Avaya Configuring Frame Relay Services Uživatelský manuál

Part No. 117376-C Rev. 00May 1998BayRS Version 12.20Site Manager Software Version 6.20 BCC Version 4.00 ConfiguringFrame Relay Services

x117376-C Rev. 00Traffic Shaping Control ...3-68Using Data Compress

Configuring Frame Relay Services3-30117376-C Rev. 00Low Queue LImitThe low queue limit specifies the maximum number of buffers queued in low queue for

Customizing Frame Relay117376-C Rev. 003-31 Excess BurstThe excess burst rate (Be) combines with the committed burst rate to determine the maximum num

Configuring Frame Relay Services3-32117376-C Rev. 00For example, the following command line sets a CIR value of 5,000 bits.pvc/1/2/51# committed-burst

Customizing Frame Relay117376-C Rev. 003-33 Using the BCCThe default value for the wcp-control command is enabled. To disable compression for this vir

Configuring Frame Relay Services3-34117376-C Rev. 00Grouping Service Records for Multiline ModeUsing Site Manager, you can configure two or more servi

Customizing Frame Relay117376-C Rev. 003-35 Removing Multiline ServicesTo remove multiline services:For information about the Bay Networks proprietary

Configuring Frame Relay Services3-36117376-C Rev. 00You can also:• Enable call screening and blocking.• Customize the inactivity timer and mode.You ca

Customizing Frame Relay117376-C Rev. 003-37 Using Site ManagerTo add service records to a frame relay interface: Deleting Service Records for SVCsYou

Configuring Frame Relay Services3-38117376-C Rev. 002.Enter the delete command and the service command and name in this format: delete service/<ser

Customizing Frame Relay117376-C Rev. 003-39 SVC Call Block DirectionThe svc-call-block-direction command enables you to block certain type of calls on

117376-C Rev. 00 xiFiguresFigure 2-1. Frame Relay Network ...2-2Figure 2-

Configuring Frame Relay Services3-40117376-C Rev. 00SVC Screen UsageThe svc-screen-usage command enables you to allow or disallow calls from numbers i

Customizing Frame Relay117376-C Rev. 003-41 Adding SVC Options to Service RecordsYou can use either the BCC or Site Manager to add SVC options to serv

Configuring Frame Relay Services3-42117376-C Rev. 00Disabling SVCsYou can use either the BCC or Site Manager to disable SVC options without deleting t

Customizing Frame Relay117376-C Rev. 003-43 For example:box; serial/3/2; frame-relay/3/2; service/8.0.3; svc-options/toronto2.Enter the state command

Configuring Frame Relay Services3-44117376-C Rev. 00Disconnecting Active SVCsTo disconnect an active SVC:Editing LAPF Parameters for SVCsFrame relay L

Customizing Frame Relay117376-C Rev. 003-45 Using the BCCYou can edit the following parameters for LAPF in the BCC, as described in this section:• Sta

Configuring Frame Relay Services3-46117376-C Rev. 002.Enter the station-type command and one of the following options:dcedtenetworkside (which means D

Customizing Frame Relay117376-C Rev. 003-47 2.Enter the retransmission-timer command and the value you want to use.retransmission-timer <integer>

Configuring Frame Relay Services3-48117376-C Rev. 002.Enter the retransmission-limit command and the value you want to use.retransmission-limit <in

Customizing Frame Relay117376-C Rev. 003-49 For example:box; serial/1/2; frame-relay/1/2; lapf/1/22.Enter the window-size command and the value you wa

Configuring Frame Relay Services3-50117376-C Rev. 00Editing Signaling Attributes or Parameters for SVCsA DTE and the frame relay network exchange vari

Customizing Frame Relay117376-C Rev. 003-51 For example, the following command line sets a maximum of 200 SVCs:signalling/3/2# maximum-svcs 200signall

Configuring Frame Relay Services3-52117376-C Rev. 00<integer> is the number of seconds allowed. Legal values are 20 to 90 seconds. The default i

Customizing Frame Relay117376-C Rev. 003-53 <integer> is the number of seconds allowed. Legal values are 2 to 90 seconds. The default is 10.For

Configuring Frame Relay Services3-54117376-C Rev. 002.Enter the status-enquiry-retry command and the integer value you want to use.status-enquiry-retr

Customizing Frame Relay117376-C Rev. 003-55 Setting Inactivity Values for SVCsThe inactivity timer and inactivity mode timer attributes and parameters

Configuring Frame Relay Services3-56117376-C Rev. 00bothoutboundinboundeither For example, the following command line sets the inactivity direction to

Customizing Frame Relay117376-C Rev. 003-57 service/8.0.32# svc-inactivity-direction outboundservice/8.0.32#Using Site ManagerTo set inactivity values

Configuring Frame Relay Services3-58117376-C Rev. 00Controlling Congestion for SVCsCongestion occurs when a node receives more frames than it can proc

Customizing Frame Relay117376-C Rev. 003-59 If you enable congestion control, all SVCs on the interface use congestion control and the values you spec

117376-C Rev. 00 xiiiTablesTable 2-1. PVC and SVC Protocol and Feature Support ...2-4Table 2-2. LAPF Timeout a

Configuring Frame Relay Services3-60117376-C Rev. 00Congestion TimerTo change the value for the congestion timer:1.Navigate to the prompt for the inte

Customizing Frame Relay117376-C Rev. 003-61 For example, the following command line sets a congestion counterof 30 notifications:frame-relay/1/2# cong

Configuring Frame Relay Services3-62117376-C Rev. 00For example, the following command line enables congestion control for this frame relay interface:

Customizing Frame Relay117376-C Rev. 003-63 2.Enter the congestion-counter command and the value you want the interface to use:congestion-counter <

Configuring Frame Relay Services3-64117376-C Rev. 00Using Site ManagerTo enable congestion control:Site Manager ProcedureYou do this System responds1.

Customizing Frame Relay117376-C Rev. 003-65 Using Traffic Shaping with SVCsTo use traffic shaping, you set attributes or parameters specific to throug

Configuring Frame Relay Services3-66117376-C Rev. 00For example, the following command line sets a committed burst in value of 4,000 bits.svc-option/t

Customizing Frame Relay117376-C Rev. 003-67 The cir-in and cir-out attributes specify the requested incoming and outgoing throughput (kbits/second) wh

Configuring Frame Relay Services3-68117376-C Rev. 00For example, the following command line sets a cir-in-minimum value of 10,000 bits:svc-option/tron

Customizing Frame Relay117376-C Rev. 003-69 Using Site ManagerTo enable traffic shaping:Site Manager ProcedureYou do this System responds1. Click on t

Configuring Frame Relay Services3-70117376-C Rev. 00Using Data Compression with SVCsYou can use the BCC or Site Manager to set data compression for SV

Customizing Frame Relay117376-C Rev. 003-71 To disable compression:Setting X.213 Priorities for SVCsSome frame relay networks can prioritize SVC data

Configuring Frame Relay Services3-72117376-C Rev. 00Using the BCCThe X.213 priority commands adhere to ITU-T Q.933 and X.213. They are data-priority,

Customizing Frame Relay117376-C Rev. 003-73 For example, the following command line sets a data-priority of 9for SVC options:svc-options/toronto# data

Configuring Frame Relay Services3-74117376-C Rev. 00Deleting Frame RelayTo delete frame relay from a circuit on which it is currently configured:To de

Customizing Frame Relay117376-C Rev. 003-75 3. Click on Delete Frame Relay. A confirmation window prompts “Do you REALLY want to delete Frame Relay?”4

117376-C Rev. 00A-1 Appendix ASite Manager ParametersThese topics define frame relay parameters:Interface ParametersThe Frame Relay Interface List win

Configuring Frame Relay ServicesA-2117376-C Rev. 00Figure A-1. Frame Relay Interface List Window (for PVCs)If you have configured any SVCs, you see a

Site Manager Parameters117376-C Rev. 00A-3 Figure A-2. Frame Relay Interface List Window (for SVCs)To access the Frame Relay Interface List window:Sit

117376-C Rev. 00xv About This GuideIf you are responsible for configuring frame relay, you need to read this guide.Before You BeginBefore configuring

Configuring Frame Relay ServicesA-4117376-C Rev. 00Descriptions of Interface ParametersFrame Relay Interface parameters are the same for PVCs and SVCs

Site Manager Parameters117376-C Rev. 00A-5 Parameter: Mgmnt TypePath: Configuration Manager > Protocols > Frame Relay > InterfacesDefault: AN

Configuring Frame Relay ServicesA-6117376-C Rev. 00Parameter: AddressPath: Configuration Manager > Protocols > Frame Relay > InterfacesDefaul

Site Manager Parameters117376-C Rev. 00A-7 Parameter: Polling IntervalPath: Configuration Manager > Protocols > Frame Relay > InterfacesDefau

Configuring Frame Relay ServicesA-8117376-C Rev. 00Parameter: Error ThresholdPath: Configuration Manager > Protocols > Frame Relay > Interfac

Site Manager Parameters117376-C Rev. 00A-9 Parameter: MulticastPath: Configuration Manager > Protocols > Frame Relay > InterfacesDefault: Dis

Configuring Frame Relay ServicesA-10117376-C Rev. 00Parameter: Congestion TimerPath: Configuration Manager > Protocols > Frame Relay > Interf

Site Manager Parameters117376-C Rev. 00A-11 SVC LAPF ParametersIf you configure SVCs, LAPF parameters are important to your network. You can edit thes

Configuring Frame Relay ServicesA-12117376-C Rev. 00Figure A-3. FR LAPF Parameters WindowTo access the FR LAPF Parameters window:Site Manager Procedur

Site Manager Parameters117376-C Rev. 00A-13 Parameter: EnablePath: Configuration Manager > Protocols > Interfaces > LAPFDefault: EnableOption

Configuring Frame Relay Servicesxvi117376-C Rev. 00Conventionsbold textIndicates text that you need to enter, command names, and buttons in menu paths

Configuring Frame Relay ServicesA-14117376-C Rev. 00Parameter: Action InitiatePath: Configuration Manager > Protocols > Interfaces > LAPFDefa

Site Manager Parameters117376-C Rev. 00A-15 Parameter: T200, Base TimerPath: Configuration Manager > Protocols > Interfaces > LAPFDefault: 15

Configuring Frame Relay ServicesA-16117376-C Rev. 00Parameter: N200, Max RetriesPath: Configuration Manager > Protocols > Interfaces > LAPFDe

Site Manager Parameters117376-C Rev. 00A-17 SVC Signaling ParametersIf you configure SVCs, signaling parameters are important to your network. You can

Configuring Frame Relay ServicesA-18117376-C Rev. 00To access the Frame Relay Signaling Parameters window:Site Manager ProcedureYou do this System res

Site Manager Parameters117376-C Rev. 00A-19 Parameter: T303, Setup Message TimerPath: Configuration Manager > Protocols > Frame Relay > Inter

Configuring Frame Relay ServicesA-20117376-C Rev. 00Parameter: T308, Release TimerPath: Configuration Manager > Protocols > Frame Relay > Int

Site Manager Parameters117376-C Rev. 00A-21 Parameter: T322, Status Enq Retry TimerPath: Configuration Manager > Protocols > Frame Relay > In

Configuring Frame Relay ServicesA-22117376-C Rev. 00Parameters for PVCsThe following topics give information about configuring PVCs:Service Name Param

Site Manager Parameters117376-C Rev. 00A-23 Figure A-5. Frame Relay Service List Window (for PVCs)To access the Frame Relay Service List window:Site M

About This Guide117376-C Rev. 00xvii AcronymsANSI American National Standards InstituteARP Address Resolution ProtocolATM Asynchronous Transfer ModeBc

Configuring Frame Relay ServicesA-24117376-C Rev. 00Required DLCI Parameter for Each PVCThe Frame Relay PVC Add window (Figure A-6) contains the DLCI

Site Manager Parameters117376-C Rev. 00A-25 To access the Frame Relay PVC Add window:Site Manager ProcedureYou do this System responds1. Click on the

Configuring Frame Relay ServicesA-26117376-C Rev. 00PVC Service Record ParametersThe FR PVC List for Service window (Figure A-7) contains the PVC para

Site Manager Parameters117376-C Rev. 00A-27 To access the FR PVC List for Service window:Site Manager ProcedureYou do this System responds1. Click on

Configuring Frame Relay ServicesA-28117376-C Rev. 00Parameter: Hybrid ModePath: Configuration Manager > Protocols > Frame Relay > Services &g

Site Manager Parameters117376-C Rev. 00A-29 Parameter: ThroughputPath: Configuration Manager > Protocols > Frame Relay > Services > PVCsDe

Configuring Frame Relay ServicesA-30117376-C Rev. 00Parameter: Congestion TimerPath:Configuration Manager > Protocols > Frame Relay > Service

Site Manager Parameters117376-C Rev. 00A-31 Parameter: Congestion MethodPath: Configuration Manager > Protocols > Frame Relay > Services >

Configuring Frame Relay ServicesA-32117376-C Rev. 00Optional Algorithm Parameter for Each Multiline ConfigurationThe Services Multiline With window (F

Site Manager Parameters117376-C Rev. 00A-33 This window lets you:• Specify how a multiline circuit distributes traffic by setting the Multiline Algori

Configuring Frame Relay Servicesxviii117376-C Rev. 00OSI Open Systems InterconnectionPRI Primary Rate InterfacePVC permanent virtual circuitQoS qualit

Configuring Frame Relay ServicesA-34117376-C Rev. 00SVC Service Record ParametersThe following topics describe SVC service record parameters.:SVC Serv

Site Manager Parameters117376-C Rev. 00A-35 Figure A-10. Frame Relay Service List Window (for SVCs)To access the Frame Relay Service List window:Site

Configuring Frame Relay ServicesA-36117376-C Rev. 00Note: You do not have access to the SVC parameters until you set the SVC Support parameter to Enab

Site Manager Parameters117376-C Rev. 00A-37 Parameter: SVC Local Party Sub-AddressPath: Configuration Manager > Protocols > Frame Relay > Ser

Configuring Frame Relay ServicesA-38117376-C Rev. 00Parameter: SVC Call BlockPath: Configuration Manager > Protocols > Frame Relay > Services

Site Manager Parameters117376-C Rev. 00A-39 Parameter: SVC Inactivity TimerPath: Configuration Manager > Protocols > Frame Relay > Services D

Configuring Frame Relay ServicesA-40117376-C Rev. 00SVC Options ParametersYou can edit SVC Options parameters in the Frame Relay SVC Options Add windo

Site Manager Parameters117376-C Rev. 00A-41 Parameter: Options NamePath: Configuration Manager > Protocols > Frame Relay > Services > SVCs

Configuring Frame Relay ServicesA-42117376-C Rev. 00Parameter: Remote Party Number PlanPath: Configuration Manager (select a connector) > Edit Conn

Site Manager Parameters117376-C Rev. 00A-43 SVC Options List for Service ParametersWhen you have finished editing the Options parameters in the Option

About This Guide117376-C Rev. 00xix Information about customer service is also available on the World Wide Web at support.baynetworks.com.How to Get H

Configuring Frame Relay ServicesA-44117376-C Rev. 00Parameter: Broadcast ControlPath: Configuration Manager > Protocols > Frame Relay > Servi

Site Manager Parameters117376-C Rev. 00A-45 Parameter: X.213 Data PriorityPath: Configuration Manager > Protocols > Frame Relay > Services &g

Configuring Frame Relay ServicesA-46117376-C Rev. 00Parameter: X.213 Gain PriorityPath: Configuration Manager > Protocols > Frame Relay > Ser

Site Manager Parameters117376-C Rev. 00A-47 Parameter: X.213 Keep PriorityPath: Configuration Manager > Protocols > Frame Relay > Services &g

Configuring Frame Relay ServicesA-48117376-C Rev. 00Parameter: LL Core Out ThroughputPath: Configuration Manager > Protocols > Frame Relay >

Site Manager Parameters117376-C Rev. 00A-49 Parameter: LL Core Min In ThroughputPath: Configuration Manager > Protocols > Frame Relay > Servi

Configuring Frame Relay ServicesA-50117376-C Rev. 00Parameter: LL Core In Committed BurstPath: Configuration Manager (select a connector) > Edit Co

Site Manager Parameters117376-C Rev. 00A-51 Parameter: LL Core In Excess BurstPath: Configuration Manager (select a connector) > Edit Connector win

Configuring Frame Relay ServicesA-52117376-C Rev. 00Parameter: Congestion TimerPath: Configuration Manager (select a connector) > Edit Connector wi

Site Manager Parameters117376-C Rev. 00A-53 Parameter: Congestion MethodPath: Configuration Manager (select a connector) > Edit Connector window &g

ii117376-C Rev. 004401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821Copyright © 1998 Bay Networks, Inc.All rights re

Configuring Frame Relay Servicesxx117376-C Rev. 00Bay Networks Educational ServicesThrough Bay Networks Educational Services, you can attend classes a

Configuring Frame Relay ServicesA-54117376-C Rev. 00WHERE DOES THIS PARAMETER GO?Parameter: WCP EnablePath: Configuration Manager (select a connector)

117376-C Rev. 00B-1 Appendix BRIP Management for Frame Relay SVCsIP and IPX use RIP to inform network entities of routing topology changes. Both IP an

RIP Management for Frame Relay SVCs117376-C Rev. 00B-2 Table B-1. RIP ParametersIP or IPX RIP EnableIP or IPX RIP Frame Relay SVC Broadcast EnableFram

RIP Management for Frame Relay SVCs117376-C Rev. 00B-3 Enabled Enabled Both DirectionsInactivity < RIPWhen the RIP timer expires: • RIP packets wil

Configuring Frame Relay ServicesB-4117376-C Rev. 00Enabled Enabled EitherDirectionInactivity > RIPWhen the RIP timer expires: • RIP packets will be

RIP Management for Frame Relay SVCs117376-C Rev. 00B-5 Enabled Disabled EitherDirectionInactivity < RIPWhen the RIP timer expires:• RIP packets wil

RIP Management for Frame Relay SVCs117376-C Rev. 00B-6 Enabled Disabled Transmit Inactivity > RIPWhen the RIP timer expires:• RIP packets will be s

Configuring Frame Relay ServicesB-7117376-C Rev. 00Disabled Enabled or DisabledTransmit RIP timer not applicable, RIP is dis-abled.Not applicable, RIP

RIP Management for Frame Relay SVCs117376-C Rev. 00B-8 Enabled Enabled Receive Inactivity < RIPWhen the RIP timer expires:• RIP packets will be sen

117376-C Rev. 00C-1 Appendix CMonitoring Frame Relay UsingBCC show CommandsUse the BCC show frame-relay command to display configuration and statistic

117376-C Rev. 001-1 Chapter 1Starting Frame RelayThe quickest way to begin using frame relay on your network is to enable it with default values for a

Configuring Frame Relay ServicesC-2117376-C Rev. 00Commands for Frame Relay The show frame-relay <container> command displays information about

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-3 frame-relay statsshaping {low | normal | high | sum}-dlci-interface-service<dlci&

Configuring Frame Relay ServicesC-4117376-C Rev. 00show frame-relayThe show frame-relay <option> commands display configuration, state, and stat

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-5 summary [-state {enabled | disabled | error}] [-type {backup | normal | primary | de

Configuring Frame Relay ServicesC-6117376-C Rev. 00The output includes the following information:Interface The interface on which the frame relay circ

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-7 vcs [-dlci <dlci>] [-interface <name>] [-service <name>][-type {pv

Configuring Frame Relay ServicesC-8117376-C Rev. 00The output includes the following information:services [-interface <name>] [-service <name

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-9 The output includes the following information:shaping [-dlci <dlci>] [-interfa

Configuring Frame Relay ServicesC-10117376-C Rev. 00The output includes the following information:congestion [-dlci <dlci>] [interface <name&

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-11 The output contains the following information:Interface The interface on which the

Configuring Frame Relay Services1-2117376-C Rev. 00Preparing a Configuration FileTo prepare a configuration file:1.Create and save a configuration fil

Configuring Frame Relay ServicesC-12117376-C Rev. 00svcs {calls | priority | shaping} [-dlci <dlci>] [-interface <name>] [-service <nam

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-13 svcs priorityDisplays priority information for active frame SVCs. This command allo

Configuring Frame Relay ServicesC-14117376-C Rev. 00svcs shapingDisplays shaping information for active SVCs. This command allows for the following co

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-15 multiline {services | pvcs} [-dlci <dlci>] [-name <multiline_name>]Disp

Configuring Frame Relay ServicesC-16117376-C Rev. 00multiline pvcs Displays PVCs that are priority information for active frame relay SVCs. This comma

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-17 vcs [-dlci <dlci> [-interface <name>] [-service <name>][-type {pv

Configuring Frame Relay ServicesC-18117376-C Rev. 00shaping {high | normal | low | sum} [-dlci <dlci>] [-interface <name>][-service <na

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-19 dlcmi [-interface <name>]Displays inbound and outbound statistics for frame r

Configuring Frame Relay ServicesC-20117376-C Rev. 00lapf {receive | transmit | error | traffic} [-interface <name>]Displays LAPF receive, transm

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-21 lapf transmitDisplays LAPF transmit statistics for frame relay interfaces. This com

Starting Frame Relay117376-C Rev. 001-3 2.Configure a frame relay interface on the physical interface.To configure a frame relay interface on a physic

Configuring Frame Relay ServicesC-22117376-C Rev. 00lapf errorsDisplays LAPF error statistics for frame relay interfaces. This command allows for the

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-23 lapf traffic Displays LAPF traffic statistics for frame relay interfaces. This comm

Configuring Frame Relay ServicesC-24117376-C Rev. 00The output contains the following information:Interface Interface on which the SVC resides.Setup I

Monitoring Frame Relay Using BCC show Commands117376-C Rev. 00C-25 signalling transmitDisplays signalling transmit statistics for frame relay interfac

Configuring Frame Relay ServicesC-26117376-C Rev. 00errors [-interface <name>]Displays error statistics for frame relay interfaces. This command

117376-C Rev. 00Index-1Aaccess modes, 2-15Action Initiate parameter, A-14active state, 2-9addingPVCs, 3-14PVCs to a service record, 2-15service record

Index-2117376-C Rev. 00Ddatacompression, 2-21encryption, 2-21data compression, 3-70enabling, 3-32with traffic shaping, 2-30data link control identifie

117376-C Rev. 00Index-3Iinactivity timersetting, 3-57Inactivity Timer Mode parameter, A-44Inactivity Timer parameter, A-44inactivity timers, 2-34inact

Index-4117376-C Rev. 00Mmanagement protocols. See DLCMImanagement type, selecting, 3-2Max SVCs parameter, A-18Mgmnt Type parameter, A-5monitored event

117376-C Rev. 00Index-5Services Multiline With window, A-32signalingcall proceeding processing, 2-13call setup processing, 2-12, 2-13connect message p

Configuring Frame Relay Services1-4117376-C Rev. 00 rip ospf neighbor arp igmp relay ipx rip sap s

Index-6117376-C Rev. 00buffers, 2-32configuring committed burst, 2-30definition of, 2-23for SVCs, 2-27guidelines, 2-29monitoring statistics, 2-30overs

Starting Frame Relay117376-C Rev. 001-5 ipxwan rip sap static-route adjacent-host static-service route-filter s

Configuring Frame Relay Services1-6117376-C Rev. 00Configuring PVCs and SVCsYou configure permanent virtual circuits (PVCs) and switched virtual circu

Starting Frame Relay117376-C Rev. 001-7 Using Site ManagerTo configure a PVC:Configuring an SVCYou can configure SVCs using either the default service

Configuring Frame Relay Services1-8117376-C Rev. 00Using the BCCTo add an SVC to the default service record:1.Navigate to the frame-relay prompt.For e

Starting Frame Relay117376-C Rev. 001-9 Configuring Adjacent Hosts for an SVCAn adjacent host is a device on a locally attached network; it may or may

117376-C Rev. 00iiiBay Networks, Inc. Software License AgreementNOTICE: Please carefully read this license agreement before copying or using the acco

117376-C Rev. 002-1 Chapter 2Frame Relay OverviewThe following sections present an overview of frame relay.Topic PageIntroduction to Frame Relay 2-2Pe

Configuring Frame Relay Services2-2117376-C Rev. 00Introduction to Frame RelayFrame relay is a high-speed, packet-switching WAN protocol that connects

Frame Relay Overview117376-C Rev. 002-3 Frame relay assumes that networks use transmission lines with low error rates, such as digital transmission me

Configuring Frame Relay Services2-4117376-C Rev. 00SVCs provide true bandwidth-on-demand service that can be customized based on the application in us

Frame Relay Overview117376-C Rev. 002-5 Frame Relay PacketsFigure 2-2 illustrates the structure of a frame relay packet. The packet’s header field inc

Configuring Frame Relay Services2-6117376-C Rev. 00Figure 2-2. Frame Relay Header: 2-Byte FormatFigure 2-2 shows the frame relay header as a 2-byte st

Frame Relay Overview117376-C Rev. 002-7 Management ProtocolsFrame relay is an access protocol that runs between a router or data terminal equipment (D

Configuring Frame Relay Services2-8117376-C Rev. 00Be sure to configure the frame relay interface on the router to use the same management protocol as

Frame Relay Overview117376-C Rev. 002-9 The link access procedure, frame mode (LAPF) layer defines five unnumbered control frames and three numbered s

iv117376-C Rev. 00its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files,

Configuring Frame Relay Services2-10117376-C Rev. 00LAPF Timeout and Retransmission TimersTable 2-2 lists the timers and retransmission limits defined

Frame Relay Overview117376-C Rev. 002-11 The supervisory frames, RNR and RR, support flow control on the channel. If the receiver is not ready to rece

Configuring Frame Relay Services2-12117376-C Rev. 00Call SetupA frame relay SVC is established using the frame relay signaling protocol between the su

Frame Relay Overview117376-C Rev. 002-13 Message ProcessingTable 2-4 shows how the router software handles various types of message exchanges.Table 2-

Configuring Frame Relay Services2-14117376-C Rev. 00Frame Relay Service RecordsBay Networks uses service records to define frame relay circuits. A ser

Frame Relay Overview117376-C Rev. 002-15 Multiple Service RecordsInterfaces can have multiple service records, and each service record can contain mul

Configuring Frame Relay Services2-16117376-C Rev. 00Direct Access ModeDirect mode describes a service record with one PVC. In direct access mode, uppe

Frame Relay Overview117376-C Rev. 002-17 Figure 2-6. Hybrid Mode Configuration, Non-Fully Meshed NetworkUsing Hybrid Mode for Transparent BridgingFig

Configuring Frame Relay Services2-18117376-C Rev. 00In this example, the bridge receives data from site A. If the bridge does not recognize the destin

Frame Relay Overview117376-C Rev. 002-19 To reduce broadcast traffic for all protocols, you can configure static routes and adjacent hosts at the prot

117376-C Rev. 00 vContents About This GuideBefore You Begin ...

Configuring Frame Relay Services2-20117376-C Rev. 00Traffic ControlFrame relay is unreliable. It does not include error recovery mechanisms, relying i

Frame Relay Overview117376-C Rev. 002-21 Data CompressionYou can configure both hardware- and software-based data compression over WANs running frame

Configuring Frame Relay Services2-22117376-C Rev. 00When you select frame relay on a circuit, the router enables protocol prioritization automatically

Frame Relay Overview117376-C Rev. 002-23 If you enable the congestion control feature, you can specify the number of FECN/BECN bits the router receive

Configuring Frame Relay Services2-24117376-C Rev. 00CIR of 0You can contract with a carrier for a CIR of 0, which yields best-effort service at low co

Frame Relay Overview117376-C Rev. 002-25 The sum of the Bc and the Be is the maximum amount of traffic that can travel across the network per Tc when

Configuring Frame Relay Services2-26117376-C Rev. 00Figure 2-10. Traffic Shaping QueuesShaping LMI(Interrupt)HighNormal LowHighNormal LowTransmit queu

Frame Relay Overview117376-C Rev. 002-27 All traffic that goes to a traffic-shaped VC (VC1 or VC2) is queued as high, normal, or low priority at the V

Configuring Frame Relay Services2-28117376-C Rev. 00• You can set the SVC Traffic Shaping Disable attribute or parameter to Enable, and provide values

Frame Relay Overview117376-C Rev. 002-29 Setting Minimum Acceptable ThroughputThroughput that an SVC actually uses may be less than it requests becaus

vi117376-C Rev. 00Frame Relay SVC Signaling and LAPF ...2-8LAPF Operational S

Configuring Frame Relay Services2-30117376-C Rev. 00CIR Configuration GuidelinesConsider the following when you configure traffic shaping.• In general

Frame Relay Overview117376-C Rev. 002-31 Using Traffic Shaping with Data CompressionTraffic shaping occurs at the VC level; compression, at the driver

Configuring Frame Relay Services2-32117376-C Rev. 00Oversubscribing the InterfaceThe CIRs that you configure are based on an average peak rate for the

Frame Relay Overview117376-C Rev. 002-33 The parameters you can customize at the VC level are:• wfFrCircuitShapedHiQueueLimit.• wfFrCircuitShapedNorma

Configuring Frame Relay Services2-34117376-C Rev. 00X.213 Priority for SVCsSome frame relay networks that support SVCs can prioritize SVC data and con

Frame Relay Overview117376-C Rev. 002-35 Transmit Inactivity Timer and Protocol Priority No-Reset FilterA Protocol Priority filter with a No-Reset act

Configuring Frame Relay Services2-36117376-C Rev. 00In this example, when the router receives traffic destined for the network, it alternates or rando

Frame Relay Overview117376-C Rev. 002-37 Random balancing evenly distributes traffic and lets the router use the two lines efficiently. Because packet

Configuring Frame Relay Services2-38117376-C Rev. 00Figure 2-13. PVC Pass-ThroughFigure 2-13 shows a router with an Ethernet interface, and two frame

Frame Relay Overview117376-C Rev. 002-39 Configuring Synchronous Lines for Frame RelayIf you enable frame relay on a circuit, Site Manager automatical

117376-C Rev. 00viiTraffic Shaping for SVCs ...2-27Request

Configuring Frame Relay Services2-40117376-C Rev. 00FRF.4, Frame Relay User-to-Network SVC Implementation Agreement, January 5, 1994, plus Attachments

117376-C Rev. 003-1 Chapter 3Customizing Frame RelayWhen you enable frame relay, default values are in effect for all Bay Command Console (BCC) attrib

Configuring Frame Relay Services3-2117376-C Rev. 00Selecting a Management TypeYou can specify the management protocol that the router and the frame re

Customizing Frame Relay117376-C Rev. 003-3 Using the BCCTo specify a management protocol:1.Navigate to the dlcmi prompt.For example:box; serial/1/2; f

Configuring Frame Relay Services3-4117376-C Rev. 00Selecting Address Type and LengthYou can specify the data link connection identifier (DLCI) address

Customizing Frame Relay117376-C Rev. 003-5 Using the BCCTo specify address type and length:Address TypeTo specify the address type:1.Navigate to the f

Configuring Frame Relay Services3-6117376-C Rev. 00For example, the following command line sets the address length to 4 bytes:frame-relay/1/2# address

Customizing Frame Relay117376-C Rev. 003-7 Polling IntervalThe polling interval specifies the interval between status inquiry messages that the router

Configuring Frame Relay Services3-8117376-C Rev. 00For example, if you accept the default of 3 for the error threshold, and the default of 4 for monit

Customizing Frame Relay117376-C Rev. 003-9 Full Enquiry IntervalTo set the full enquiry interval:1.Navigate to the dlcmi prompt.For example:box; frame

viii117376-C Rev. 00Address Type ...3-5Address Leng

Configuring Frame Relay Services3-10117376-C Rev. 00Monitored EventsTo set monitored events:1.Navigate to the dlcmi prompt.For example:box; serial/1/2

Customizing Frame Relay117376-C Rev. 003-11 Setting XOFF ControlYou configure the router to ignore or observe the XOFF bit in LMI by using the BCC to

Configuring Frame Relay Services3-12117376-C Rev. 00Adding Service Records for PVCsA service record is a data structure that allows flexible grouping

Customizing Frame Relay117376-C Rev. 003-13 Deleting Service Records for PVCsYou can use either the BCC or Site Manager to delete service records for

Configuring Frame Relay Services3-14117376-C Rev. 00Using Site ManagerAdding PVCs to Service RecordsYou can use either the BCC or Site Manager to add

Customizing Frame Relay117376-C Rev. 003-15 To add more than one PVC:1.Navigate to the service record to which you want to add PVCs.For example:box; s

Configuring Frame Relay Services3-16117376-C Rev. 00Deleting PVCs from Service RecordsYou can delete PVCs from already existing service records. After

Customizing Frame Relay117376-C Rev. 003-17 Using Site ManagerTo delete PVCs:Moving PVCs from One Service Record to AnotherYou can use Site Manager to

Configuring Frame Relay Services3-18117376-C Rev. 00Enabling MulticastThe multicast feature sets up a separate DLCI that replicates broadcast packets

Customizing Frame Relay117376-C Rev. 003-19 4.Enter the multicast-control command and the value enabled:multicast-control enabledFor example, the foll

117376-C Rev. 00ixCall Screening and Blocking ...3-38SVC Call Block Dir

Configuring Frame Relay Services3-20117376-C Rev. 00Configuring Hybrid Mode for PVCsHybrid mode allows you to use the same PVCs for both routing and b

Customizing Frame Relay117376-C Rev. 003-21 To configure PVC pass-through: Site Manager ProcedureYou do this System responds1. Configure at least two

Configuring Frame Relay Services3-22117376-C Rev. 00Controlling Congestion for PVCsCongestion occurs when a node receives more frames than it can proc

Customizing Frame Relay117376-C Rev. 003-23 Configuring Congestion Control for an InterfaceTo configure congestion control for the interface you must

Configuring Frame Relay Services3-24117376-C Rev. 00For example, the following command line sets a congestion timerof 2.5 seconds:frame-relay/1/2# con

Customizing Frame Relay117376-C Rev. 003-25 Congestion MethodTo change the value for the congestion method:1.Navigate to the prompt for the interface

Configuring Frame Relay Services3-26117376-C Rev. 00For example, the following command line enables congestion control for this frame relay interface:

Customizing Frame Relay117376-C Rev. 003-27 2.Enter the congestion-counter command and the value you want the interface to use:congestion-counter <

Configuring Frame Relay Services3-28117376-C Rev. 00Using Site ManagerYou can enable congestion control for the interface, and you can also customize

Customizing Frame Relay117376-C Rev. 003-29 Using Traffic Shaping With PVCsTraffic shaping relieves bottlenecks in networks. To enhance the effectiven