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1-4

Configuring PVCs

The VCI value of cells does not change as the cell is switched through the
ATM network via a virtual path. Each virtual path must originate at a switch
fabric, pass through zero or more switch fabrics and terminate at another
switch fabric. The origination and termination points are referred to as origi-
nating and terminating paths. Virtual paths are switched through switch fab-
rics via through paths. Virtual paths are made up of an originating path, zero
or more through paths, and a terminating path.

Figure 1.4 -

Composition of a Virtual Path

1.2.1

Through Paths

Through paths route an entire virtual path through an ATM switch fabric.
When a cell is received by a switch fabric on a through path, the VPI is exam-
ined to determine the output port and VPI. The VCI component of the ATM
header remains unchanged and can have any value. So, all of the channels
within the through path will be switched correctly without altering the VCI
value of cells on these channels.

Four parameters are needed to define a through path on a Cabletron switch
fabric: input port, input VPI, output port, and output VPI. Through paths are
represented as follows:

<iport> <ivpi> <oport> <ovpi>

Through Path

Virtual Path

Terminating Path

Originating Path

Cabletron

ATM Switch

Cabletron

ATM Switch

Cabletron

ATM Switch

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Содержание MMAC-Plus SFCS-1000

Страница 1: ...ATM Switch Configuration Manual...

Страница 2: ......

Страница 3: ...INCIDENTAL INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON...

Страница 4: ...se harmful interference to radio communications Operation of this equipment in a residential area is likely to cause interference in which case the user will be required to correct the interference at...

Страница 5: ...in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils nu...

Страница 6: ...Notice iv...

Страница 7: ...Circuits PVCs 1 15 1 5 1 Creating a Virtual Path 1 15 1 5 1 1 Terminating a PVC at a Switch 1 18 1 5 1 2 Creating ATM ARP Entries 1 19 1 5 1 3 Listing ATM ARP Entries 1 20 1 5 2 Creating a Virtual Cha...

Страница 8: ...uring an Emulated LAN 3 1 Introduction 3 1 3 2 Emulated LAN Components 3 2 3 2 1 LAN Emulation Client LEC 3 3 3 2 2 LAN Emulation Configuration Server LECS 3 3 3 2 3 LAN Emulation Server LES 3 3 3 2 4...

Страница 9: ...5 Configuring DS 3 Framing 5 4 5 6 Configuring DS 3 Payload Scrambling 5 5 5 7 Configuring DS 3 Loopback 5 6 5 7 1 Cell Loopback 5 7 5 7 2 Payload Loopback 5 7 5 7 3 Diagnostic Loopback 5 7 5 7 4 Lin...

Страница 10: ...7 A 3 1 About Command A 8 A 3 2 Close Command A 9 A 3 3 Configuration Commands A 10 A 3 4 Exit Command A 10 A 3 5 Help Command A 10 A 3 6 History Command A 11 A 3 7 Open Command A 12 A 3 8 Operation C...

Страница 11: ...ying Network Module Configuration Information B 42 B 6 2 Configuring Distributed Timing on a Network Module B 43 B 6 3 Configuring Traffic on a Network Module B 48 B 7 NSAP Configuration Commands B 53...

Страница 12: ...ing Path B 128 B 16 2 Creating a UNI 3 0 Signalling Path B 129 B 16 3 Displaying UNI 3 0 Signalling Paths B 131 B 17 Usage Parameter Control Configuration Commands B 134 B 17 1 Deleting a UPC Traffic...

Страница 13: ...Remote Host C 18 C 4 8 Renaming a FLASH File C 19 C 5 Setting or Changing the Password C 19 C 6 Upgrading the Switch C 20 C 7 Displaying and Changing the Version of Software C 21 C 8 Rebooting the Sw...

Страница 14: ...ap Destinations E 12 Appendix F ForeThought PNNI F 1 1 Hello Protocol F 2 F 1 2 Topology Database Exchange F 2 F 1 3 Flooding F 2 F 1 4 Hierarchical Routing F 3 F 2 The Physical Network F 5 F 2 1 Peer...

Страница 15: ...an Emulated LAN Provides an overview of LAN Emulation and gives an example of how to configure an Emulated LAN Chapter 4 SONET Configuration Contains configuration information for supporting SONET net...

Страница 16: ...E SNMP Configuration Describes the remote SNMP configura tion of a switch Appendix F PNNI Describes how this scalable routing and signalling pro tocol can be used to simplify large network topologies...

Страница 17: ...nditions true Important Information Indicators To call your attention to safety and otherwise important information that must be reviewed to ensure correct and complete installation as well as to avoi...

Страница 18: ...or software if you do not follow these instructions Information contained in NOTE statements has been found important enough to be called to the special attention of the operator and will be set off...

Страница 19: ...etwork modules contain Class 1 lasers NM 2 155SMSRA 1 NM 2 155SMSRB 1 NM 2OC3 SMSRA 1 NM 4 155SMSRA 1 NM 4 155SMSRB 1 NM 4OC3 SMSRA 1 NM 4OC3 SMSRA 1A NM 4OC3 SMSRB 1 NM 2 155SMSRC NM 4 155SMSRC NM 2...

Страница 20: ...e and frequency inscribed on the equipment s electrical rat ing label Never push objects of any kind through openings in the equipment Dangerous voltages may be present Conductive foreign objects coul...

Страница 21: ...ould never be placed near a radiator or heat register Power Cord Connection WARNING These products are designed to work with sin gle phase power systems having a grounded neutral conductor To reduce t...

Страница 22: ...xx PREFACE...

Страница 23: ...the cell For example an ATM switch fabric can be configured such that any cell received on port A1 with VPI VCI 0 32 is switched to port B2 with VPI VCI 0 35 The translation from input port VPI and V...

Страница 24: ...equipment supports the SPANS protocol so it is sometimes neces sary to create virtual paths and virtual channels manually in order to estab lish a connection between two ATM endpoints The focus of the...

Страница 25: ...nnels in a Virtual Path A single virtual path can be used to route many virtual channels through the ATM network Because a virtual path simply routes virtual channels through the network a cell is gua...

Страница 26: ...Virtual Path 1 2 1 Through Paths Through paths route an entire virtual path through an ATM switch fabric When a cell is received by a switch fabric on a through path the VPI is exam ined to determine...

Страница 27: ...ion they are unidirectional For example switch fabric X is configured with the through path B1 20 C1 20 If a cell is received on port C1 with VPI 20 it will not be transmitted on port B1 with a new VP...

Страница 28: ...nating path to an originating path See the section about virtual channels for more information Originating and termi nating paths are the endpoints of virtual paths and are used primarily for bandwidt...

Страница 29: ...0 0K 255 5 N A pvc 1D3 0 terminate 155 0M 0 0K 255 4 N A pvc 1D4 0 terminate 155 0M 0 0K 255 4 N A pvc 1CTL 0 terminate N A 0 0K 511 28 N A pvc originate 1C1 0 155 0M 0 0K 255 4 N A pvc originate 1C2...

Страница 30: ...dicates pvc for a Permanent Virtual Circuit spans for a Switched Virtual Circuit or uni for a UNI 3 0 signalling path To list advanced information about all of the existing virtual paths enter the fol...

Страница 31: ...been enabled for this originating path VBROB Lists the bandwidth overbooking level assigned to this path specified as a percentage Valid val ues are integers greater than or equal to 1 The default is...

Страница 32: ...rt with a new VPI and a new VCI Unlike through paths virtual channels describe a single virtual connection between two endpoints con nected to a switch fabric Figure 1 8 An Example of a Virtual Channe...

Страница 33: ...der to establish two way communications between two ports on a switch fabric two virtual channels are necessary because virtual channels are unidi rectional For example switch fabric A is configured w...

Страница 34: ...d on Originating Path C2 2 Furthermore in these examples the terminating path C3 3 and originating path C2 2 must have enough bandwidth allocated to support the total band width used by the virtual ch...

Страница 35: ...pans 1C1 0 16 1CTL 0 58 0 uni30 1C2 0 5 1CTL 0 37 0 uni30 1C2 0 14 1CTL 0 36 0 spans 1C2 0 15 1CTL 0 35 0 spans 1C2 0 16 1CTL 0 59 0 uni30 1C3 0 5 1CTL 0 40 0 uni30 1C3 0 14 1CTL 0 39 0 spans 1C3 0 15...

Страница 36: ...Indicates the outgoing virtual channel number UPC Shows the integer index that refers to the specific traffic contract assigned to this VCI Protocol Displays what type of protocol is running on this c...

Страница 37: ...enter AMI and manually delete the PVC that was created It is recommended that users back up the configuration database frequently 1 5 1 Creating a Virtual Path To create a new virtual path log in to...

Страница 38: ...s the maximum number of channels that can be created on this path or port Indicates the incoming port number vpi Indicates the incoming virtual path number orig Specifies the virtual path to be create...

Страница 39: ...alue greater than or equal to 1 The default is 100 which means that no overbooking has been defined Values less than 100 cause underbooking Values greater than 100 denote overbooking shapeivpi vpi Ind...

Страница 40: ...c port The 4 means the connection is coming out of the switch board in slot 4 through the intra fabric port The E represents the intra fabric port The 2 means the connection is destined for switch boa...

Страница 41: ...ed instantly by the SCP At the same time a command is entered automatically into the current configuration database which creates this ATM ARP entry every time the SCP is restarted To create a new Cla...

Страница 42: ...10 qaa0 0x47 0005 80 ffe100 0000 f21b 0137 002048100be6 00 198 29 17 15 qaa0 0x47 0005 80 ffe100 0000 f21b 0137 00204810048d 00 198 29 17 52 qaa0 0x47 0005 80 ffe100 0000 f21b 0138 0020481b0138 00 Th...

Страница 43: ...path number ivci Indicates the incoming virtual channel number oport Indicates the outgoing port number ovpi Indicates the outgoing virtual path number ovci Indicates the outgoing virtual channel numb...

Страница 44: ...the switch board in slot 2 through the intra fabric port The E represents the intra fabric port The 4 means the connection is destined for switch board in slot 4 2E4 then becomes the input port in the...

Страница 45: ...ta makes a request for a dedicated PCR Sustainable Cell Rate SCR and Maximum Burst Size MBS Once these amounts are defined the ATM network must be able to guarantee these rates for the duration of the...

Страница 46: ...ssessed for compliance with traffic parameters If the traffic parameters dictate that non compliant cells should be tagged the CLP bit will be set to 1 or CLP 1 which means that upon experiencing con...

Страница 47: ...ond bucket measures the SCR or the rate at which the bucket drains and the MBS or the depth of the second bucket 1 7 3 UNI 3 0 UPC Traffic Contract Parameters The ATM Forum has defined different types...

Страница 48: ...CLP 0 cells in both groups are tagged and the non compliant CLP 1 cells are dropped The vbr pcr01 scr01 mbs01 contract is for VBR traffic It uses both leaky buckets simultaneously The first bucket as...

Страница 49: ...ntract to assess NOTE Remember when you create this UPC con tract it is not actually used until you assign it to a VPC VCC or SPANS path The UPC parameter is one of the five combinations of traffic pa...

Страница 50: ...1 28 Configuring PVCs...

Страница 51: ...uits PVCs and or Switched Virtual Circuits SVCs SVC management is performed via the ATM Forum UNI 3 0 Specification which specifies Q 2931 Q 2931 is a broadband signalling protocol designed to establi...

Страница 52: ...een LISs must occur through IP routers 2 1 2 Classical IP Interfaces In order to support routing between multiple LISs the host adapter software allows a host to be configured as a member of and a rou...

Страница 53: ...tandard IP routing all traffic sent out an fa interface will use FORE IP while all traffic sent out a qa interface will use Classical IP Each of the fa interfaces should be assigned an IP address on a...

Страница 54: ...plements the ICD ATM format Per the UNI 3 0 specification all private networks should accept initial call set up messages containing ATM addresses with any of the approved formats and forward the call...

Страница 55: ...NSAP addresses must be manually configured Because a non Cabletron switch does not support ILMI it can not supply an NSAP prefix to the hosts Therefore the user must assign a unique valid prefix to th...

Страница 56: ...remember to use the interface associated with the given LIS The ARP server address is normally configured into each host at installation time the appropriate commands are placed in the firmware downl...

Страница 57: ...ssical IP ILMI and RFC 1577 are automatically active in the Rev 3 0 adapter code ARP server client configurations are run on the Classical IP interfaces Classi cal IP interface names are of the form q...

Страница 58: ...e interface With the preconditions met and the required information obtained ARP serv ers may be created with the following steps Two methods are shown An ARP server can be configured for a one time u...

Страница 59: ...e_atm 4 On each host requiring service from the ARP server use the fol lowing command atmarp p ARP Server NSAP address interface name 2 3 2 2 Configuring a Host as a Permanent ARP Server To configure...

Страница 60: ...fe100 0000 f215 0ce5 002048100c47 03 qaa0 Once these changes have been made the ARP server will be active on boot Similarly each host attached to the ARP server can access the ARP server on boot 2 3 2...

Страница 61: ...ess of that SCP for the relevant interface qaa0 qaa3 using the following AMI com mand configuration atmarp getnsap interface For example configuration atmarp getnsap qaa0 qaa0 NSAP address 47000580ffe...

Страница 62: ...erver Since there is no mechanism for ARP servers to exchange mapping information with each other it is imperative that each LIS be configured with only one ARP server When a host wants to communicate...

Страница 63: ...e again as static entries By using static ARP entries in the above fashion the ability for all hosts to communicate is maintained There are some restrictions on the number of hosts that can be maintai...

Страница 64: ...ible to establish an SVC In this case a Classical IP PVC can be used for communication On each of the hosts atmarp c is used to establish the PVC An unused VPI VCI pair must be chosen for each host PV...

Страница 65: ...P reply is not received the revalidation fails the PVC is marked invalid as shown through atmarp a and communication over the PVC is no longer possible Once a PVC is marked invalid an attempt is made...

Страница 66: ...successfully registered its address with the network For the switch AMI com mand configuration atmarp getnsap interface provides the same information On the host atmarp g displays the ATM address of...

Страница 67: ...and switches in the network to have support for both ILMI and for RFC 1577 Classical IP over ATM However when using non Cabletron equipment this may not be the case This section will describe how to c...

Страница 68: ...ost that is the ARP server and on all of the other equipment 2 Using the configuration software of the third party host assign that host an NSAP address that has the same prefix as the switch fabric t...

Страница 69: ...Let ILMI dynamically per form address registration for all of the hosts 2 Configure a static NSAP route to the third party switch on Cabletron switch B that is physically connected to the third party...

Страница 70: ...namically perform address registration for all of the FORE hosts and Cabletron switches 2 Statically configure the non FORE hosts with NSAP addresses edit the firmware download script using the same s...

Страница 71: ...assical IP ATM Network 4 Configure two static NSAP routes on the third party switch one to each of the Cabletron switches to which the third party switch is connected using the third party vendor s co...

Страница 72: ...2 22 Configuring a Classical IP ATM Network...

Страница 73: ...nt software release supports emulation of Ethernet IEEE 802 3 LANs only Each ELAN is composed of a set of LAN Emulation Clients LECs a LAN Emulation Configuration Server LECS a LAN Emulation Server LE...

Страница 74: ...h while the LES and BUS reside in a workstation In the current 4 0 software the LECS LES and BUS are sup ported only for switches and for SunOS The functional interconnections of a simple ELAN consist...

Страница 75: ...ol coordination function for the ELAN The LES provides the service of registering and resolving MAC addresses to ATM addresses A LEC registers its own address with the LES A LEC also queries the LES w...

Страница 76: ...be maintained for the duration of the LEC s participation in the ELAN Control Distribute Connection a unidirectional point to multipoint VCC set up by the LES to the LEC This connection must be main...

Страница 77: ...3 5 Configuring an Emulated LAN Figure 3 2 ELAN Operation CONFIGURATION DIRECT CONTROL DIRECT CONTROL DISTRIBUTE MULTICAST SEND MULTICAST FORWARD DATA DIRECT LECS LES BUS LEC1 LEC2 engineering...

Страница 78: ...and maintained by the network administrator NOTE Detailed information about the LECS configuration file may be found in Section 3 4 1 3 3 2 Registration and Address Resolution After obtaining the add...

Страница 79: ...LEC2 This path will be used for subsequent data transfers Before LEC1 begins to use this connection it first sends a flush packet via the BUS to the destination LEC2 When LEC2 acknowl edges receipt of...

Страница 80: ...the system administrator should follow in order to configure and maintain ELANs 1 Configure an LECS configuration database file 2 Start the LAN Emulation Services LECS LES and BUS 3 Start the LEC s an...

Страница 81: ...n a given ELAN the ATM addresses for all LESs in that ELAN s failover sequence must be included Provide the address of each LEC that may participate in each ELAN If you wish LECs to use a default ELAN...

Страница 82: ...eld is used to denote an individual parameter within a group The value field contains the value assigned to the key Omitting the group implies that the key and value apply to all groups in the configu...

Страница 83: ...nd VCC_TimeOut_Period 1200 Specifies the length of time that an idle data connection remains open before being closed Default value is 1200 seconds Maximum_Retry_Count 1 Limits the number of LE_ARP re...

Страница 84: ...s 47000580ffe1000000f21a01b90020480605b221 marketing 1 Address 47000580ffe1000000f21a01b90020480605b223 marketing 2 Address 47000580ffe1000000f21a01b90020480605b225 In this example redundant LES addre...

Страница 85: ...orter but only allows for masks whose semi octets are all ones or all zeros while the former allows for arbitrary masks A prospective client address is captured by an ELAN name if the client s address...

Страница 86: ...perhaps giving the name of its ELAN as the value of the LAN_Name key For example 47000580FFE10000000000000000204822222222 LAN_Name engineering 002048ABCDEF LAN_Name marketing Configuration parameter...

Страница 87: ...e an idle Configura tion Direct VCC is automatically closed by the LECS enter a statement simi lar to the following LECS VCC_TimeOut_Period 1200 The LECS periodically checks whether its configuration...

Страница 88: ...ng statement specifies the ELAN names in the order that prospective clients will attempt to join Note that redundant marketing ELANs have been included This allows clients attempting to join the mar k...

Страница 89: ...identified as acceptable clients for the engineering and marketing ELANs Figure 3 3 Sample LECS Configuration File Part One of Two The search ordering of elan names Match Ordering default engineering...

Страница 90: ...m_Frame_Size 4544 Parameters for elan marketing 0 marketing 0 Address 47 0005 80 ffe100 0000 f21a 01b9 0020480605b2 21 marketing 0 Accept 002048080011 0020481020ef Parameters for elan marketing 1 mark...

Страница 91: ...f the supplied LECS configuration file and work with the copy This sample LECS configuration file contains the minimum information needed to start a default ELAN that all clients can join You MUST rep...

Страница 92: ...changing the selector byte This mod ified address is the same address that is used when starting the default LES 2 Substitute the address determined in step 1 for the string of 4 s in the default Add...

Страница 93: ...using the following AMI command configuration lane lecs get host remotefile localfile For example you would enter something similar to the following configuration lane lecs get 198 29 22 46 lecs cfg N...

Страница 94: ...The OperStatus field should display up meaning that the LECS is enabled Because the default option has not been specified the Default LES field is all zeros If you use the default option then that LE...

Страница 95: ...r byte HEX BUS ATM address LES name colocated_bus For example you would enter something similar to the following conf lane les new a b default colocated_bus NOTE By using the colocated_bus option you...

Страница 96: ...LEC that will attempt to join the ELAN use the following AMI com mand conf lane lec new LEC Selector byte HEX ELAN name automatic manual manual mode options lecs LECS address or les LES address NOTE...

Страница 97: ...LEC you can verify that the LEC has joined the ELAN by using the following AMI command configuration lane lec show Admin Oper Index Status Status Sel Mode MACaddress IfName ELAN 1 up up 0x00 automati...

Страница 98: ...and then configuration lane lec new ac marketing 2 The above commands start three LECs Initially the LEC that connects to ELAN marketing 0 services is the active LEC If marketing 0 services fail the L...

Страница 99: ...or 4 1 1 Transmit Indicators The LED corresponding to the transmit line of the port has the following meanings depending on its color off Indicates that there are currently no cells being transmitted...

Страница 100: ...two modes of operation that the SONET ports support sonet and sdh These modes of operation affect the significance of the header bits in the SONET frames The default mode of operation is sonet CAUTION...

Страница 101: ...the switch control software starts on that particular SCP 4 3 Configuring SONET Empty Cells To change the type of cells sent as empty cells filler that is sent when a port is not sending data on a SON...

Страница 102: ...ric then this option is disabled After the loopback mode is modified on a SONET port the SCP immediately puts that change into effect on that switch fabric At the same time that infor mation is entere...

Страница 103: ...4 5 SONET Configuration Figure 4 1 SONET Single Port Loopback Diagram Ser Par Par Ser TX Section RX Section To Network From Network Line Diagnostic...

Страница 104: ...dule statistics statistics sonet sonet Port 1A1 Counter Value Delta sonetSectionBIPs 383833630 1584162 sonetSectionLOSs 22103 99 sonetSectionLOFs 23991 99 sonetLineBIPs 532 0 sonetLineFEBEs 355 0 sone...

Страница 105: ...out of frame OOF condition persists for 3ms The LOF is cleared when an in frame condition persists for 3ms While in frame the framing bytes A1 A2 in each frame are compared against the expected patter...

Страница 106: ...BIP 8 byte B3 extracted from the current frame to the path BIP 8 computed for the previous frame sonetPathFEBEs The number of path Far End Block Errors FEBE that have been detected since the last tim...

Страница 107: ...used to alert upstream terminals of a downstream failure in order to ini tiate trunk conditioning on the failure circuit sonetAtmCorrectable HCSs The number of correctable Header Check Sequence HCS er...

Страница 108: ...ng parameters configuration port sonet timing port network internal The port variable indicates the SONET port that is to be modified and the network internal variable designates the source of the tra...

Страница 109: ...tate of the port depending on their color 5 1 1 Transmit Indicators The LED corresponding to the transmit line of the port has the following meaning depending on its color off Indicates that there are...

Страница 110: ...port ds3 mode port plcp hcs The port variable indicates the DS 3 port that is to be modified and the plcp hcs variable is the mode of operation to be used for the port It is crit ical that both ends...

Страница 111: ...se file so that the change will be put into effect every time the switch control software starts on that particu lar SCP 5 4 Configuring DS 3 Line Length To change the line length of a DS 3 port to co...

Страница 112: ...variable indicates the DS 3 port that is to be modified and the cchannel cbit variable is the type of framing for the port The default set ting is cbit cbitparity If there are no DS 3 ports on the swi...

Страница 113: ...DS 3 connection as well so that the data is properly unscrambled By default scrambling is disabled To enable or disable scrambling on a DS 3 port log in to AMI and enter the following parameters conf...

Страница 114: ...none variable indicates the type of loopback to be used on the specified port The default loopback setting is none which means that no loopback will take place on that port If there are no DS 3 ports...

Страница 115: ...is retransmitted to the network 5 7 3 Diagnostic Loopback This connects the receiver to the transmitter The DS 3 stream transmitted by the switch to a port is looped back to the switch The DS 3 stream...

Страница 116: ...amingAISs 0 0 ds3FramingPbitPERRs 1713276195 0 ds3FramingCbitPERRs 1583241699 0 ds3FramingFEBEs 976095339 0 ds3PlcpFERRs 956136 0 ds3PlcpLOFs 0 0 ds3PlcpBIP8s 252419904 0 ds3PlcpFEBEs 603317432 0 ds3P...

Страница 117: ...s3FramingFERFs Shows the number of seconds in which Far End Receive Failure FERF state has been detected by the DS3 Receive Framer block The FERF sig nal alerts the upstream terminal that a failure ha...

Страница 118: ...he second bit provides even parity over the second bits of all N bit sequences within the specified portion etc ds3PlcpFEBEs Indicates the number of ATM Far End Block Error FEBE events ds3PlcpYellows...

Страница 119: ...meters at the prompt to change the clocking source configuration port ds3 timing port network internal The port variable indicates the DS 3 port that is to be modified and the network internal variabl...

Страница 120: ...5 12 DS 3 Configuration...

Страница 121: ...or 6 1 1 Transmit Indicators The LED corresponding to the transmit line of the port has the following meaning depending on its color off Indicates that there are currently no cells being transmitted f...

Страница 122: ...bric then this option is disabled After the E 3 mode configuration is changed the switch control processor SCP immediately puts that change into effect on that switch fabric At the same time that info...

Страница 123: ...o facilitate testing of the E 3 ports there are four different loopback configu rations available cell payload diagnostic and line When an E 3 port is in loopback mode it no longer passes normal traff...

Страница 124: ...4 3 Diagnostic Loopback This connects the receiver to the transmitter The E 3 stream transmitted by the SCP to a port are looped back to the SCP The E 3 stream is still transmit ted to the network bu...

Страница 125: ...igned variable indicates the type of cells that the specified port sends as filler when the port is not sending data The default setting is unas signed If there are no E 3 ports on the switch then thi...

Страница 126: ...3FramingFERFs 0 0 e3FramingAISs 0 0 e3FramingBIP8s 636877586 0 e3FramingFEBEs 2465566 0 e3PlcpFERRs 0 0 e3PlcpLOFs 171950 0 e3PlcpBIP8s 0 0 e3PlcpFEBEs 0 0 e3PlcpYellows 0 0 e3AtmHCSs 0 0 e3AtmRxCells...

Страница 127: ...ured with PLCP framing e3FramingAISs Specifies the number of seconds in which Alarm Indication Signals AIS were detected by the E3 Receive Framer block AIS indicates that an upstream failure has been...

Страница 128: ...number of ATM Far End Block Error FEBE events e3PlcpYellows Shows the number of seconds in which Yellow alarm errors were detected by the PLCP Physical Layer Convergence Protocol receiver Yellow alarm...

Страница 129: ...uration port e3 timing port network internal The port variable indicates the E 3 port that is to be modified and the net work internal variable designates the source of the transmit clock For all netw...

Страница 130: ...6 10 E 3 Configuration...

Страница 131: ...corresponding to the transmit line of the port has the following meaning depending on its color off Indicates that there are currently no cells being transmitted from the port green Indicates that a c...

Страница 132: ...type of loopback on the port The default loopback setting is none which means that no loopback will take place on that port If there are no TP25 ports on the switch then this option is disabled After...

Страница 133: ...7 3 TP25 Configuration Figure 7 1 TP25 Single Port Loopback Diagram XFRMR PMD TC Layer Switch Fabric Cell Buffer Network LINE...

Страница 134: ...p25AtmHCSs 8 0 tp25AtmRxCells 13722 0 tp25AtmTxCells 0 0 Press return for more q to quit q 7 4 TP25 Error Counter Descriptions tp25ErrorSymbols Lists the number of undefined symbols received tp25AtmHC...

Страница 135: ...orresponding to the transmit line of the port has the following meaning depending on its color off Indicates that there are currently no cells being transmitted from the port green Indicates that a ce...

Страница 136: ...The port variable indicates the TAXI port that is to be modified and the diag none variable indicates the type of loopback to be used on the speci fied port The default loopback setting is none which...

Страница 137: ...how to open or close an AMI session and how to perform other AMI root level commands AMI allows the user to configure and to make statistical queries of various hardware and software aspects of Cable...

Страница 138: ...ons All AMI output including user prompts is shown in courier font All user input e g sub commands is shown in avant garde font Each submenu is described in a separate section Commands that are submen...

Страница 139: ...splayed for the switch name this means that no host name has been assigned yet At the login prompt if a password has been assigned to the switch the user should type asx ENTER and then type the passwo...

Страница 140: ...that has been assigned to this SCP If ATM SWITCH is displayed for the switch name this means that no host name has been assigned yet Only one user may open an AMI session on an SCP at a time The user...

Страница 141: ...go up one menu level top to go to the root menu exit to leave AMI Opening a session for 127 0 0 1 please wait Connected to 127 0 0 1 asx200bx localhost If another user already has an AMI session open...

Страница 142: ...some AMI commands that will not work on shark The following is a list of the commands that are not available when running a remote AMI session and the applicable switch platforms For the 9A000 SFCS 2...

Страница 143: ...ands to get list of commands at the current level up to go up one menu level top to go to the root menu exit to leave AMI Opening a session for localhost please wait Connected to localhost asx200bx lo...

Страница 144: ...host about ATM Management Interface v4 0 Copyright c 1994 1995 FORE Systems Inc All Rights Reserved AMI uses SNMP to manage FORE Systems ATM switches AMI is platform independent and runs on hosts and...

Страница 145: ...on that is still open For example if you opened a session on switch1 and on switch2 from your local SCP and you wanted to close the session on switch2 you would be sent back to the last open session w...

Страница 146: ...any submenu level a list of available commands at the cur rent level and a short description of each command is shown By typing help at the root level the following commands and descriptions are shown...

Страница 147: ...g history at any prompt the user can list up to the last 20 previously typed commands for that particular session as follows localhost history 1 open fishtank 2 stat 3 4 module 5 oc3 6 port 7 spans 8...

Страница 148: ...fault SNMP community string is public you must use the private SNMP community string if you wish to make any changes on the remote SCP e g if you want to create an SPVC to that SCP For example to log...

Страница 149: ...reachable by sending it an ICMP echo request and waiting for a response The user can access this command by entering ping at the root level Enter the following parameters localhost ping IP address IP...

Страница 150: ...nter redo with no additional parameters as follows localhost redo To repeat a command given within the last 20 commands in the same open session enter the following parameters localhost redo command n...

Страница 151: ...spans 8 tcp 9 udp 10 vcc 11 help 12 history Then to repeat a previously given command type redo and the command number at the prompt For example to repeat command number 8 which is listing statistics...

Страница 152: ...ftware features of the switch and the network modules The statistics commands are described in Appendix D of this manual A 3 13 Top Command By entering top at any level the user is sent to the root le...

Страница 153: ...at the root level displays the configuration commands as fol lows localhost configuration alarms atmarp board ip lane module nsap port rs232 snmp spans spvc switch system topology uni30 upc vcc vpc E...

Страница 154: ...active enabled disabled spansFailed inactive enabled disabled Major alarm relay status off Minor alarm relay status off The fields in this display have the following meanings AlarmType Displays the na...

Страница 155: ...nor alarm when that condition occurs alarm type Indicates the kind of alarm condition Valid parame ters are displayed in the AlarmType field when the command string configuration alarms show is entere...

Страница 156: ...ms show is entered at the prompt For example to disable a link failure as a minor alarm enter the following parameters localhost configuration alarms disable minor linkFailed To verify that the change...

Страница 157: ...ans all Indicates that both the linkFailed and the spansFailed alarms will be reset For example to reset the linkFailed alarm enter the following parameters localhost configuration alarms reset link A...

Страница 158: ...entering arpserver at the configuration level By entering arpserver at this level the list of available subcommands for arpserver is displayed localhost configuration atmarp arpserver show set B 2 1...

Страница 159: ...aa3 The default is qaa0 The switch itself can be used as an ARP server To do this set the ARP server address to be the NSAP address of the switch s control port B 2 2 Deleting an ARP Entry This comman...

Страница 160: ...ddress of a Classical IP interface Enter the following parameters localhost configuration atmarp getnsap interface qaa0 NSAP address 47000580ffe1000000f12400de0020481900de00 interface Indicates the na...

Страница 161: ...he name of the Classical IP interface to be used for this connection The default is qaa0 B 2 7 Creating a FORE IP PVC ARP Entry This command enables the user to create a FORE IP PVC ARP entry Data on...

Страница 162: ...000 f21b 0138 002048102754 00 198 29 17 10 qaa0 0x47 0005 80 ffe100 0000 f21b 0137 002048100be6 00 198 29 17 15 qaa0 0x47 0005 80 ffe100 0000 f21b 0137 00204810048d 00 198 29 17 52 qaa0 0x47 0005 80 f...

Страница 163: ...is 0 838 seconds However the burst tol erance of some VBR connections is larger than 0 838 seconds so they can not be correctly policed by the switch To accommodate these cases it is possible to scale...

Страница 164: ...Displays what type of board this is S N Indicates the serial number NMs Shows the number of installed network modules VPIerrors Lists the VPI lookup error cells arriving at the switch on an unknown V...

Страница 165: ...198 29 22 46 1544 0 The fields in this display are defined as follows B Indicates the number of the board switch fabric Source Lists the source SPANS address of the link IpAddress Shows the IP address...

Страница 166: ...low IP access to the switch which in turn enables SNMP access By setting the IP address of the asx0 interface or one of the qaa interfaces in band over ATM access to the switch control processor SCP i...

Страница 167: ...of the designated interface to down NOTE The switch s localhost interface lo0 must always be up to allow AMI to run on the switch B 4 3 Configuring the IP Broadcast Address This command allows the us...

Страница 168: ...r the following parameters localhost configuration ip forwarding on off on off Using on turns IP forwarding on Using off turns IP forwarding off B 4 5 Configuring the IP Subnet Mask This command allow...

Страница 169: ...way metric host net default This parameter must be specified to create a default route destination ipaddress Indicates the destination IP network number gateway Indicates the gateway address to the de...

Страница 170: ...eway Metric Interface Flags default 169 144 48 1 1 le0 G 169 144 48 0 169 144 48 21 0 le0 169 144 60 0 169 144 60 21 0 asx0 169 144 64 0 169 144 64 21 0 qaa0 169 144 200 0 169 144 200 21 0 el0 169 144...

Страница 171: ...up 169 144 206 21 255 255 255 0 169 144 206 0 IP Forwarding State forwarding The fields in this display are defined as follows interface Indicates the name of the IP interface state Lists the adminis...

Страница 172: ...alhost configuration lane bus admin delete new show B 5 1 1 Configuring the BUS Administrative Status This command lets the user change the administrative status of a BUS to up start a BUS service or...

Страница 173: ...e found under the Index field when you enter the conf lane bus show command B 5 1 3 Creating a BUS This command lets the user create a BUS for an ELAN Enter the following parameters localhost configur...

Страница 174: ...tatus of the BUS Up means the user started the BUS Down means the user stopped the BUS OperStatus Reflects the actual current status of the BUS Up means the BUS is currently active Down means the BUS...

Страница 175: ...index For example to display information about the BUS with an index number of 1 enter the following parameters localhost configuration lane bus show 1 localhost configuration lane bus show Index Admi...

Страница 176: ...calhost configuration lane lec admin LEC index up down LEC index Indicates the unique positive integer index of the LEC that is dynamically assigned by AMI when a LEC is created to identify this LEC f...

Страница 177: ...r each LEC is stored here Enter the fol lowing parameters localhost configuration lane lec arp show advanced By entering show without the advanced option the basic LANE ARP cache information is displa...

Страница 178: ...t is to be deleted This number is dynamically assigned by the switch when a LEC is created and can be found under the Index field when you enter the conf lane lec show command B 5 2 4 LEC Default Conf...

Страница 179: ...nual means that the LECS address speci fied here is used as the LECS address Using auto matic means that the well known LECS address 47 0079 00 000000 0000 0000 0000 00A03E00000 1 00 as defined by the...

Страница 180: ...default ELAN LEC Selector byte HEX Indicates the 20th byte of the ATM address of the LEC entered in hexadecimal format Use the conf atmarp getnsap command to display the entire ATM address ELAN name I...

Страница 181: ...FAILOVER sw net 0 LECS 0x47 0079 00 000000 0000 0000 0000 00a03e000001 00 LES 0x47 0005 80 ffe100 0000 f215 096b 00204815096b a0 5 up joining 0x04 automatic 0a204815096b el1 sw net 1 LECS 0x47 0079 0...

Страница 182: ...the OperStatus field Therefore it is possible for the information above to show the AdminStatus as up but the OperStatus as down If you show the information again after two or three seconds the change...

Страница 183: ...ex of the LECS that is dynamically assigned by AMI when a LECS is created to identify this service from any other service in the same class The index can be found under the Index field when you enter...

Страница 184: ...conf atmarp get nsap command to display the entire ATM address db LECS database file Indicates the full path to the location and name of the LECS database file The default file for a 9A000 SFCS 200BX...

Страница 185: ...hen the LECS is created AdminStatus Reflects any changes that the user has made to the status of the LECS Up means the user started the LECS Down means the user stopped the LECS OperStatus Reflects th...

Страница 186: ...nd will be reflected here To display information about a particular LECS that is currently configured on the switch enter the following parameters localhost configuration lane lecs show LECS index For...

Страница 187: ...e LECS database file is to be retrieved remotefile Indicates the name of the LECS database file that is to be retrieved localfile Indicates the name of the file where the retrieved LECS database file...

Страница 188: ...x of the LES that is dynamically assigned by AMI when a LES is created to identify this service from any other service in the same class The index can be found under the Index field when you enter the...

Страница 189: ...ocated BUS then you only need to enter the BUS selector byte instead of the full address If the BUS is running on a different switch you must enter the full address Use the conf atmarp getnsap command...

Страница 190: ...is created AdminStatus Reflects any changes that the user has made to the status of the LES Up means the user started the LES Down means the user stopped the LES OperStatus Reflects the actual current...

Страница 191: ...enter the following parameters localhost configuration lane les show advanced ELAN Name eng net LES 47 0005 80 ffe100 0000 f21a 00d0 0020481a00d0 0a BUS 47 0005 80 ffe100 0000 f21a 00d0 0020481a00d0 0...

Страница 192: ...02 non proxy 06 20 48 10 13 f6 47 0005 80 ffe100 0000 f215 096b 0020481013f6 02 Control Direct VCC 0 145 The fields in this display are defined as follows ELAN Name Shows the names of any ELANs associ...

Страница 193: ...005 80 ffe100 0000 f21a 00d0 002048102a78 02 non proxy 06 20 48 10 2a 78 47 0005 80 ffe100 0000 f21a 00d0 002048102a78 02 Control Direct VCC 0 76 LEC 4 at 47 0005 80 ffe100 0000 f21a 00d0 0020481a00d0...

Страница 194: ...1 The fields in this display are defined as follows Module Shows each network module that is currently in the switch board The 4 means that it is the switch fabric in slot 4 B indicates the position...

Страница 195: ...work Module Timing Source This command allows the user to display information about the timing source of the network modules NOTE These commands apply only to FORE Systems Series C network modules tha...

Страница 196: ...port Primary Defines the preferred export timing source for the specified network module This clock source may be either recovered from one of the ports on this net work module or this clock source ma...

Страница 197: ...ng support Enter the following parameters localhost configuration module timing internalclock module export import module Indicates the specific distributed timing network module to be configured expo...

Страница 198: ...s network module in the event that the primary source is unavailable mod port crystal none Specifies the source of the export clock for this net work module Using mod port means that the tim ing sourc...

Страница 199: ...e timing importclock module primary secondary A B C D module Indicates the specific distributed timing network module to be configured primary secondary Using primary designates this as the preferred...

Страница 200: ...ule This command lets the user set a threshold value for AAL5 Early Packet Dis card EPD on a specified network module This is the static threshold in terms of a specified number of cells at which EPD...

Страница 201: ...g memory default 3 11264 1024 4096 10240 big memory more connections 4 6144 4096 8192 8192 big memory more multicast 5 2048 2048 32768 8192 big memory VP traffic shaping 6 3072 128 1024 13312 big memo...

Страница 202: ...es only Enter the following parameters localhost configuration module traffic setmodel module model module Indicates which network module is to be configured model Indicates the predefined memory mode...

Страница 203: ...ndicates the position of the network module in the switch fabric Model Indicates the memory model used for this network module Unicasts Displays the current number of active unicast con nections on th...

Страница 204: ...to FORE Systems Series C network modules only Enter the following parameters localhost configuration module traffic fifoblock module normal enabled module Indicates which network module is to be conf...

Страница 205: ...available subcommands by typing route at the nsap level localhost configuration nsap route delete new show B 7 1 1 Deleting an NSAP Route This command enables the user to remove an existing NSAP stat...

Страница 206: ...There is a cost for each link in a route The sum of these link costs determines the overall cost of a route To expe dite traffic on a route the user should try to mini mize the overall cost of a route...

Страница 207: ...0ffe1000000f21511f200204810046400 152 1C2 0 200 20 0 30 0 A 47000580ffe1000000f21511f20020481ee00000 144 1C3 0 100 70 0 60 0 AE 47000580ffe1000000f21511f20020481ff00000 144 1C1 0 100 INF INF AE 470005...

Страница 208: ...he capacity available on the outgoing link VBR Displays the maximum VBR capacity allowed for any single connection on this route INF means that user did not specify a value for this parameter when the...

Страница 209: ...is to be deleted prefix Indicates the NSAP prefix for this entry B 7 2 2 Creating an NSAP Prefix This command lets the user create an NSAP prefix Enter the following parameters localhost config nsap...

Страница 210: ...x47 0005 80 ffe100 0000 f124 00de 1B6 0 0x47 0005 80 ffe100 0000 f124 00de 1CTL 0 0x47 0005 80 ffe100 0000 f124 00de The fields in this display have the following meanings Port Indicates the port numb...

Страница 211: ...VCI 16 The user can display the available subcommand by typing ilmi at the nsap level localhost configuration nsap ilmi show B 7 3 1 Displaying NSAP Addresses Registered through ILMI This command enab...

Страница 212: ...ost configuration port cdvt e1 e3 ds1 tp25 ds3 j2 policing sonet show taxi traffic vbrob vbrbuffob B 8 1 CDVT Port Configuration Commands This command lets the user modify the input Cell Delay Variati...

Страница 213: ...twork modules that are synchro nous in nature can keep an even flow of traffic moving so that distributed tim ing can work properly This command lets the user change the type of cells sent as empty ce...

Страница 214: ...rk payload Selecting payload loopback indicates that the E 3 stream received from the network has the E 3 over head bits re inserted and is retransmitted to the net work diag Choosing diagnostic loopb...

Страница 215: ...s HCS Header Check Sequence based framing G 832 for cell delineation The default is hcs B 8 2 4 Configuring E 3 Port Scrambling This subcommand allows the user to change the scrambling mode on a port...

Страница 216: ...t it is the first switch fabric The letter D means that the E 3 network module is installed in the bot tom right hand slot in the switch The 1 2 3 4 spec ify the port number on the network module Carr...

Страница 217: ...e ATM Forum 3 0 Specification for more information Idle invalid cell pattern and unassigned unassigned The default is unas signed In general it is not necessary to change this variable from the defaul...

Страница 218: ...n port tp25 loopback show B 8 3 1 Configuring the TP25 Port Loopback This subcommand allows the user to designate the type of loopback on a port on a TP25 network module Enter the following parameters...

Страница 219: ...hows whether or not a carrier has been detected on the port If a carrier has been detected yes is dis played If a carrier has not been detected no is dis played A carrier is detected when a signal is...

Страница 220: ...modules that are synchro nous in nature can keep an even flow of traffic moving so that distributed tim ing can work properly This command lets the user change the type of cells sent as empty cells on...

Страница 221: ...port Indicates the port number on which the loopback mode is to be changed cell Choosing cell loopback means that the DS 3 stream received from the network is unframed into ATM cells The cells are re...

Страница 222: ...Check Sequence based framing for cell delineation The default is hcs B 8 4 5 Configuring the DS 3 Port Scrambling This command allows the user to change the scrambling mode on a port on the DS 3 netwo...

Страница 223: ...tes the DS 3 line status of the port Mode Plcp means the port uses PLCP Physical Layer Con vergence Protocol framing for cell delineation Hcs means the port uses HCS Header Check Sequence based framin...

Страница 224: ...transmit clock For all network modules network means that the timing for this port is derived externally from the incoming clock on this port Internal means that the timing is derived from either the...

Страница 225: ...iming B 8 5 1 Configuring J 2 Port Line Length This command enables the user to change the line length of a J 2 network module port Enter the following parameters localhost configuration port j2 line...

Страница 226: ...ng line loopback connects the transmitter to the receiver The data stream received from the line is retransmitted out to the line Cells that are switched to this port are not sent over the line diag C...

Страница 227: ...e length of the physical cable that is attached to this port Can be short or long Loopback Indicates the loopback mode of this port Can be one of the following none line or diagnostic ClockSource For...

Страница 228: ...r or is set to be derived from a specific port number on a Series C network module that is defined by the user If set to a specific port number the transmit clock is derived from that port if availabl...

Страница 229: ...s filler or place holders when there is no real data to send By sending these cells network modules that are synchro nous in nature can keep an even flow of traffic moving so that distributed tim ing...

Страница 230: ...that are switched to this port are not sent over the fiber diag Choosing diagnostic loopback connects the receiver to the transmitter The SONET stream transmitted by the fiber to a port is looped bac...

Страница 231: ...m left hand slot in the switch fabric The 1 2 3 4 indicate the specific port number on the net work module Width Indicates the type of the SONET path sts3c is 155 52 Mbps and sts12c is 622 08 Mbps The...

Страница 232: ...If set to a specific port number the transmit clock is derived from that port if available If the port source becomes unavailable the on board crystal takes over as the transmit clock source Scramblin...

Страница 233: ...twork internal port Indicates the port number from which the timing is being derived network internal Designates the source of the transmit clock For all network modules network means that the timing...

Страница 234: ...this display are defined as follows Port Indicates the port number of the network modules that are currently installed in the switch fabric CTL indicates the control port which is a logical not physi...

Страница 235: ...00 1D2 250 enabled 100 100 1D3 250 enabled 100 100 1D4 250 enabled 100 100 1CTL 5000 enabled 100 100 The fields in this display are defined as follows Port Indicates the port number of the network mod...

Страница 236: ...t configuration port show 1C1 Port Carrier Mb s iVPs iVCs iBW oVPs oVCs oBw Model 1C1 no 155 0 1 4 155 0 1 4 155 0 OC3 The fields in this display are defined in the same manner as those listed previ o...

Страница 237: ...show B 8 9 1 Configuring TAXI Port Loopback This command allows the user to designate the type of loopback on a port on a TAXI network module Enter the following parameters localhost configuration po...

Страница 238: ...indicates that the TAXI network module is installed in the bottom right hand slot in the switch fabric The 1 2 3 4 5 6 refer to the specific port number on the network module Carrier Shows whether or...

Страница 239: ...cells by default multi plied by 1 cell time plus the CBR CDV The CDV also varies depending on the physical interface on which the link is running e g a 155 Mbps connection versus a 45 Mbps connection...

Страница 240: ...hresh old is surpassed EFCI continues to be set until the queue empties NOTE This command applies to FORE Systems Series C network modules only Enter the following parameters localhost configuration p...

Страница 241: ...wing parameters localhost configuration port traffic qsize port CBR VBR ABR number of cells port Indicates the port on which the dedicated queue size will be set CBR VBR ABR Indicates for which type o...

Страница 242: ...0 4A3 256 700 256 1400 256 64 0 4A4 256 700 256 1400 256 64 0 Port priority queues CLP Qsize Qsize Port Priority Threshold Dedicated Current TxCells LostCells 4A1 ABR UBR 256 256 0 110957 0 4A1 VBR 25...

Страница 243: ...ABR and UBR traffic The fields in the port priority queues display are defined as follows Port Shows the port that has been configured The 4 indi cates the fourth switch fabric the letter indicates t...

Страница 244: ...ion port traffic show 4A4 Port configuration CBR VBR ABR UBR Port Qsize CDV Qsize CDV Qsize EFCI ON EFCI OFF 4A4 256 700 256 1400 256 64 0 Port priority queues CLP Qsize Qsize Port Priority Threshold...

Страница 245: ...no overbooking will occur Values less than 100 cause underbooking Values greater than 100 denote overbooking B 8 12 VBRBuffOB Port Configuration Commands This command is an advanced option that allows...

Страница 246: ...ort Enter the following parameters localhost configuration rs232 show A B A B Indicates the port letter of the serial port that is to be displayed localhost configuration rs232 show Port Type Speed Fl...

Страница 247: ...uration snmp community read write community read write Indicates the access level for this community If set to read the AMI session opens with read only access If set to write the AMI session opens wi...

Страница 248: ...t configuration snmp trap delete trap trap Indicates the number of the trap destination in the list of current SNMP traps that is to be removed For example to delete trap 198 29 31 130 first list the...

Страница 249: ...following parameters localhost configuration snmp trap new ipaddress ipaddress Indicates the IP address of the trap destination to be created B 10 2 2 1 Displaying the SNMP Trap Entries This command e...

Страница 250: ...available subcommands by typing spans at the configuration level localhost configuration spans delete new show B 11 1 Deleting a SPANS Signalling Path This command lets the user delete an existing SPA...

Страница 251: ...ng path is to be created vpi Indicates the number of the SPANS path that is to be created cdvt cdvt Indicates the Cell Delay Variation Tolerance CDVT associated with the peak cell rates in microsecond...

Страница 252: ...If no index is specified then no traffic polic ing will take place on this VCI It is assigned a UPC index of 0 and all traffic on this VCI is treated as UBR traffic This is the default minvci vci Indi...

Страница 253: ...10 48 The fields in this display have the following meanings Port Lists the port number of the SPANS signalling path VPI Shows the path number of the SPANS signalling path State Shows the current stat...

Страница 254: ...owing meanings Port Lists the port number of the SPANS signalling path VPI Shows the path number of the SPANS signalling path SigVCI Indicates the virtual channel number used for SPANS messages on the...

Страница 255: ...calhost configuration spans show 1c1 0 Port VPI State Type CDVT Action RemoteAddress 1C1 0 down uni 250 tag The fields in this display are defined in the same manner as those listed previ ously in the...

Страница 256: ...elete an existing SPVC There are two dif ferent ways to delete an SPVC Enter the following parameters localhost configuration spvc delete Local SPVC ID source destination bidirectional or localhost co...

Страница 257: ...oing from the remote switch fabric to the local switch fabric Bidi rectional means the pair of unidirectional SPVCs will be deleted The default is bidirectional B 12 2 Creating an SPVC This command al...

Страница 258: ...er specify bidirectional or you must set up two unidirectional SPVCs with one going in each direction To create an SPVC you need to configure the two ends concurrently on the two switch fabrics Theref...

Страница 259: ...when the SPVC was created Local Port Indicates the port number on the local switch fabric Local VPI Indicates the virtual path number on the local switch fabric Local VCI Indicates the virtual channel...

Страница 260: ...s by typing switch at the configuration level localhost configuration switch name pmpmaxvci pmpminvci show B 13 1 Setting or Changing the Switch Name This command enables the user to set or change the...

Страница 261: ...on this switch fabric PVCs can be created on these VCIs but no point to point connections may use these VCIs NOTE This command is useful only when the switch is running in non extended mode For more i...

Страница 262: ...on this switch fabric PVCs can be created on these VCIs but no point to point connections may use these VCIs NOTE This command is useful only when the switch is running in non extended mode For more...

Страница 263: ...the mini mum and maximum number of reserved VCIs for point to multipoint connections Enter the following parameters Switch fishtank Type asx200bx up 2 days 19 40 Hardware version 1 0 Software version...

Страница 264: ...vity after which an AMI session will time out and display what type of units will be used when designating UPC contracts The user can get to this level by enter ing show at the system level Enter the...

Страница 265: ...og show set delete console B 14 2 1 Displaying the Address of the System Log Host This command allows the user to display the address of the host to which the switch s system messages are logged Enter...

Страница 266: ...hrough local7 The names may be assigned in any order For example to have a host with the address 192 88 243 118 be the recipient of the system log messages and to designate this switch s facility name...

Страница 267: ...ce the host s address has been deleted the switch s system messages are no longer logged until a new host address is set However if a facility has been assigned to the switch that facility assignment...

Страница 268: ...e without any arguments as follows localhost configuration system syslog console If the messages are being sent to the console the following message is shown Syslog console output is currently ON If t...

Страница 269: ...s 5 minutes To con figure the switch so that an AMI session does not time out enter 0 It is displayed as off when you use configuration system show B 14 4 Configuring the Units for UPC Contracts This...

Страница 270: ...t configuration topology forepnni prefix border swmask pgmask hello nsapindication staticupdate maxhop propmult minthresh vcmark show B 15 1 1 Setting the ForeThought PNNI Switch Prefix When using For...

Страница 271: ...at are on the outside edges of all of the peergroups that you have established This command lets the user designate whether or not this switch will act as a ForeThought PNNI border switch Enter the fo...

Страница 272: ...e in a local AMI session to perform this com mand B 15 1 4 Setting the ForeThought PNNI Peergroup Mask A peergroup mask is the length in the number of bits of the peergroup ID of a switch This command...

Страница 273: ...es This command allows the user to select the interval for ForeThought PNNI NSAP indication messages Enter the following parameters localhost configuration topology forepnni nsapindication msec msec I...

Страница 274: ...NSAP router The default value is 20 hops B 15 1 9 Setting the Proportional Multiplier This command enables the user to set the proportional multiplier for the NSAP router The proportional multiplier i...

Страница 275: ...ng NSAP updates entered in kilobits per second The default value is 50 kilobits per second B 15 1 11 Setting a Minimum Virtual Channel Mark When the number of available virtual channels on a path drop...

Страница 276: ...ation topology forepnni show Switch NSAP prefix 0x47 0005 80 ffe100 0000 f215 0df6 Switch Prefix Mask 104 Peer Group Mask 0 Hello Indication Interval 500 msec NSAP Indication Interval 10000 msec Stati...

Страница 277: ...the period of time between transmissions of static route update indication messages in millisec onds Max hop count for NSAP router Displays the maximum number of hops to use when routing a connection...

Страница 278: ...rent SPANS area is considered a border switch A border switch advertises reachability to its area to switches outside of its area but it does not share its area s topology with the other switches You...

Страница 279: ...be in a local AMI session to perform this com mand B 15 2 3 Displaying SPANS NNI Parameters This command let the user display all of the SPANS NNI topology parame ters Enter the following parameters...

Страница 280: ...figu ration level localhost configuration uni30 delete new show B 16 1 Deleting a UNI 3 0 Signalling Path This command allows the user to delete an existing UNI 3 0 signalling path Enter the following...

Страница 281: ...to be created ilmi up down Enables ILMI NSAP registration for this port only when a host is connected The default is up How ever this parameter must be set to down if you set the last parameter to IIS...

Страница 282: ...nalling messages The default is 32 maxvci vci Indicates the top number for the range of VCIs to be reserved for UNI 3 0 signalling messages The default is 511 sigbw Kbps Indicates the amount of bandwi...

Страница 283: ...t is the first switch fabric The letter indi cates the position of the network module in the switch The 1 2 3 4 indicate the specific port num ber CTL indicates the control port which is a logical not...

Страница 284: ...5 16 5 32 511 0 0 The fields in this display have the following meanings Port Indicates the port number of the network modules that are currently installed in the switch The 1 indi cates that it is t...

Страница 285: ...switch fabric To list UNI 3 0 signalling path information for a specific port and path for example port 1C1 and VPI 0 enter the following parameters localhost configuration uni30 show 1c1 0 Port VPI...

Страница 286: ...can display the list of available subcommands by typing upc at the configuration level localhost configuration upc delete new show B 17 1 Deleting a UPC Traffic Contract This command allows the user...

Страница 287: ...ed as follows ubr Indicates UBR traffic cbr Indicates CBR traffic cbr0 Indicates CBR0 traffic vbr Indicates VBR traffic vbr0 Indicates VBR0 traffic pcr0 Indicates the peak cell rate for cells with CLP...

Страница 288: ...icates the user defined name associated with this UPC traffic contract This helps the user remember for what traffic type this specific contract is used If the user does not specify a name a default n...

Страница 289: ...or cells with CLP 0 for this contract MBS0 Shows the maximum burst size for cells with CLP 0 for this contract CDVT Shows the Cell Delay Variation Tolerance CDVT associated with the peak cell rates in...

Страница 290: ...w B 18 1 Deleting a Virtual Channel This command allows the user to delete an existing permanent virtual chan nel Enter the following parameters localhost configuration vcc delete iport ivpi ivci opor...

Страница 291: ...d all traffic on this VCI is treated as UBR traffic This is the default B 18 3 Creating a Virtual Channel This command enables the user to add a new permanent virtual channel Enter the following param...

Страница 292: ...first line in the first pair notice that the output port is 2E4 This is the intra fabric port The 2 means the connection is coming out of the switch board in slot 2 through the intra fabric port The...

Страница 293: ...1C2 0 15 1CTL 0 35 spans 1C2 0 16 1CTL 0 59 uni30 1C3 0 5 1CTL 0 40 uni30 1C3 0 14 1CTL 0 39 0 spans 1C3 0 15 1CTL 0 38 spans 1C3 0 16 1CTL 0 60 uni30 1C4 0 5 1CTL 0 43 uni30 1C4 0 14 1CTL 0 42 0 span...

Страница 294: ...er the following parameters localhost configuration vcc show 1c1 0 Input Output Port VPI VCI Port VPI VCI UPC Protocol 1C1 0 5 1CTL 0 34 uni30 1C1 0 14 1CTL 0 33 0 spans 1C1 0 15 1CTL 0 32 spans 1C1 0...

Страница 295: ...port vpi term orig port Indicates the number of the input port on which the virtual path is to be deleted vpi Indicates the number of the input VPI to be deleted port Used to delete a through path Ind...

Страница 296: ...PC contract on a through path iport Indicates the incoming port number ivpi Indicates the incoming virtual path number oport Indicates the outgoing port number ovpi Indicates the outgoing virtual path...

Страница 297: ...rob percent vbrbuffob percent orig The following parameters make up a through path iport Indicates the incoming port number ivpi Indicates the incoming virtual path number oport Indicates the outgoing...

Страница 298: ...d Kbs Indicates the amount of bandwidth specified in Kbps that the user wants to reserve on this path maxvci maxvci Indicates the maximum number of channels that can be created on this path The follow...

Страница 299: ...nt to shape traffic on more than two ports on a given network module it is recom mended that you set the traffic memory model to model number 5 for that network module Please see the sections Displayi...

Страница 300: ...rst pair notice that the output port is 2E4 This is the intra fabric port The 2 means the connection is coming out of the switch board in slot 2 through the intra fabric port The E represents the intr...

Страница 301: ...inate N A 0 0K 511 4 N A pvc 1CTL 0 terminate N A 0 0K 511 36 N A pvc originate 1A1 0 N A 0 0K 511 4 N A pvc originate 1A2 0 N A 0 0K 511 4 N A pvc originate 1A3 0 N A 0 0K 511 4 N A pvc originate 1A4...

Страница 302: ...rtual paths enter the fol lowing parameters localhost configuration vpc show advanced Input Output Port VPI Port VPI Shape VBROB BuffOB 1A1 0 terminate N A N A N A 1A2 0 terminate N A N A N A 1A3 0 te...

Страница 303: ...verbooking BuffOB Shows the buffer overbooking level assigned to this path specified as a percentage Valid values are inte gers greater than or equal to 1 The default is 100 which means that no overbo...

Страница 304: ...s those listed above in the example for all of the permanent virtual paths on an individual switch fabric To list all of the advanced options about existing permanent virtual paths on a specific port...

Страница 305: ...by a symbol Typing operation at the prompt at the root level displays the operation commands for the i960 based switches as follows localhost operation cdb environment panic date flash password upgra...

Страница 306: ...he CDB Use the touch com mand to do this Then use the chmod command to change the permissions of that file so that it will let the switch write the backup CDB to that file Perform the following steps...

Страница 307: ...rify this action before it re initializes the CDB Enter the following parameters localhost operation cdb init This command will re initialize the CDB and reboot the switch Do you really want to remove...

Страница 308: ...itch while this operation is progressing Are you sure you want to reset the CDB n n localhost operation cdb If the user enters yes to the reset question the switch responds as follows Are you sure you...

Страница 309: ...nt cpu fabric fans power temperature C 2 1 CPU Operation This command lets the user display information about the CPU on a 9A000 SFCS 200WG an SFCS 200BX and an SFCS 1000 Enter the following param ete...

Страница 310: ...even if a fabric has been shut down by the Common Equipment Card CEC because of an over temperature condition Enter the following parameters localhost operation environment fabric show Fabric Deg C St...

Страница 311: ...the thresholds at which a temperature alarm will be tripped and then later reset on an SFCS 1000 Any temperature can cause the switch to display a state of normal or overTemp depending on the trip an...

Страница 312: ...only Enter the following parameters localhost operation environment fans FanBank FanBankState 1 normal 2 normal 3 normal 4 normal FanBank FanBank corresponds to a single fan indicating the number of...

Страница 313: ...te OutputState 1 psAutoRangeAC normal normal 2 psAutoRangeAC normal normal Enter the following parameters to display information for an SFCS 1000 with short AC power supplies localhost operation envir...

Страница 314: ...supply is normal or not S N Indicates the serial number of the power supply Version Lists the power supply s hardware version number C 2 7 Temperature Sensor Operation This command enables the user to...

Страница 315: ...panic commands as follows localhost operation panic clear show C 2 9 Clearing the Panic Flag This command lets the user clear the panic acknowledgment flag without viewing the contents of the panic du...

Страница 316: ...file which contains information about what happened to the SCP when it panicked without clearing the panic flag This information can assist FORE s Technical Support staff in troubleshooting the cause...

Страница 317: ...0039B50 2 00245FE4 3 00230258 4 002414A4 5 00229B04 6 00229930 7 00232E60 8 001111A4 9 00100088 Once the information has been displayed follow the steps listed in the previ ous subsection for clearing...

Страница 318: ...alhost operation date mm dd yyyy hh mm ss hh mm mm dd yyyy Indicates the current date Enter the month the day and the year numerically For example enter 01 11 1996 hh mm ss Indicates the current time...

Страница 319: ...localhost operation flash copy delete dir free get init put rename C 4 1 Copying a File to FLASH Memory This command allows the user to copy a file within the FLASH memory sys tem Enter the following...

Страница 320: ...memory system e g ft343 24 you must first delete all files in that directory For example you would list all directories in your FLASH memory system as follows localhost operation flash dir FT343 24 F...

Страница 321: ...free space in the FLASH memory system Enter the following parameters localhost operation flash free There are 1891974 bytes of flash still available C 4 5 Getting a FLASH File This command lets the us...

Страница 322: ...e FLASH file Enter the following parameters localhost operation flash init Are you sure you want to format the flash n n localhost operation flash C 4 7 Putting a FLASH File on a Remote Host This comm...

Страница 323: ...the action you want to take because you will be prompted for a new pass word immediately If you do not type a long enough password you will be prompted to do so For security reasons your keystrokes ar...

Страница 324: ...server must be configured prop erly For complete instructions about per forming a software upgrade see Chapter 4 Software Upgrade Instructions in the ATM Switch User s Manual The user can get to this...

Страница 325: ...eration version new version new version Indicates the name of the software version with which the user wants to replace the current version NOTE For complete instructions about changing between multip...

Страница 326: ...C 22 AMI Operation Commands...

Страница 327: ...as follows localhost statistics aal0 aal4 aal5 atm board ctlport ds1 ds3 e1 e3 icmp interface ip j2 module port sonet spans tcp tp25 udp uni30 vcc vpc Each of these commands is described in the follo...

Страница 328: ...fields in this display have the following meanings Interface Displays the AAL4 interface XmtCell Lists the number of transmitted cells RcvCell Shows the number of received cells XmtPDU Indicates the n...

Страница 329: ...0 719509 215460 0 0 0 0 The fields in this display have the following meanings Interface Displays the AAL5 interface XmtCell Lists the number of transmitted cells RcvCell Shows the number of received...

Страница 330: ...ields in this display have the following meanings Interface Displays the ATM interface XmtCell Lists the number of transmitted cells RcvCell Shows the number of received cells VPI OOR Indicates the nu...

Страница 331: ...the number of cells that do not match any VPI lookup tables VCI Lookup Errors Displays the number of cells that do not match any VCI lookup tables D 6 Control Port Statistics You can list the control...

Страница 332: ...s 122265891 0 ds3FramingOOFs 59758 0 ds3FramingFERFs 0 0 ds3FramingAISs 0 0 ds3FramingPbitPERRs 1713276195 0 ds3FramingCbitPERRs 1583241699 0 ds3FramingFEBEs 976095339 0 ds3PlcpFERRs 956136 0 ds3PlcpL...

Страница 333: ...eceive Framer block The FERF signal alerts the upstream terminal that a failure has been detected along the downstream line ds3FramingAISs Shows the number of seconds in which Alarm Indi cation Signal...

Страница 334: ...the number of ATM Far End Block Error FEBE events ds3PlcpYellows Shows the number of seconds in which Yellow alarm errors were detected by the PLCP Physical Layer Convergence Protocol receiver The yel...

Страница 335: ...FramingFERRs 85173622 0 e3FramingOOFs 85974 0 e3FramingFERFs 0 0 e3FramingAISs 0 0 e3FramingBIP8s 636877586 0 e3FramingFEBEs 2465566 0 e3PlcpFERRs 0 0 e3PlcpLOFs 171950 0 e3PlcpBIP8s 0 0 e3PlcpFEBEs 0...

Страница 336: ...a port con figured with PLCP framing e3FramingAISs Lists the number of seconds in which Alarm Indica tion Signals AIS were detected by the E3 Receive Framer block AIS indicates that an upstream failu...

Страница 337: ...ys the number of ATM Far End Block Error FEBE events e3PlcpYellows Shows the number of seconds in which Yellow alarm errors were detected by the PLCP Physical Layer Convergence Protocol receiver Yello...

Страница 338: ...armProbs 0 0 icmpInSrcQuenchs 0 0 icmpInRedirects 0 0 icmpInEchos 802 2 icmpInEchoReps 0 0 icmpInTimestamps 0 0 icmpInTimestampReps 0 0 icmpInAddrMasks 0 0 icmpInAddrMaskReps 0 0 icmpOutMsgs 802 2 icm...

Страница 339: ...meter Problem message received icmpInSrcQuenchs Shows the number of ICMP Source Quench mes sages received icmpInRedirects Displays the number of ICMP Redirect messages received icmpInEchos Lists the n...

Страница 340: ...sages sent icmpOutParmProbs Shows the number of ICMP Parameter Problem mes sages sent icmpOutSrcQuenchs Displays the number of ICMP Source Quench mes sages sent icmpOutRedirects Lists the number of I...

Страница 341: ...more q to quit q The fields in this display have the following meanings ifInOctets Indicates the total number of octets received on the interface including framing characters ifInUcastPkts Shows the n...

Страница 342: ...to a subnetwork unicast address including those that were discarded or not sent ifOutNUcastPkts Indicates the total number of packets that higher level protocols requested be transmitted to a non unic...

Страница 343: ...ts 0 0 ipOutDiscards 0 0 ipOutNoRoutes 0 0 ipReasmReqds 0 0 ipReasmOKs 0 0 ipReasmFails 0 0 ipFragOKs 0 0 ipFragFails 0 0 ipFragCreates 0 0 The fields in this display have the following meanings ipInR...

Страница 344: ...nUnknownProtos Displays the number of locally addressed datagrams received successfully but discarded because of an unknown or unsupported protocol ipInDiscards Lists the number of input IP datagrams...

Страница 345: ...ully reassembled ipReasmFails Displays the number of failures detected by the IP reassembly algorithm for whatever reason timed out errors etc This is not necessarily a count of dis carded IP fragment...

Страница 346: ...bled 585 0 0 1B 1 enabled 585 0 0 1C 0 enabled 585 0 0 1C 1 enabled 585 0 0 1D 0 enabled 585 0 0 The following statistics are displayed on an SFCS 1000 only localhost statistics module Module Priority...

Страница 347: ...The 1 means that it is the first switch fabric The letters show the position of the network module in the switch fabric Priority Indicates the priority level for each network module Status Shows wheth...

Страница 348: ...4 0 16121 0 0 1B1 0 0 9040 0 1B2 0 0 9040 0 1B3 0 0 9040 0 1B4 0 0 9040 0 1C1 0 16121 0 0 1C2 0 16121 0 0 1CTL 241397 120581 0 0 The fields in this display have the following meanings Port Indicates t...

Страница 349: ...sonetPathAISs 23991 99 sonetPathYellows 23997 99 sonetAtmCorrectableHCSs 0 0 sonetAtmUncorrectableHCSs 0 0 Press return for more q to quit q The fields in this display have the following meanings son...

Страница 350: ...te that a line layer bit error has occurred sonetLineFEBEs Lists the number of line Far End Block Errors FEBE that have been detected since the last time the port has been reset sonetLineAISs Shows th...

Страница 351: ...and H2 for three consecu tive frames It is cleared when a valid pointer is detected for three consecutive frames AIS indicates that an upstream failure has been detected sonetPathYellows Shows the num...

Страница 352: ...ngs sigPathVCCs Shows the number of VCCs on this signalling path sigPathRestarts Shows the number of times this switch has lost and regained contact with the other side of the connec tion sigPathCalls...

Страница 353: ...ions have made a direct transition to the SYN SENT state from the CLOSED state tcpPassiveOpens Lists the number of times TCP connections have made a direct transition to the SYN RCVD state from the LI...

Страница 354: ...received in error This count includes seg ments received on currently established connections tcpOutSegs Displays the total number of segments sent includ ing those on current connections but excludin...

Страница 355: ...t 1A1 Counter Value Delta tp25ErrorSymbol 40452300 0 tp25AtmHCSs 8 0 tp25AtmRxCells 13722 0 tp25AtmTxCells 0 0 Press return for more q to quit The fields in this display are defined as follows tp25Err...

Страница 356: ...n this display have the following meanings udpInDatagrams Shows the total number of UDP datagrams delivered to UDP users udpNoPorts Lists the total number of received UDP datagrams for which there was...

Страница 357: ...l Channel Connec tions VCCs on this signalling path q2931Restarts Displays the number of times the switch has lost and regained contact with the remote signalling entity on this path q2931CallsComplet...

Страница 358: ...5 4CTL 0 38 0d 01 55 0 0 4A3 0 16 4CTL 0 88 0d 01 55 0 0 4A4 0 5 4CTL 0 43 0d 01 55 0 0 Press return for more q to quit q The fields in this display have the following meanings Input Port Designates t...

Страница 359: ...8 7232 0 4D4 0 terminate 0d 00 08 0 0 4E1 0 terminate 0d 01 56 0 0 4E2 0 terminate 0d 01 56 0 0 4E3 0 terminate 0d 01 56 0 0 4CTL 0 terminate 0d 01 56 2518080 0 originate 4A1 0 0d 01 56 778309 0 Press...

Страница 360: ...D 34 AMI Statistics Commands...

Страница 361: ...n a 9A000 SFCS 200WG and on an SFCS 200BX For example port A1 on a 9A000 SFCS 200WG or an SFCS 200BX has a software port index of 0 Port C3 on a 9A000 SFCS 200WG or an SFCS 200BX has a software port i...

Страница 362: ...re Port Number Board Netmod Port Index A1 0 0 0 0 C1 16 0 2 0 A2 1 0 0 1 C2 17 0 2 1 A3 2 0 0 2 C3 18 0 2 2 A4 3 0 0 3 C4 19 0 2 3 A5 4 0 0 4 C5 20 0 2 4 A6 5 0 0 5 C6 21 0 2 5 B1 8 0 1 0 D1 24 0 3 0...

Страница 363: ...Trap Number Trap Name Description 0 asxSwLinkDown An asxSwLinkDown trap signifies that the sending protocol entity recognizes a failure in one of the ATM Switch links that is connected to another swit...

Страница 364: ...power supply index 9 asxPsOutputDown This trap alerts that one ATM switch power supply output or the power supply was physically removed The power supply that failed is identified by the power supply...

Страница 365: ...mperature sensor index 34 asxFabricTemperature OverTemp This trap alerts that one of the temperature sensors indicates over temperature The temperature sensor is identified by the temperature sensor i...

Страница 366: ...ow Alarm or FERF state The FERF or DS3 Yel low alarm is declared if either OOF LOF LOS or AIS is detected and persists for 2 5 5 seconds 43 asxDS3FERFOff This trap indicates that the specified DS3 por...

Страница 367: ...in the Yellow Alarm state The Yellow alarm is declared if either OOF or AIS is detected and persists for 2 5 5 seconds 57 asxDS1YellowOff This trap indicates that the specified DS1 port is no longer i...

Страница 368: ...d on the incoming signal 70 asxDS1LOFDetected This trap indicates that LOF Alarm is detected on the incoming signal 71 asxDS1LOFCleared This trap indicates that LOF Alarm is cleared on the incoming si...

Страница 369: ...indicates that the output queue for the given priority has exceeded its dedicated length and has begun overflowing into the shared buffer space on the network module 1025 asxOutputQueueCellLoss This...

Страница 370: ...as indicated by crXfrSecond aryUrl fails 1032 crConfMemAllocFail This trap is generated when Callrecord functionality is unable to allocate memory as specified by crMemory Allocated This can happen wh...

Страница 371: ...rap destina tion that is to be created Repeat this for as many SNMP trap destinations as needed Traps are active as soon as they are set E 2 2 Displaying SNMP Trap Destinations To list all of the curr...

Страница 372: ...t may need to be recreated later as a precaution a recommended practice is to list all trap destinations using AMI and either copy the screen or write down the destinations To delete a trap enter the...

Страница 373: ...es by organizing the nodes switches in that network into smaller groups It is this reorganization of the network topology that makes FT PNNI s sim plified routing possible By segmenting a large networ...

Страница 374: ...lly Note that loglinks discovered as a result of hello indications are uni directional Each switch initializes unidirectional loglinks that have an adjacent switch as the destination F 1 2 Topology Da...

Страница 375: ...as node identifi ers FT PNNI does not distinguish between node identifiers and reachability information Thus the IDs of nodes in the FT PNNI addressing map are NSAP prefixes In the default case at th...

Страница 376: ...refix that constitute the peer group ID The peer group ID is a unique identifier for every node switch or end system in a particular peer group Every switch and host in peer group A for exam ple will...

Страница 377: ...y each switch in a topology database In a small local area network LAN the topology is relatively simple mean ing that the switches in the LAN have a relatively small topology database to maintain As...

Страница 378: ...l hierarchy In this hierarchy communities of contiguous switches are grouped together and they are collectively summarized by a single logical node Figure F 3 shows the same network as in Figure F 2 a...

Страница 379: ...T PNNI Hierarchy Showing Lowest Level Peer Groups Peer Group D Peer Group C Peer Group B Peer Group A Peer Group Border Switch Switch Node Logical Link D 4 D 3 D 2 D 1 A 1 A 3 A 2 C 6 C 1 C 2 C 3 C 4...

Страница 380: ...but they are not aware of internal topology infor mation of other peer groups Instead the topologies of other peer groups are summarized as a single reachable location known as a peer group summary no...

Страница 381: ...topol ogy Information regarding these backbone links is propagated across peer group boundaries during database exchange and flooding F 2 6 Single Switch Perspective The main reason for grouping switc...

Страница 382: ...F 10 ForeThought PNNI...

Страница 383: ...nection an association established by the AAL between two or more next higher layer entities ABR Available Bit Rate a type of traffic for which the ATM network attempts to meet that traffic s bandwidt...

Страница 384: ...into the appropriate header data required for ATM i e port VPI and VCI also defines the AAL type to be used ASCII American Standard Code for Information Interchange a standard character set that typi...

Страница 385: ...d about a given adapter card by the device driver These statistics include ATM layer and ATM adaptation layer cell and error counts This can also be used to query other hosts via SNMP Backbone the mai...

Страница 386: ...M connection can be accepted based on the attributes of both the requested connection and the existing connections Call an association between two or more users or between a user and a net work entity...

Страница 387: ...vice a type of service in which information always traverses the same pre established path or link between two points sup ported by AAL 3 Corresponding Entities peer entities with a lower layer connec...

Страница 388: ...hierarchy Asynchronous data rates are defined as follows DS0 64kb s 1 voice channel DS1 1 544Mb s 24 DS0s DS1C 3 152 Mb s 2 DS1s DS2 6 312 Mb s 4 DS1s DS3 44 736 Mb s 28 DS1s Synchronous data rates S...

Страница 389: ...the authority to regulate all interstate telecom munications originating in the United States including transmission over phone lines FDDI Fiber Distributed Data Interface high speed data network that...

Страница 390: ...s of the first byte in an ATM cell header Used to control the flow of traffic across the User to Network Interface UNI and thus into the network Exact mechanisms for flow control are still under inves...

Страница 391: ...of information transferred to from the upper layer in a single interaction across a SAP Each Interface Data Unit IDU controls interface information and may also contain the whole or part of the SDU i...

Страница 392: ...0 Class C the default mask is 255 255 255 0 Subnet masking is used when a portion of the host ID is used to identify a subnetwork For example if a portion of a Class B network address is used for a su...

Страница 393: ...d to connect adjacent exposed pins on a printed circuit board that control the functionality of the card LAN Local Area Network a data network intended to serve an area of only a few square kilometers...

Страница 394: ...transmission control the upper sublayer of the IEEE Layer 2 OSI protocol that complements the MAC protocol IEEE standard 802 2 includes end system addressing and error checking LOF Loss Of Frame a typ...

Страница 395: ...om the Leaf Nodes to the Root Node Such a connection is also known as a Multipoint to Point Connection Multipoint to Multipoint Connection a collection of associated ATM VC or VP links and their assoc...

Страница 396: ...hosts with no previously established com munications path PBX Private Branch Exchange a private phone system switch that con nects to the public telephone network and offers in house connectivity To...

Страница 397: ...en the Root node sends information all of the remaining nodes on the connection called Leaf nodes receive copies of the information 2 Each of the Leaf Nodes on the connection can send information dire...

Страница 398: ...rom a corresponding entity and transmits it to another corresponding entity RFCs Requests For Comment IETF documents suggesting protocols and policies of the Internet inviting comments as to the quali...

Страница 399: ...a It also assumes that only one message is crossing the UNI at a time That is multiple end users at one location cannot interleave messages on the same VC but must queue them for sequential transmissi...

Страница 400: ...term for any communications medium which is permanently provisioned at the end points but switched in the middle In ATM there are two kinds of SPVCs smart permanent virtual path connec tions SPVPCs a...

Страница 401: ...h a signal occupies a fixed repetitive time slot within a higher rate signal Token Ring a network access method in which the stations circulate a token Stations with data to send must have the token t...

Страница 402: ...hysical path VCC Virtual Channel Connection a unidirectional concatenation of VCLs that extends between the points where the ATM service users access the ATM Layer The points at which the ATM cell pay...

Страница 403: ...f ATM cells between the point where a VPI value is assigned and the point where that value is translated or removed VPN Virtual Private Network a private voice communications network built on public s...

Страница 404: ...g 22 GLOSSARY...

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