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Nortel Networks 8672A Chapter 2 Passport 8672ATM Module technology overview

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Using the Passport 8672ATM Module

Chapter 2Passport 8672ATM Module technology overview

This chapter contains the following inform ation:

•“ATM terms and acronyms,” next

•“SONET terms and acronyms” on page33

ATM terms and acronyms

Asynchronous transfer mode (ATM) is a connection-oriented, cell-based

technology that relays traffic across a network. ATM provides a cost-effective

way of transmitting voice, video, and data across a network at high speeds. It

offers topology-independent, resilient networking technology.

An ATM cell is a fixed-length packet of 53 bytes. It consists of a 5-byte header

containing address information and a fixed 48-byte information field. The

fixed-length cell size allows you to predict network delays.

The following terms and acronyms are frequently used with ATM information:

•ATM: Asynchronous transfer mode. ATM is a switched, connection-oriented,

fixed-length, cell-based transmission method specifically designed to run at

high data rates and to carry a complete range of user traffic, including voice,

data, and video. ATM uses dedicated media connections running in parallel,

allowing simultaneous multiple connections through a single switch device at

very high speeds.

•PVC: Permanent virtual circuit. Dedicated connection between devices that is

manually set up.

•SVC: Switched virtual circuit. On-demand connection between an ATM or

frame relay source and destination that lasts for the duration of the

transmission.

Contents

Main 209195-A Copyright 2001 Nortel Networks Trademarks Statement of conditions USA requirements only Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice Page Page Page Page Contents Chapter 4 Managing the Passport 8672ATM Module with Device Manager. . . . . . . . 47 Chapter 5 Managing the Passport 8672ATM Module with the CLI . . . . . . . . . . . . . . . 73 Chapter 6 Configuring the Passport 8672ATM Module . . . . . . . . . . . . . . . . . . . . . . . 115 Page Figures Page Page Page Tab le s Page Preface Before you begin Text conventions Page Related publications Page How to get help Chapter 1 About the Passport 8672ATM Module Features ATM ELANs, and Ethernet VLANs Virtual network router Traffic shaping RFC 1483 Support Physical description Media dependent adapters Online LED MDA LEDs Console and Diag ports Page Chapter 2 Passport 8672ATM Module technology overview ATM terms and acronyms Page SONET terms and acronyms SONET transmission rates Chapter 3 Installing the Passport 8672ATM Module Safety and environmental precautions Page Installing the Passport 8672ATM Module . Page Verifying installation Initialization Page 42 Chapter 3 Installing the Passport 8672ATM Module Figure 10 Unsuccessful download screen output ******************************** MDA insertion and configuration Replacing a module Starting the system after a module replacement Starting the system with an empty slot Page Chapter 4 Managing the Passport 8672ATM Module with Device Manager Port numbering Device Manager Device Manager access and passwords Installing Device Manager Page Configuring ATM using Device Manager Page Chapter 4 Managing the Passport 8672ATM Module with Device Manager 53 Table 5 Interface tab items Resetting the module Page 3Click the ATM tab. The ATM tab opens (Figure14). Viewing MDA information Enabling or disabling a port Editing port parameters Editing ATM and framing parameters Table 9 describes the items in the ATM tab. Editing circuit parameters Table 1 0 describes the fields in the ATM PVC tab. 4Click Insert. The Insert ATM PVC dialog box opens (Figure18). Table 1 1 describes the fields in the Insert ATM PVC dialog box. 5In the Vpi field, type the VPI-bit size (an integer between 0 and 255). Deleting a PVC Configuring ATM 1483 ELAN parameters Table 1 2 describes the fields in the ATM 1483 ELAN tab. 4Click Insert. The Insert ATM 1483 ELAN dialog box opens (Figure 22). Page Page Deleting an ATM 1483 ELAN Page Page Chapter 5 Managing the Passport 8672ATM Module with the CLI Command line interface Configuration commands Module commands 1483 ELAN statistics config atmcard elan-stats clear atm elan-stats <vlan id> show atm elan-stats <vlan id> clear atm elan-stats Port commands 78 Chapter 5 Managing the Passport 8672ATM Module with the CLI config atm command Table 1 6 describes the parameters and variables for the config atm <ports> Tabl e 16 con fig atm command parameters and variables Chapter 5 Managing the Passport 8672ATM Module with the CLI 79 config atm pvc command Table 1 7 describes the parameters and vari ables for the config atm pvc Tabl e 16 con fig atm command parameters and variables (continued) 80 Chapter 5 Managing the Passport 8672ATM Module with the CLI config atm pvc 1483 command config atm <ports> pvc 1483 ip config atm <ports> pvc 1483 ipx Table 1 8 describes the parameters and v ariables for the config atm <ports> pvc 1483 command. Tabl e 18 con fig atm pvc 1483 bridged command parameters and variables Table 1 9 describes the parameters and vari ables for the config atm pvc 1483 ip command. config atm info command Figure 27 shows a sample of the output resulting from executing the config atm Show commands show ports info atm all command Chapter 5 Managing the Passport 8672ATM Module with the CLI 83 Figure 28 show ports info atm all command output 84 Chapter 5 Managing the Passport 8672ATM Module with the CLI Table 2 1 describes the information fields for the show ports info atm all command. Table 21 Information fields for the s how ports info atm all command Chapter 5 Managing the Passport 8672ATM Module with the CLI 85 Figure 29 show ports info atm ports command output show ports info atm ports command show ports info atm ports Table 21 Information fields for the s how ports info atm all command (continued) 86 Chapter 5 Managing the Passport 8672ATM Module with the CLI Table 2 2 describes the information fields for the show ports info atm ports command. Table 22 Information fields for the s how ports info atm ports command Chapter 5 Managing the Passport 8672ATM Module with the CLI 87 show ports info atm pvc command show ports info atm pvc [<ports>] Figure 30 show ports info atm pvc command output Table 2 3 describes the information fields for the show ports info atm pvc command. Table 23 Information fields for the s how ports info atm pvc command show ports info atm 1483 command Table 2 4 describes the information fields for the show ports info atm 1483 command. show ports stats atmport command This command displays statistics for atm ports (Figure 32). The command uses the syntax: 90 Chapter 5 Managing the Passport 8672ATM Module with the CLI Figure 32 show ports stats atmport [<port num>] command output Table 2 5 describes the information fields for the show ports stats atmport command. Table 25 Information fields for the show ports stats atmport command show ports stats atm felinecurrent Figure 33 shows sample output for the show ports stats atm 92 Chapter 5 Managing the Passport 8672ATM Module with the CLI Figure 33 show ports stats atm felinecurrent command output Table 2 6 describes the information fields for the show ports stats atm show ports stats atm felineinterval Table 2 7 describes the information fields for the show ports stats atm 94 Chapter 5 Managing the Passport 8672ATM Module with the CLI show ports stats atm fepathcurrent Table 27 Information fields for the show ports stats atm felineinterval Table 2 8 describes the information fields for the show ports stats atm show ports stats atm fepathinterval 96 Chapter 5 Managing the Passport 8672ATM Module with the CLI Figure 36 show ports stats atm fepathinterval command output Table 2 9 describes the information fields for the show ports stats atm show ports stats atm linecurrent This command displays current st atistics (Figure 37) for the line. The command uses the syntax: Table 3 0 describes the information fields for the show ports stats atm 98 Chapter 5 Managing the Passport 8672ATM Module with the CLI show ports stats atm lineinterval Table 30 Information fields for the s how ports stats atm linecurrent Table 3 1 describes the information fields for the show ports stats atm show ports stats atm pathcurrent 100 Chapter 5 Managing the Passport 8672ATM Module with the CLI Figure 39 show ports stats atm pathcurrent command output Table 3 2 describes the information fields for the show ports stats atm show ports stats atm pathinterval Table 3 3 describes the information fields for the show ports stats atm 102 Chapter 5 Managing the Passport 8672ATM Module with the CLI show ports stats atm sectioncurrent Table 33 Information fields for the show ports stats atm pathinterval Table 3 4 describes the information fields for the show ports stats atm show ports stats atm sectioninterval 104 Chapter 5 Managing the Passport 8672ATM Module with the CLI Figure 42 show ports stats atm sectioninterval command output Table 3 5 describes the information fields for the show ports stats atm show ports stats atm sonetmediumtbl This command displays statistics (Figure43) on the SONET medium. The command uses the syntax: Table 3 6 describes the information fields f or the show ports stats atm sonetmediumtbl command. Web management ATM folder Table 3 7 describes the fields displayed in the System page. 108 Chapter 5 Managing the Passport 8672ATM Module with the CLI Table 37 System page fields (continue d) Page Table 3 8 describes the fields displayed in th e PVC page. Page 112 Chapter 5 Managing the Passport 8672ATM Module with the CLI Table 3 9 describes the fields displayed in the 1483 ELAN page. To view the current port parameters, in the ATM menu, click Port. The Port page opens (Figure49). Table 39 1483 ELAN page items Table 4 0 describes the fields displayed in th e Port page. 114 Chapter 5 Managing the Passport 8672ATM Module with the CLI Table 40 Port page items (continued) Chapter 6 Configuring the Passport 8672ATM Module Initial configuration Changing the clock setting using Device Manager Changing the clock setting using the CLI Basic configuration procedures Bridging point-to-point traffic using an ATM 1483 PVC using Device Manager Creating a VLAN byPort and adding ports Table 4 1 describes the Basic tab fields. Page Page Configuring an ATM 1483 PVC Associating the PVC with the VLAN Bridging point-to-point traffic using an ATM 1483 PVC using the CLI config vlan 2 create byport 1 config vlan 2 port add 1/1, 3/40-3/48 config atm 1/1 pvc create 0.100 enc 1483-null serv ubr config atm 1/1 pvc create 0.100 enc 1483-null serv vbr<PCR value>scr<SCR value> mbs<MBS value> Bridging point-to-multipoint traffic using an ATM 1483 PVC using Device Manager Configuring two ATM 1483 PVCs on the same ATM port Associating the PVCs with the same VLAN Bridging point-to-multipoint traffic using an ATM 1483 PVC using the CLI Configuring an IP routing 1483 PVC using Device Manager Creating two VLANs byPort Assigning IP addresses Page Enabling RIP routing Enabling OSPF routing Page Configuring a null-encapsulation PVC Associating the PVC with the VLAN Configuring an IP routing 1483 PVC using the CLI Configuring an IPX routing 1483 PVC using Device Manager Creating two VLANs byPort Configuring IPX network numbers Page Enabling IPX forwarding Enabling IPX network number forwarding Configuring a null-encapsulation PVC Associating the PVC with the VLAN Configuring an IPX routing 1483 PVC using the CLI Page Appendix A Technical Specifications This appendix lists the technical specifications for the Passport 8672ATM Module. Page Appendix B Factory defaults Page Index A C D E F G H L M N O P R S T U V W