: ...ulated LAN To reach SW2 with the Ethernet based NMS create an IP route that assigns SW1 s switch client as SW2 s default gateway to the network 128 205 99 0 Enter the following on SW2 see Figure 4 3 S...

Страница 51: ...e following categories Critical Impacts the entire switch leaving the system unavailable or in a degraded state Major Impacts a feature of the switch leaving the feature unavailable or in a degraded s...

Страница 52: ...ber The index number of the event in the circular buffer Event ID A unique ID assigned to the event Time Time of event in switch up time in hours minutes seconds and milliseconds Category Whether this...

Страница 53: ...artSwitch 9A100 console Use the set AlarmDisplay command to display alarms on the console as they occur SmartSwitch set alarmdisplay alarmDisplay OFF on SmartSwitch 4 4 3 Deleting Events and Alarms To...

Страница 54: ...raff Desc QoS Peak Cell Rate Sust Cell Rate Max Burst Size Aal Type Type Kb s Kb s Kb s Type CLP_0 CLP_0 1 CLP_0 CLP_0 1 CLP_0 CLP_0 1 2 CBR 2 1 0 100 0 0 0 0 5 176 NRTVBR 2 1 0 1585 0 0 0 0 5 SmartSw...

Страница 55: ...CLP0 0 MBSCLP01 0 MBSCLP0 0 QOSCLASS 0 AalType 5 md1 However on a point to multipoint connection there should be no traffic in the backward direction so we define the backward traffic descriptor with...

Страница 56: ...9A100 local client through a point to point PVC 1 Use add pvc to create the PVC SmartSwitch add pvc ConnType PTP we use a point to point PVC LowPortID a1 for this example we connect through port a1 Lo...

Страница 57: ...ng a PVC If the VPI and VCI values do not fit one of the indexed combinations the SmartSwitch 9A100 uses the closest matching indexed combination If you need to use values for VPI and VCI that do not...

Страница 58: ...see the change to port A1 SmartSwitch show portconfig a1 Port A1 Parameter Configured Current Sig Type autoConfig pnni10 Sig Role other symmetric Interface Type private private Max vpi bits 3 0 VPI on...

Страница 59: ...ion Call Admission Control CAC policies The service category for a connection Buffer memory allocation Threshold settings for anti congestion routines Caution Do not change traffic control settings un...

Страница 60: ...traffic descriptors for user defined PVCs All traffic descriptors used to define PVCs must be created by the user The Descriptor Type parameter in the example above corresponds to the traffic descript...

Страница 61: ...ard and backward traffic 4 6 2 Call Admission Control Policy Call Admission Control CAC policy defines the bandwidth allocation scheme used by the CAC when setting up connections The SmartSwitch 9A100...

Страница 62: ...CON CON CON LIB CON D3 0 CON CON CON LIB CON D4 0 CON CON CON LIB CON SmartSwitch If there are a large number of connections of a particular QoS on a particular port and these connections begin to slo...

Страница 63: ...on a per queue per port basis and are measured in cells 53 bytes The Min threshold is the amount of buffer space guaranteed to a call of a particular QoS on the corresponding port The Max threshold i...

Страница 64: ...eshold 4096 cells Queue 2 EFCI Threshold 4096 cells Queue 3 EFCI Threshold 4096 cells Queue 4 EFCI Threshold 4096 cells Low EPD Threshold 10922 cells High EPD Threshold 21845 cells Switch Discard Thre...

Страница 65: ...e is the default copy Clear all configurations stored within the flash file system Check boot load firmware version numbers Load switch firmware upgrades Set whether power on system tests POST are aut...

Страница 66: ...ether POST is set to run at switch start up none df Download Software Downloads software images from a TFTP Bootp server Different components of the switch software are downloaded depending on the par...

Страница 67: ...ation 2 Connect both the TFTP Bootp server and the SmartSwitch 9A100 to your Ethernet network Make sure that the TFTP Bootp server can be reached by the SmartSwitch 9A100 Ethernet interface 3 Connect...

Страница 68: ...ges boot ima Using TFTP to get bootfile c tftpboot boot boot ima Validity checks of the Boot Load Software Downloaded file All Validity checks OK Programming downloaded image into Boot Load Software1...

Страница 69: ...ion 2 Connect both the TFTP Bootp server and the SmartSwitch 9A100 to your Ethernet network Make sure that the TFTP Bootp server can be reached by the SmartSwitch 9A100 Ethernet interface 3 Connect a...

Страница 70: ...rnet interface 3 Connect a dumb terminal or PC running terminal emulation software to the SmartSwitch 9A100 Terminal port 4 Copy the SmartSwitch 9A100 switch operating software image into the appropri...

Страница 71: ...software Often this directory is tftpboot However it may be different with your TFTP server software The following is an example of a hot upgrade SmartSwitch update firmware ServerIP 214 95 77 240 Pat...

Страница 72: ...he following message appears Press any key to exit to boot load prompt stop the countdown by pressing any key The boot load prompt appears on the terminal screen 8 Enter the df s command The SmartSwit...

Страница 73: ...CoreDump command uses FTP to create the core_cpu and core_cmn files If your server does not run FTP create these files manually Then execute the set CoreDump command Note On UNIX systems make sure tha...

Страница 74: ...0000001 r14 e00d22f0 r15 00000008 d2000000 Core Dump Common DRAM dumped to tftpboot bobr core_cmn CPU DRAM dumped to tftpboot bobr core_cpu ffffffff ffffffff ffffffff ffffffff d2000010 ffffffff ffffff...

Страница 75: ...and to check the SmartSwitch 9A100 route table Are the destination addresses correct for the specified gateways Are there any routing loops Are one or more of the destination addresses mapped to the w...

Страница 76: ...Check for connectivity Try pinging between end nodes Ping from the SmartSwitch 9A100 using start ping to its end nodes If you cannot ping check physical connectivity disconnected cable and so on 2 Ch...

Страница 77: ...k does not appear in the Link list check the following Is the connecting port on each switch configured for PNNI If no configure both ports for PNNI Note On the SmartSwitch 9A100 use the show portconf...

Страница 78: ...tal cell drop rate equal to the Unknown VC cell drop rate If yes the switch is improperly set up Check the switch configuration If no this indicates global congestion Continue 2 Set the porttrafficcon...

Страница 79: ...trafficcongestion command Set the Max threshold to the value recommended in the Quality of Service Queue Allocation Guidelines section 4 Have you performed step 3 for every class of service for this p...

Страница 80: ...5 6 SmartSwitch 9A100 User Guide Troubleshooting Congestion Troubleshooting...

Страница 81: ...Function FAIL red Normally OFF ON indicates CPU failed STATUS amber Normally OFF ON indicates an error condition that prevents alarm information from being displayed to the console POWER green Normal...

Страница 82: ...ations Figure A 1 illustrates the front panel of the SmartSwitch 9A100 switch Figure A 1 SmartSwitch 9A100 front panel NO SYNC DATA NO SYNC DATA Console Terminal RJ 45 Ethernet Port 10Base T FAIL STAT...

Страница 83: ...memory cells 32 K flash memory 8 MB Serial port RS 232c compliant RJ 45 connector Ethernet port IEEE 802 3 compliant RJ 45 connector Table A 3 Physical specifications Specification Value Dimensions 50...

Страница 84: ...dBm 14 dBm 14 dBm 31 dBm 2 Km Cat 5 UTP 155 Mbps STS 3 or STM 1 RJ 45 v 100 m 75 ohm coax 44 7 Mbps DS 3 nonchannelized BNC female n a n a n a n a 150 m to DSX 75 ohm coax 44 7 Mbps DS 3 nonchanneliz...

Страница 85: ...NMPv1 SNMPv2c MIB II RFC 1213 Interface Table MIB RFC 1573 AToM MIB RFC 1695 AToM2 MIB pre standard LANE MIB ATM Forum ILMI 4 0 MIB ATM Forum IP over ATM MIB pre standard IISP PNNI MIB Switch hardware...

Страница 86: ...A 6 SmartSwitch 9A100 User Guide Technical Specifications Specifications...

Страница 87: ...rnet MIB Hierarchy The MIB structure is logically represented by a tree hierarchy see Figure B 1 The root of the tree is unnamed and splits into three main branches Consultative Committee for Internat...

Страница 88: ...is shown in Figure B 2 All nodes starting with zn represent Zeitnet objects The private ZeitNet MIB is represented by the object identifier 1 3 6 1 4 1 1295 or iso org dod internet private enterprise...

Страница 89: ...ct representing Lan Emulation Client information has an Object Identifier of 1 3 6 1 4 1 1295 2 3333 9 1 1 The znLecDDCount object representing the number of Data direct connections maintained by one...

Страница 90: ...h 9A100 supports Simple Network Management Protocol SNMP Both the SNMPv1 and SNMPv2c formats of the protocol are supported B 1 4 Supported SMI Formats Zeitnet proprietary MIBs are defined using SNMPv2...

Страница 91: ...Hardware and software system level information znSwitchDiscoveryTable 1 3 6 1 4 1 1295 2 3333 1 34 Neighbor switch configuration znConfig 1 3 6 1 4 1 1295 2 3333 2 Switch software configuration manage...

Страница 92: ...ons With the current implementation of MIB files conformance to ATM standards for the SmartSwitch 9A100 ATM switch includes the following exceptions Non Conformance atmInterfaceIlmiVpi Read only atmIn...

Страница 93: ...onnection between the SmartSwitch 9A100 and the NMS is the SmartSwitch 9A100 Ethernet interface Use the show SwitchConfig command to find the IP address of the SmartSwitch 9A100 An NMS can use this IP...

Страница 94: ...0 SNMP agent For detailed descriptions of these commands see the SmartCell 6A000 ZX 250 Reference Manual Community Sets the community strings for the SmartSwitch 9A100 TrapCommunity Specifies the NMS...

Страница 95: ...rt and Service C 1 TELEPHONE ASSISTANCE Our Technical Support Center is available Monday through Friday 8am to 8pm Eastern Time by calling 603 332 9400 C 2 FAX SERVICE You can fax support questions to...

Страница 96: ...e updates and patches for verified reported software issues C 7 REPAIR SERVICES Cabletron offers an out of warranty repair service for all our products at our Santa Clara Repair Facility Products retu...

Страница 97: ...yer Mux ABR Available Bit Rate AFI Authority and Format Identifier ANSI American National Standards Institute API Application Programming Interface ARP Address Resolution Protocol ASCII American Stand...

Страница 98: ...de Telegraphique et Telephonique Consultative Committee on International Telegraphy and Telephony CCR Current Cell Rate CDV Cell Delay Variation CER Cell Error Ratio CES Circuit Emulation Service CI C...

Страница 99: ...an standard for digital transmission service at 2 Mb s E 3 European standard for digital transmission service at 34 4 Mb s transports 16 E1 circuits E NET Ethernet EFCI Explicit Forward Congestion Ind...

Страница 100: ...econd GCAC Generic Call Admission Control GCRA Generic Cell Rate Algorithm GFC Generic Flow Control HEC Header Error Check IEEE Institute of Electrical and Electronic Engineers ICMP Internet Control M...

Страница 101: ...X Internetwork Packet Exchange protocol ITU TSS International Telecommunications Union Telecommunications Standards Sector ISDN Integrated Service Digital Network JPEG Joint Photographic Experts Group...

Страница 102: ...work LLC Logical Link Control LMI Local Management Interface MAC Media Access Control MAN Metropolitan Area Network MB S Megabits per second MBS Maximum Burst Size MCR Minimum Cell Rate MIB Management...

Страница 103: ...twork Interface NRT VBR Non Real Time Variable Bit Rate NRZ Non Return to Zero NSAP Network Services Access Point OAM Operations and Maintenance OAM P Operations Administration Maintenance and Provisi...

Страница 104: ...ogrammable Read Only Memory PTI Payload Type Indicator PTP Point to Point PTSE PNNI Topology State Element PTSE PNNI Topology State Packet PVC Permanent or Provisioned Virtual Circuit QOS Quality of S...

Страница 105: ...able Cell Rate SDH Synchronous Digital Hierarchy SEAL Simple Efficient Adaptation Layer SMF Single Mode Fiber SMDS Switched Multimegabit Data Service SNMP Simple Network Management Protocol SONET Sync...

Страница 106: ...Transmitter Receiver Interface TCP Transmission Control Protocol TD Traffic Descriptor TDM Time Division Multiplexing TFTP Trivial File Transfer Protocol TLV Type Length and Value UBR Unspecified Bit...

Страница 107: ...able Bit Rate Non real Time VC Virtual Circuit VCC Virtual Channel Connection VCI Virtual Channel Identifier VCL Virtual Channel Link VLAN Virtual LAN VP Virtual Path VPC Virtual Path Connection VPI V...

Страница 108: ...D 12 SmartSwitch 9A100 User Guide Acronyms...

Страница 109: ...ing 3 3 3 6 ATM ports A 4 ATM routing 4 2 B backup 4 1 bandwidth allocation 4 17 boot load commands 4 24 chpi 4 24 clfs 4 24 dcfg 4 24 df 4 24 go 4 24 he 4 24 memory locations affected 4 25 ponf 4 24...

Страница 110: ...estion 5 4 display 2 9 DS3 2 3 empty cell 2 3 framing 2 3 length 2 3 mode 2 3 scrambling 2 3 timing 2 3 E E3 2 3 empty cell 2 3 mode 2 3 scrambling 2 3 timing 2 3 early packet discard 4 22 EFCI 4 22 E...

Страница 111: ...nfiguration 2 8 inserting a 6A000 2 4 inspecting the switch 2 2 installation 2 4 installing the switch 2 4 IP over ATM add ipatmclient 3 1 addressing 3 3 ARP server 3 1 client 3 2 MAC address 3 3 serv...

Страница 112: ...idelines 4 22 real time variable bit rate 4 21 thresholds 4 21 unspecified bit rate 4 21 QoS queues 4 21 queue thresholds 4 21 R remove 2 9 repair services C 2 resource management cells 4 22 restart 2...

Страница 113: ...management 4 17 CLP 4 17 congestion 4 22 EFCI 4 22 EPD 4 22 maximum burst size 4 17 minimum cell rate 4 17 peak cell rate 4 17 queue allocation 4 22 RM cells 4 22 sustained cell rate 4 17 thresholds...

Страница 114: ...I 6 SmartSwitch 9A100 User Guide Index VPI non zero values 4 15 VPI bits 4 15 VPI VCI pairs 4 15 Z ZeitNet Cabletron proprietary MIBs B 2...

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