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1-2

PA-A2 ATM CES Port Adapter Installation and Configuration

OL-3460-01

Chapter 1      Overview: PA-A2 ATM CES Port Adapter

Circuit Emulation Services Overview

Circuit Emulation Services Internetworking Function

CES-IWF is a service based on ATM Forum standards that allows communications between CBR and 
ATM UNI interfaces, that is, between non-ATM telephony devices (such as classic PBXs or TDMs) and 
ATM devices (such as Cisco 7200 series routers). Thus, a Cisco 7200 series router equipped with an 
ATM CES port adapter offers a migration path from classic T1/E1 CBR data communications services 
to emulated CES T1/E1 unstructured (clear channel) services or structured (N x 64) services in an ATM 
network. A Cisco uBR7200 series equipped with an ATM CES port adapter offers an ATM WAN 
connection between the broadband cable network and the Internet.

Figure 1-1

 is a simplified representation of CES-IWF functions in an ATM network. 

Figure 1-1

Typical CES-IWF Operations in an ATM Network

The circuit emulation services offered by the ATM CES port adapter are discussed in the following 
sections:

•

T1/E1 Unstructured (Clear Channel) CES Services, page 1-2

•

T1/E1 Structured (N x 64) CES Services, page 1-4

•

Channel-Associated Signaling (for Structured CES Services Only), page 1-6

T1/E1 Unstructured (Clear Channel) CES Services

Unstructured CES services in an ATM network emulate point-to-point connections over T1/E1 leased 
lines. This service maps the entire bandwidth necessary for a T1/E1 leased line connection across the 
ATM network, allowing users to interconnect PBXs, TDMs, and video conferencing equipment. 
Unstructured CES operations do not decode or alter the CBR data in any way.

The ATM CES port adapter supports DSX-1 physical interfaces, providing T1/E1 unstructured (clear 
channel) CBR data transmission services to Cisco 7200 series and Cisco uBR7200 series users at a rate 
of 1.544 Mbps for T1 and 2.048 Mbps for E1. 

The use of an ATM CES port adapter for unstructured CES services simulates a point-to-point T1/E1 
leased line across your ATM network. 

ATM PBX

PBX

PBX

OC-3/T3/.E3

OC-3/T3/E3

T1/E1

T1/E1

ATM UNI

PVC

ATM UNI

PVC

ATM DSU

S5971

CES-IWF 

(CBR to ATM UNI)

CES-IWF

 (CBR to A

TM UNI)

Router

Router

ATM

network

PBX

Содержание PA-A2

Страница 1: ...ttp www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 526 4100 PA A2 ATM CES Port Adapter Installation and Configuration Product Numbers PA A2 4T1C OC3SM PA A2 4T1C T3ATM PA A2 4E1XC OC3SM PA A2 4E1XC E3ATM Platforms Supported Cisco 7200 Series Cisco uBR7246 Text Part Number OL 3460 01 ...

Страница 2: ...dio antenna until the interference stops Move the equipment to one side or the other of the television or radio Move the equipment farther away from the television or radio Plug the equipment into an outlet that is on a different circuit from the television or radio That is make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses Modi...

Страница 3: ...ircuit Emulation Services Internetworking Function 1 2 T1 E1 Unstructured Clear Channel CES Services 1 2 T1 E1 Structured N x 64 CES Services 1 4 Channel Associated Signaling for Structured CES Services Only 1 6 Network Timing Services for CES Operations 1 8 Network Clock Synchronization 1 8 Designating a PRS Source Port in a Cisco 7200 Series Router or Cisco uBR7200 series 1 8 Network Clock Distr...

Страница 4: ...tifying Interface Addresses 1 27 Interface Addresses of Cisco 7200 Series Routers and Cisco uBR7200 Series Routers 1 27 C H A P T E R 2 Preparing to Install the PA A2 ATM CES Port Adapter 2 1 Required Tools and Equipment 2 1 Minimum Software and Hardware Requirements 2 1 Checking Hardware and Software Compatibility 2 2 Safety Guidelines 2 2 Safety Warnings 2 2 Electrical Equipment Guidelines 2 4 T...

Страница 5: ...ultipoint Subinterface 4 8 Configuring SVCs 4 9 Configuring the PVC That Performs SVC Call Setup 4 10 Configuring the Network Service Access Point Address 4 11 Configuring Classical IP and ARP over ATM 4 13 Classes of Service and Transmit Priority on the PA A2 ATM CES Port Adapter 4 13 Customizing the PA A2 ATM CES Port Adapter 4 14 Setting the MTU Size 4 15 Configuring an ATM Interface for Local ...

Страница 6: ...Contents vi PA A2 ATM CES Port Adapter Installation and Configuration OL 3460 01 Upgrading Your Boot Flash Image 4 25 Port Adapter Error Messages 4 26 ...

Страница 7: ...ntation page ix Obtaining Technical Assistance page x Objectives This document describes how to install and configure the dual wide ATM circuit emulation services CES port adapter hereafter referred to as the PA A2 ATM CES which is used in the following platforms Cisco 7200 series routers including the 2 slot Cisco 7202 4 slot Cisco 7204 and Cisco 7204VXR and the 6 slot Cisco 7206 and Cisco 7206VX...

Страница 8: ...ss Cisco IOS software configuration and hardware installation and maintenance documentation on the World Wide Web at http www cisco com public countries_languages shtml Cisco 7200 series routers For port adapter hardware and memory configuration guidelines refer to the Cisco 7200 Series Port Adapter Hardware Configuration Guidelines For hardware installation and maintenance information including t...

Страница 9: ...ite Preparation and Safety Guide To view Cisco documentation or obtain general information about the documentation refer to the following sections Obtaining Documentation page ix Obtaining Technical Assistance page x Customer service at 800 553 6387 or 408 526 7208 Customer service hours are 5 00 a m to 6 00 p m Pacific time Monday through Friday excluding Cisco observed holidays You can also send...

Страница 10: ...t and fax it to Cisco at 408 527 0730 You can e mail your comments to bug doc cisco com To submit your comments by mail use the response card behind the front cover of your document or write to the following address Cisco Systems Attn Document Resource Connection 170 West Tasman Drive San Jose CA 95134 9883 We appreciate your comments Obtaining Technical Assistance Cisco provides Cisco com as a st...

Страница 11: ...ecting significant aspects of business operations No workaround is available Priority level 1 P1 Your production network is down and a critical impact to business operations will occur if service is not restored quickly No workaround is available Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts when applicable Cisco TAC Web Site Th...

Страница 12: ... operations When you contact the TAC Escalation Center with a P1 or P2 problem a Cisco TAC engineer will automatically open a case To obtain a directory of toll free Cisco TAC telephone numbers for your country go to the following URL http www cisco com warp public 687 Directory DirTAC shtml Before calling please check with your network operations center to determine the level of Cisco support ser...

Страница 13: ...o interconnect existing T1 E1 interfaces and other types of constant bit rate CBR equipment CBR services include such features as PBX interconnect consolidated voice and data traffic and video conferencing With circuit emulation data received from an external device at the edge of an ATM network is converted to ATM cells sent through the network reassembled into a bit stream and passed out of the ...

Страница 14: ...s offered by the ATM CES port adapter are discussed in the following sections T1 E1 Unstructured Clear Channel CES Services page 1 2 T1 E1 Structured N x 64 CES Services page 1 4 Channel Associated Signaling for Structured CES Services Only page 1 6 T1 E1 Unstructured Clear Channel CES Services Unstructured CES services in an ATM network emulate point to point connections over T1 E1 leased lines T...

Страница 15: ...ctured CES applications in an ATM network In unstructured CES services user CBR data received from an edge device at one side of the network is segmented into ATM cells and propagated through the ATM network After traversing the network the ATM cells are reassembled into a CBR bit stream that matches the original user data This CBR data is then passed out of the network to the edge device at the d...

Страница 16: ...CAS The Channel Associated Signaling for Structured CES Services Only section on page 1 6 describes the CAS mechanism Figure 1 4 illustrates the digital crossconnect and channelized mapping functions offered by a Cisco 7200 series router or a Cisco uBR7200 series equipped with an ATM CES port adapter Single or multiple DS0 time slots can be mapped across the ATM network Each time slot or DS0 chann...

Страница 17: ... other DS0 channels or groups of DS0 channels to form an outgoing T1 E1 bit stream Thus you can combine structured CBR data with great flexibility for transport across an ATM network Figure 1 5 gives one example of how 24 available N x 64 time slots for T1 31 time slots for E1 not shown in an ATM CES port adapter can be combined to accomplish structured CBR data transport in an ATM network The DS0...

Страница 18: ... 5 requires a similar bundling of three time slots at the destination end of the PVC representing a data bandwidth of 192 kbps in order for the circuit to operate properly Channel Associated Signaling for Structured CES Services Only Because the ATM CES port adapter emulates constant bit rate services over ATM networks it must be capable of providing support for handling channel associated signali...

Страница 19: ...cuit at the ingress node time slot 2 can be different from the DS0 time slot configured at the egress node time slot 4 Only one such time slot can be configured at each end of the circuit when the on hook detection feature is used When you invoke this feature the ingress ATM CES port adapter monitors the ABCD bits in the incoming CBR bit stream to detect on hook and off hook conditions in the circ...

Страница 20: ... made available wherever required to synchronize the flow of CBR data from its source to its destination Network clock synchronization services This refers to a network clock synchronization and distribution service that provides a PRS to those user and network devices that require a precision reference timing signal for synchronizing the flow of CBR traffic Network Clock Synchronization Any const...

Страница 21: ...n the Cisco 7200 series router or Cisco uBR7200 series operating environment The important concepts that you should take from Figure 1 6 include the following Up to four clocking signals can be defined per Cisco 7200 series router or a Cisco uBR7200 series in the network The PRS that is used in Cisco 7200 series routers or a Cisco uBR7200 series must be traceable to a single clock source In Figure...

Страница 22: ...ow a PRS can be derived from the ATM network and provided to an edge node and propagated through the network to synchronize the flow of CBR data between the communicating ATM end nodes In Figure 1 7 when the PRS clock source is taken from the ATM network all the transmit nodes at the edge of the network on T1 E1 trunk lines on the ATM CES port adapter in Routers 1 2 and 3 are synchronized Figure 1...

Страница 23: ...nel and is the only clocking mode for structured N x 64 kbps CES services It is the recommended option for three reasons First this clocking mode is the only one that supports full CES functionality SRTS and adaptive clocking do not support structured CES services Second synchronous clocking exhibits superior stability reliability and wander jitter characteristics Third synchronous clocking is typ...

Страница 24: ...ynchronization services are not available The term adaptive clocking is used because the rate at which CBR data is propagated through an ATM network is driven by the rate at which such data is introduced into the network by the user s edge equipment For example adaptive clocking in an ATM CES port adapter derives timing for data transport by calculating the average rate at which data arrives and c...

Страница 25: ...R data Although synchronous clocking is the recommended default clocking mode for CES operations this fact does not preclude other clocking modes from consideration The cell delay variation CDV characteristics of the network measured in microseconds Each end to end CES circuit exhibits delay characteristics based on the following factors The delay characteristics of the individual devices particip...

Страница 26: ...t varies according to the particular data path used for the circuit Consequently the depth of the SAR buffer may increase or decrease in proportion to the CDV value for the CES circuit being set up You can issue the show ces circuit interface command in an unstructured clear channel circuit to measure the current CDV value See Chapter 4 Configuring the PA A2 ATM CES Port Adapter for more informati...

Страница 27: ...ATM link is a requirement Table 1 2 lists the different types of ATM CES port adapters and their associated part numbers Figure 1 9 PA A2 ATM CES Port Adapter PA A2 4T1C OC3SM or PA A2 4E1XC OC3SM Figure 1 10 PA A2 ATM CES Port Adapter PA A2 4T1C T3ATM or PA A2 4E1XC E3ATM You can install a PA A2 ATM CES port adapter in any available horizontally aligned port of port adapter slots in a Cisco 7200 ...

Страница 28: ... circuit VC multiplexed PPP payloads as specified by the PPP over AAL5 Internet Draft 12 23 97 Therefore the name for this new PPP over ATM feature is more accurately IETF PPP over ATM Note The IETF PPP over ATM feature does not currently support LLC encapsulated PPP over ATM Adaption Layer 5 AAL5 Features The PA A2 ATM CES port adapter has the following features Cross connect Circuit Emulation Se...

Страница 29: ...The system recognizes the installed PA A2 ATM CES port adapter If any of the above conditions are not met or if the initialization fails for other reasons the enabled LED does not go on Table 1 3 describes the LED that indicates port adapter status Table 1 4 describes the LEDs that indicated uplink port status E N A B L E D R C L K F E R F O C 3 S M O O F A IS 0 0 E N A B L E D 1 2 T 1 3 A L A R M...

Страница 30: ...M interface cable which is used to connect a router to an external DSU an ATM network A T3 E3 75 ohm coaxial interface cable which is used to connect a router to an external DSU an ATM network Both ATM cables conform to the EIA TIA 612 and EIA TIA 613 specifications The ATM port on the ATM CES port adapter is a DTE device For OC 3 single mode the ATM CES port adapter connects to the SONET SDH 155 ...

Страница 31: ...3 E3 75 Ohm Coaxial Cable and Connector Note For connections in Australia interconnecting cables shall comply with TS 016 clause 5 5 5 2 The maximum interconnecting cable insertion loss shall not exceed 12 dB measured at 17 184 kHz This attenuation should take into account any losses incurred by the presence of a digital distribution frame between equipment The T3 E3 line interface performs physic...

Страница 32: ...r supports RFC 1213 RFC 1406 RFC 1407 and SONET MIB RFC 1595 interface MIBs Refer to the ATM UNI specification for additional details on the MIBs Fibre Optic Transmission Specifications The following sections describe the SONET specifications for fiber optic transmissions define the power budget and help you approximate the power margin for single mode transmissions Maximum Transmission Distances ...

Страница 33: ...d dispersion penalty measured in decibels The power lost over the data link is the sum of the component dispersion and modal losses However at OC 3 speeds on single mode fiber dispersion and modal losses are minimal The following sections offer more detail on power budgeting Approximating the ATM CES Port Adapter Power Margin page 1 21 Using Statistics to Estimate the Power Budget page 1 23 For Fu...

Страница 34: ... dB PM 6 dB The value of 6 dB indicates that this link has sufficient power for transmission and does not exceed the maximum receiver input power If the power margin is positive as a rule the link will work Table 1 7 lists the factors that contribute to link loss and the estimate of the link loss value attributable to each factor The power margin calculated above should be greater than zero Circui...

Страница 35: ...dapter is configured in manufacturing for ungrounded at the receive interface The following steps explain how to set the configuration for grounded or ungrounded Step 1 Attach an ESD preventive wrist strap to yourself and to an unfinished chassis surface Step 2 Remove the PA A2 ATM CES port adapter from the chassis To do so follow the steps in the Port Adapter Removal and Installation section on p...

Страница 36: ...lastic Shield Figure 1 18 Location of Jumper on PA A2 4E1XC E3ATM PA A2 ATM CES Port Adapter Slot Locations on the Supported Platforms This section discusses the module slot locations on the supported platforms The illustrations that follow summarize slot location conventions on each platform Cisco 7200 Series Routers and Cisco uBR7200 Series Routers Slot Numbering page 1 25 Screws Plastic shield ...

Страница 37: ... LA S S E 1 P R O D U C T O LA S E R C LA S S 1 E N A B L E D R X C E LL S R X C A R R IE R R X A LA R M ENHANCED ATM 15 5 S M I R X T X C P U R E S E T 1 O P O W E R O K FAST ETHERNET INPUT OUTPUT CONTROLLER E N A B L E D P C M C IA E J E C T S L O T 0 S L O T 1 Cisco 7200 SERIES 11603 Port adapter slot 1 Port adapter slot 2 blank port adapter installed H7399 2 EN AB LE D 0 2 1 3 LI NK 0 1 2 3 EN...

Страница 38: ... E N R X 0 1 2 3 4 T X R X T X R X T X R X T X R X T X 0 4 1 3 5 6 TOKEN RING 0 1 2 3 Cisco 7200 Series FAST ETHERNET INPUT OUTPUT CONTROLLER E N A B L E D P C M C IA E J E C T S L O T 0 S L O T 1 F E M II E N 0 7 1 2 3 4 5 6 SERIAL V 35 ETHERNET 10BT EN AB LE D 0 2 1 3 LI NK 0 1 2 3 M II EN R J 4 5 EN R J 4 5 R J 4 5 LIN K 1O PW R O K E N A B LE D M II L IN K R J4 5 FAST ETHERNET 0 Port adapter s...

Страница 39: ...co 7200 series routers or uBR7200 series routers is composed of a two part number in the format slot port number In Cisco 7200 series routers slots are numbered from the lower left to the upper right beginning with slot 1 and continuing through slot 2 for the Cisco 7202 slot 4 for the Cisco 7204 and slot 6 for the Cisco 7206 Slot 0 is reserved for the optional Fast Ethernet port on the I O control...

Страница 40: ...1 28 PA A2 ATM CES Port Adapter Installation and Configuration OL 3460 01 Chapter 1 Overview PA A2 ATM CES Port Adapter Identifying Interface Addresses ...

Страница 41: ... 2 7 CE Compliance page 2 7 Required Tools and Equipment You need the following tools and parts to install modules If you need additional equipment contact a service representative for ordering information PA A2 ATM CES port adapter to be installed Specific cables for your module Number 1 Phillips and a 3 16 inch flat blade screwdriver Number 2 Phillips screwdriver Your own electrostatic discharge...

Страница 42: ... family or enter a specific product number to search for the minimum supported software release needed for your hardware Safety Guidelines This section provides safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring Safety Warnings Safety warnings appear throughout this publication in procedures that if performed incorrectly m...

Страница 43: ...ent soyez conscient des dangers posés par les circuits électriques et familiarisez vous avec les procédures couramment utilisées pour éviter les accidents Pour prendre connaissance des traductions d avertissements figurant dans cette publication consultez le document Regulatory Compliance and Safety Information Conformité aux règlements et consignes de sécurité qui accompagne cet appareil Warnung ...

Страница 44: ...ng telephone lines Aviso Este símbolo de aviso indica perigo Encontra se numa situação que lhe poderá causar danos físicos Antes de começar a trabalhar com qualquer equipamento familiarize se com os perigos relacionados com circuitos eléctricos e com quaisquer práticas comuns que possam prevenir possíveis acidentes Para ver as traduções dos avisos que constam desta publicação consulte o documento ...

Страница 45: ...ctor levers or captive installation screws to release the bus connectors from the backplane or midplane Handle carriers by available handles or edges only avoid touching the printed circuit boards or connectors Place a removed board component side up on an antistatic surface or in a static shielding container If you plan to return the component to the factory immediately place it in a static shiel...

Страница 46: ...e instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case users will be required to correct the interference at their own expense You can determine whether your equipment is causing interference by turning it off If the interference stops it was probably caused by the Cisco equ...

Страница 47: ...ompliance The CE0168 marking on the ATM CES port adapter signifies that the port adapter s 120 ohm E1 ports meet United Kingdom directive 0168 and has been designed to CE standards which complies with the CTR12 and TBR13 specifications The CE label is located on the top of the ATM CES port adapter Figure 2 4 shows the CE label for the 120 ohm E1 ports of the ATM CES port adapter Figure 2 4 CE Labe...

Страница 48: ...2 8 PA A2 ATM CES Port Adapter Installation and Configuration OL 3460 01 Chapter 2 Preparing to Install the PA A2 ATM CES Port Adapter CE Compliance ...

Страница 49: ... carrier and is sensitive to electrostatic discharge ESD damage Before you begin installation read Chapter 2 Preparing to Install the XXXXX Module for a list of parts and tools required for installation Note When a slot is not in use a blank must fill the empty slot to allow the router or switch to conform to electromagnetic interference EMI emissions requirements and to allow proper airflow acros...

Страница 50: ...or installing and replacing a module in a supported platform refer to the Port Adapter Removal and Installation section on page 3 6 Each module has a bus connector that connects it to the router The connector has a set of tiered pins in three lengths that send specific signals to the system as they make contact with the module The system assesses the signals it receives and the order in which it r...

Страница 51: ...e carrier between the upper and the lower edges of the module slot and to ensure that the edge connector at the rear of the module mates with the connection at the rear of the module slot make certain that the carrier is positioned correctly as shown in the cutaway in the following illustrations Warning When performing the following procedures wear a grounding wrist strap to avoid ESD damage to th...

Страница 52: ...NPUT OUTPUT CONTROLLER E N A B L E D P C M C IA E J E C T S L O T 0 S L O T 1 F E M II vX 7200 Series VXR Step 1 Remove installed single width port adapters from the slots on both sides of the port adapter slot divider Step 2 With one hand raise the slot divider lever to unlock the slot divider from the chassis Step 3 With the slot divider lever still raised use your other hand to pull the slot di...

Страница 53: ... Follow this procedure Step 1 Remove installed single width port adapters from the slots on both sides of the port adapter slot divider Step 2 With one hand raise the slot divider lever to unlock the slot divider from the chassis See Figure 3 2 Figure 3 2 Slot Divider Lever Cisco uBR7246 Shown Step 3 With the slot divider lever still raised use your other hand to pull the slot divider from the cha...

Страница 54: ...ive step by step instructions on how to remove and install modules Although the procedures may refer to a particular type of module the steps are the same for installing and removing all types of modules This section contains the following illustrations Cisco 7200 Series Routers and Cisco 7200 VXR Routers Removing and Installing a Module page 3 7 Cisco uBR7200 Series Routers Removing a Module page...

Страница 55: ...e port adapter slot See B Step 6 With the port adapter halfway into the slot connect all required cables to the port adapter After connecting all required cables carefully slide the port adapter all the way into the slot until the port adapter is seated in the router midplane Step 7 After the port adapter is properly seated lock the port adapter lever See A 27996 2 0 4 1 3 5 6 FAST SERIAL EN TD TC...

Страница 56: ... lever remains in the unlocked position Place the port adapter lever Cisco uBR7223 see A or the port adapter retention clip Cisco uBR7246 and Cisco uBR7246 VXR see B in the unlocked position Either mechanism remains in the unlocked position Step 2 Grasp the handle of the port adapter and pull the port adapter from the router about halfway out of its slot If you are removing a blank port adapter pu...

Страница 57: ...rt adapter slot Step 2 Carefully slide the new port adapter halfway into the port adapter slot Step 3 With the port adapter halfway into the slot connect all required cables to the port adapter After connecting all required cables carefully slide the port adapter all the way into the slot until the port adapter is seated in the router midplane Step 4 After the port adapter is properly seated lock ...

Страница 58: ...3 10 PA A2 ATM CES Port Adapter Installation and Configuration OL 346 01 Chapter 3 Removing and Installing the PA A2 ATM CES Port Adatper Port Adapter Removal and Installation ...

Страница 59: ...ion page 4 21 ATM Configuration page 4 24 Upgrading Your Boot Flash Image page 4 25 Port Adapter Error Messages page 4 26 Using the EXEC Command Interpreter You modify the configuration of your router through the software command interpreter called the EXEC also called enable mode You must enter the privileged level of the EXEC command interpreter with the enable command before you can use the con...

Страница 60: ...n For a summary of the configuration options available and instructions for configuring interfaces on a port adapter refer to the appropriate configuration publications listed in the Related Documentation section on page viii When an interface is enabled taken out of shutdown mode with no additional arguments the default interface configuration file parameters are functional You execute configurat...

Страница 61: ...u have finished press Ctrl Z hold down the Control key while you press Z or enter end or exit to exit configuration mode and return to the EXEC command interpreter Note If you need to shut down additional interfaces enter the interface command followed by the interface type and the interface address of the interface for each of the interfaces on your port adapter Use the no shutdown command to ena...

Страница 62: ... interface command followed by the type of interface and the interface address of the interface you plan to configure The command for your port adapter will be specific to the technology of your interface The Using the show interfaces Command section on page 4 17 provides examples Step 3 Assign an IP address and subnet mask to the interface if IP routing is enabled on the system by using the ip ad...

Страница 63: ...ambling Use the no form of the command to restore the default value Router config if DS3 scramble Step 5 Specify DS 3 framing m23plcp cbitplcp m23adm or cbitadm Use the no form of the command to return to the default which is cbitadm Router config if framing m23plcp cbitplcp m23adm cbitadm Configuring the PA A2 ATM CES Port Adapter for E3 To configure the PA A2 ATM CES port adapter for E3 perform ...

Страница 64: ...ifference between SONET and SDH framing modes is the type of cell transmitted when no user or data cells are available The ATM forum specifies use of idle cells if unassigned cells are not generated More specifically in Synchronous Transport Module X STM X mode an ATM interface sends idle cells for cell rate decoupling In Synchronous Transport Signal Xc STS Xc mode the ATM interface sends unassign...

Страница 65: ...e PVCs into nonvolatile RAM NVRAM they are used when the system image is reloaded Some ATM switches might have point to multipoint PVCs that do the equivalent of broadcasting If a point to multipoint PVC exists it can be used as the sole broadcast PVC for all multicast requests Like Frame Relay ATM supports twp types of interface point to point and multipoint The one you choose determines whether ...

Страница 66: ... IP address is 2 2 2 1 and the remote interface IP address is 2 2 2 2 Router show interfaces atm 1 1 0 200 interface ATM1 1 0 200 multipoint ip address 2 2 2 1 255 255 255 0 no ip directed broadcast pvc 2 200 protocol ip 2 2 2 2 broadcast InARP is enabled on multipoint links by default The following example creates a multipoint subinterface By using the show atm map command you can see that InARP ...

Страница 67: ...SVCs are created and released dynamically providing user bandwidth on demand This service requires a signaling protocol between the router and the switch The ATM signaling software provides a method of dynamically establishing maintaining and clearing ATM connections at the User Network Interface UNI The ATM signaling software conforms to the ATM Forum UNI 4 0 specification In UNI mode the user is...

Страница 68: ...ms SVC Call Setup ATM uses out of band signaling One dedicated PVC exists between the router and the ATM switch over which all SVC call establishment and call termination requests flow After the call is established data transfer occurs over the SVC from router to router The signaling that accomplishes the call setup and teardown is called Layer 3 signaling or the Q 2931 protocol For out of band si...

Страница 69: ...e of VCI is 5 the range of VCI values is 0 through 65535 Note VCI values 0 through 31 are reserved and do not carry data traffic Configuring the Network Service Access Point Address Every ATM interface involved with signaling must be configured with a network service access point NSAP address The NSAP address is the ATM address of the interface and must be unique across the network To configure an...

Страница 70: ...nsap address nsap address The following is an example of an NSAP address assigned to ATM interface 4 0 on a Cisco 7200 series Cisco uBR7200 series or Cisco 7100 series router Router config interface atm 4 0 Router config if nsap address AB CDEF 01 234567 890A BCDE F012 3456 7890 1234 12 You can display the ATM address for the interface by executing the show interfaces atm command Configuring the E...

Страница 71: ...d cell is chosen to be transmitted out an interface during a cell time slot and ensures that real time ATM service classes which typically offer more robust QoS and traffic guarantees have a higher likelihood of access to the next cell time slot Table 4 1 lists the ATM service classes and their default transmit priorities on the PA A2 ATM CES port adapter Note Refer to the Feature Module documenta...

Страница 72: ...p 3 The final action is to confirm your settings Note how the router indicates the changed transmit priority level It is now at level 2 Router show atm vc 2 VC 2 doesn t exist on interface ATM2 0 ATM5 0 VCD 2 VPI 1 VCI 100 UBR PeakRate 10000 AAL5 LLC SNAP etype 0x0 Flags 0x20 VCmode 0x0 OAM frequency 0 second s PA TxRingLimit 0 paritcles PA Rx Limit 0 particles InARP frequency 15 minute s Transmit...

Страница 73: ... configure an ATM interface for local loopback useful for checking that the PA A2 ATM CES port adapter is working by looping the transmit data back to the receive data use the following command Router config if loopback diagnostic Router config if no loopback diagnostic The no form of the command turns off local loopback Configuring an ATM Interface for External Loopback To configure an ATM interf...

Страница 74: ...face type installed the Cisco IOS software version the names and sources of configuration files and the boot images using the show version or show hardware command Note The outputs that appear in this document may not match the output you receive when running these commands The outputs in this document are examples only Cisco 7200 Series Routers Example Output of the show version Command Following...

Страница 75: ...Port adapter is analyzed Port adapter insertion time 00 44 57 ago EEPROM contents at hardware discovery Hardware Revision 1 0 PCB Serial Number H Part Number 73 7981 0 Board Revision 1A RMA Test History 00 RMA Number 00 00 00 RMA History 00 Unknown Field type 0088 00 00 00 01 Product Number PA ATM DBL DLX OC3MM Top Assy Part Number 800 20782 01 EEPROM format version 4 EEPROM contents hex 0x00 04 F...

Страница 76: ... throttles 0 input errors 0 CRC 0 frame 0 overrun 0 ignored 0 abort 8763526 packets output 296268354 bytes 0 underruns 0 output errors 0 collisions 0 interface resets 0 output buffer failures 0 output buffers swapped out Using the ping Command to Verify Network Connectivity Using the ping command you can verify that an interface port is functioning properly This section provides a brief descriptio...

Страница 77: ...255 txload 1 255 rxload 1 255 Encapsulation ATM loopback set Keepalive not supported Encapsulation s AAL5 PVC mode 256 TX buffers 256 RX buffers 2048 maximum active VCs 1024 VCs per VP 1 current VCCs VC idle disconnect time 300 seconds Last input 00 03 16 output 00 03 16 output hang never Last clearing of show interface counters never Queueing strategy fifo Output queue 0 40 0 drops input queue 0 ...

Страница 78: ...orts the traffic shaping parameters defined in Table 4 2 This ensures that generated traffic conforms to the ATM Forum Traffic Management Specification Version 4 0 Shaping values are configured using the vbr nrt command in VC configuration mode Note For more information about traffic management specific to the various class of service categories refer to the ATM Technical Tips on Cisco com Table 4...

Страница 79: ...e errors the PA A2 ATM CES port adapter also takes snapshots of the last VCI VPI that caused the error Each PA A2 ATM CES port adapter error counter is made up of 16 bits Errors counted include the following CRC errors Giants received No buffers available Framing errors Application layer or physical layer errors Packet timeout errors on receive The PA A2 ATM CES port adapter provides port adapter ...

Страница 80: ...dx 0x451 rx_pool_info 0x62F26660 Control data base address rx_buf_base 0x0E3ABEE0 rx_p_base 0x62ECAD80 rx_pak 0x62DDE7F8 cmd 0x62ECA7A0 framer 0x603F75C0 framer_cb 0x62ECABA0 framer_base 0x3F100000 pci_pa_stats 0x7E1B6840 device_base 0 0x3F000000 device_base 1 0x3F400000 ssram_base 0 0x3F200000 ssram_base 1 0x3F600000 sdram_base 0 0x3F300000 sdram_base 1 0x3F700000 pa_cmd_buf 0 0x3F2FFC00 pa_cmd_b...

Страница 81: ...t VCs and traffic information Specifying a VCD displays specific information about that VCD Router show atm vc vcd Use the show atm interfaces command to show current information about an ATM interface The command displays ATM specific information about an interface Router show atm interfaces Use the show atm traffic command to show current ATM traffic The command displays global information about...

Страница 82: ...n command to display the configuration of the system hardware the number of each interface processor type installed the software version the names and sources of configuration files and the boot images Note For examples of the show version command for all supported platforms see the Using the show version or show hardware Commands section on page 4 16 ATM Configuration Cisco IOS Release 11 3 T int...

Страница 83: ...recommend that you also upgrade your boot image To upgrade your boot image you can copy the new boot image from a network server to Flash memory on your router To copy a boot image from a Trivial File Transfer Protocol TFTP server to Flash memory complete the following procedure Step 1 Enter configuration mode Router configure terminal Enter configuration commands one per line End with CNTL Z Rout...

Страница 84: ...PA A2 ATM CES port adapter receive buffers are allocated from static random access memory SRAM As a result during bootup if the PA A2 ATM CES port adapter cannot find enough contiguous SRAM for its use the system stops bringing up the PA A2 ATM CES port adapter and displays an error message such as the following ATMPA A2 PCIMEMNOTENOUGH Not Enough PCI memory 0x19874 to support ATM PA on bay 5 ...

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