Avaya Configuring PPP Services User Manual

Part No. 117360-A Rev. ASeptember 1997Router Software Version 12.00Site Manager Software Version 6.00 Configuring PPP Services

Configuring PPP ServicesA-2 117360-A Rev. APPP Interface Parameter DescriptionsUse the following guidelines to configure the PPP Interface parameters.

PPP Parameters117360-A Rev. A A-3Parameter: IP EnablePath: Protocols > PPP > InterfacesDefault: If you enable IP support when you configure PPP o

Configuring PPP ServicesA-4 117360-A Rev. AParameter: XNS EnablePath: Protocols > PPP > InterfacesDefault: If you enable XNS support when you co

PPP Parameters117360-A Rev. A A-5Parameter: AppleTalk EnablePath: Protocols > PPP > InterfacesDefault: If you enable AppleTalk support when you

Configuring PPP ServicesA-6 117360-A Rev. AParameter: Bridge EnablePath: Protocols > PPP > InterfacesDefault: If you enable the bridge when you

PPP Parameters117360-A Rev. A A-7Parameter: CCP EnablePath: Protocols > PPP > InterfacesDefault: If you enable data compression when you configur

Configuring PPP ServicesA-8 117360-A Rev. AParameter: Remote IP AddressPath: Protocols > PPP > InterfacesDefault: 0.0.0.0Options: Any valid IP a

PPP Parameters117360-A Rev. A A-9Parameter: IPX Remote Node NumberPath: Protocols > PPP > InterfacesDefault: NoneOptions: Any valid IPX node num

Configuring PPP ServicesA-10 117360-A Rev. AParameter: AppleTalk Routing ProtocolPath: Protocols > PPP > InterfacesDefault: RTMPOptions: RTMP (R

PPP Parameters117360-A Rev. A A-11Parameter: Bridge FDDIPath: Protocols > PPP > InterfacesDefault: EnableOptions: Enable | DisableFunction: Spec

117360-A Rev. A xi Tables Table 1-1. PPP Configurable Functions ...1-2Table 2-2. Samp

Configuring PPP ServicesA-12 117360-A Rev. AParameter: PPP ModePath: Protocols > PPP > InterfacesDefault: Multilink for a dial-on-demand or band

PPP Parameters117360-A Rev. A A-13PPP Line Parameter DescriptionsUse the following guidelines to configure the PPP Lines parameters. The order of prese

Configuring PPP ServicesA-14 117360-A Rev. AFigure A-2. Site Manager PPP Line Lists WindowParameter: Enable (LCP)Path: Protocols > PPP > Interfa

PPP Parameters117360-A Rev. A A-15Parameter: Restart Timer in SecondsPath: Protocols > PPP > Interfaces > LinesDefault: 3 (seconds)Range: 1 t

Configuring PPP ServicesA-16 117360-A Rev. AParameter: Max Configure-RequestsPath: Protocols > PPP > Interfaces > LinesDefault: 10 (packets)Ra

PPP Parameters117360-A Rev. A A-17Parameter: Max Configuration Failure CountPath: Protocols > PPP > Interfaces > LinesDefault: 10Range: 1 thro

Configuring PPP ServicesA-18 117360-A Rev. AParameter: Local Authentication ProtocolPath: Protocols > PPP > Interfaces > LinesDefault: CHAP f

PPP Parameters117360-A Rev. A A-19Parameter: Local PAP IDPath: Protocols > PPP > Interfaces > LinesDefault: NoneOptions: Any text string; max

Configuring PPP ServicesA-20 117360-A Rev. AParameter: Remote PAP IDPath: Protocols > PPP > Interfaces > LinesDefault: NoneOptions: Any text

PPP Parameters117360-A Rev. A A-21Parameter: Enable PAP FallbackPath: Protocols > PPP > Interfaces > LinesDefault: DisableOptions: Enable | D

Configuring PPP ServicesA-22 117360-A Rev. AParameter: Peer Link Quality Report TimerPath: Protocols > PPP > Interfaces > LinesDefault: Enabl

PPP Parameters117360-A Rev. A A-23Parameter: Inbound Link QualityPath: Protocols > PPP > Interfaces > LinesDefault: 90 (percent)Range: 0 thro

Configuring PPP ServicesA-24 117360-A Rev. AParameter: CHAP SecretPath: Protocols > PPP > Interfaces > LinesDefault: NoneOptions: Any text st

PPP Parameters117360-A Rev. A A-25Parameter: CHAP Periodic TimerPath: Protocols > PPP > Interfaces > LinesDefault: 0 (disabled)Options: Any n

Configuring PPP ServicesA-26 117360-A Rev. AParameter: Async Control Character MapPath: Protocols > PPP > Interfaces > LinesDefault: 655360Ra

PPP Parameters117360-A Rev. A A-27Parameter: Authentication TimerPath: Protocols > PPP > Interfaces > LinesDefault: 10Range: 1 through 1000 (

Configuring PPP ServicesA-28 117360-A Rev. AParameter: MRU Size (bytes)Path: Protocols > PPP > Interfaces > LinesDefault: 1500Options: 1 to 4

117360-A Rev. A B-1Appendix BDefault PPP ConfigurationThe PPP default configuration depends on which protocols you enable for the interface. Table 1 and

Configuring PPP ServicesB-2 117360-A Rev. APPP Mode Normal for a nonmultilink circuitMultilink for a multilink circuitMultilink Fragmentation Permitte

Default PPP Configuration117360-A Rev. A B-3LQR Reporting Period 3 Inbound Link Quality 90Outbound Link Quality 90CHAP Secret NoneCHAP Local Name None

117360-A Rev. A xiii About This Guide If you are responsible for configuring PPP on a Bay Networks ® router, you need to read this guide.You can now

117360-A Rev. A C-1Appendix CPPP StatisticsTable 1 summarizes the PPP statistics you can view from the Site Manager Statistics Manager tool or from th

Configuring PPP ServicesC-2 117360-A Rev. AwfPppMlStatsReSeqBufferCnt Number of multilink packets currently stored in the ReSequencing buffer poolwfPp

117360-A Rev. A Index-1Aadding interfaces, 1-3addressIP, remote peer, 3-4AFN, 2-13allow PAP reject, 3-29Allow PAP Reject parameter, A-25AN, 2-13, 2-23

Index-2 117360-A Rev. ACCCP, 3-9CCP Enable parameter, A-7, B-1Challenge Handshake Authentication Protocol (CHAP), 2-3, 2-8, 2-11, 3-24customizing, 3-2

117360-A Rev. A Index-3PPP support, 2-10dial-on-demand, 2-11, A-24implementation notes, 2-17dial-up linePPP support, 2-10See also dial servicesdiffere

Index-4 117360-A Rev. ALCP. See also link control protocolleased line, 2-12Line Lists window, A-13line parameters, A-13configurable with BCC, 3-14line

117360-A Rev. A Index-5link quality, 2-20PPP links, 2-20MRUcompatibility with CLAM and earlier versions, 3-39MRU Size parameter, A-28multiline, 2-12co

Index-6 117360-A Rev. APassword Authentication Protocol (PAP), 2-8, 2-11, 3-24setting parameters, A-18peerdefinition, 2-13IP address, 3-4Peer Link Qual

117360-A Rev. A Index-7secret, CHAP, 3-30Service synchronous line parameter, 2-24setting remote address, 3-4single-line (Normal), specifying, A-12Site

Configuring PPP Servicesxiv 117360-A Rev. A • Connect the router to the network and create a pilot configuration file (refer to Quick-Starting Routers

wfPppMlStatsHomeSlot, C-1wfPppMlStatsLineCnt, C-1wfPppMlStatsLinkIdleEvents, C-2wfPppMlStatsNumPktsFragmented, 3-42, C-2wfPppMlStatsReasmBufferMax, 3-

About This Guide 117360-A Rev. A xv italic text Indicates variable values in command syntax descriptions, new terms, file and directory names, and bo

Configuring PPP Servicesxvi 117360-A Rev. A IPXCP IPX Control ProtocolLAN local area networkLCP link control protocolLQM link quality monitoringLQR

About This Guide 117360-A Rev. A xvii The Bay Networks Press catalog is available on the World Wide Web at support.baynetworks.com/Library/GenMisc

Configuring PPP Servicesxviii 117360-A Rev. A If you purchased a Bay Networks service program, call one of the following Bay Networks Technical Solut

117360-A Rev. A 1-1 Chapter 1Starting PPP Services What’s in This Chapter PPP is a standard point-to-point protocol for sending data packets over ser

ii 117360-A Rev. A4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1997 Bay Networks, Inc. All rights

Configuring PPP Services1-2 117360-A Rev. A Summary of PPP Services You can configure PPP to perform the functions shown in the following table. A che

Starting PPP Services 117360-A Rev. A 1-3 Starting Configuration ToolsBefore configuring PPP services, refer to the following user guides for instructi

Configuring PPP Services1-4 117360-A Rev. AStarting PPP ServicesWhen you add a PPP circuit, it is automatically enabled. To let data flow over this int

Starting PPP Services117360-A Rev. A 1-5Disabling and Reenabling PPP ServicesAfter changing certain PPP line parameters, you must force renegotiation

Configuring PPP Services1-6 117360-A Rev. ADeleting PPP ServicesYou can delete PPP from a specific circuit by simply reconfiguring that circuit with a d

Starting PPP Services117360-A Rev. A 1-7When you delete PPP globally, PPP no longer operates on the router. Be aware that the BCC software does not as

117360-A Rev. A 2-1 Chapter 2PPP ConceptsThis chapter describes PPP concepts that can help you decide how to customize the PPP parameters for your sys

Configuring PPP Services2-2 117360-A Rev. APPP OverviewPoint-to-Point Protocol (PPP) is a standard method of routing or bridging datagrams between pee

PPP Concepts117360-A Rev. A 2-3 Table 2-2. Sample Data Link Control Protocol OptionsOption FunctionMaximum Receive Unit Specifies the maximum receive u

117360-A Rev. A iii Bay Networks, Inc. Software License Agreement NOTICE: Please carefully read this license agreement before copying or using the

Configuring PPP Services2-4 117360-A Rev. ARouting over a PPP LinkYou can enable the following protocols over PPP interfaces:• AppleTalk• DECnet Phase

PPP Concepts117360-A Rev. A 2-5 The protocol that you selected when you first enabled PPP on the circuit is enabled by default. You can enable a differ

Configuring PPP Services2-6 117360-A Rev. AFor example, a configure-request packet may specify the link’s maximum transmission unit (MTU) size and whet

PPP Concepts117360-A Rev. A 2-7 Figure 2-2 demonstrates how a PPP interface initializes.Figure 2-2. Initializing the PPP InterfaceRouter A Router BPPP

Configuring PPP Services2-8 117360-A Rev. AAuthenticating the PPP Link: PAP and CHAP In the authentication phase of PPP initialization, one or both pe

PPP Concepts117360-A Rev. A 2-9 One-Way AuthenticationOne-way authentication uses an authentication protocol on only one side of a dial-up connection.

Configuring PPP Services2-10 117360-A Rev. ADatagram EncapsulationBefore transmitting data across the link, PPP encapsulates data in a frame similar t

PPP Concepts117360-A Rev. A 2-11 PPP is automatically configured on lines that you select for dial services. PPP, with either CHAP or PAP, implements a

Configuring PPP Services2-12 117360-A Rev. APPP MultilineBay Networks PPP services include support for the multiline feature, which lets you configure

PPP Concepts117360-A Rev. A 2-13 Multilink is available on all platforms that have more than one WAN line, including the following platforms:• BLN®/BC

iv 117360-A Rev. A its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files

Configuring PPP Services2-14 117360-A Rev. AFigure 2-4 shows a configuration that uses the multilink feature. Figure 2-4. Multilink CircuitAs Figure 2-

PPP Concepts117360-A Rev. A 2-15 Multilink and Multiline Compatibility with Previous VersionsA multiline circuit using PPP cannot communicate with a r

Configuring PPP Services2-16 117360-A Rev. AUsing Multilink FragmentationBy default, PPP multilink allows packet fragmentation. With fragmentation ena

PPP Concepts117360-A Rev. A 2-17 Packets sent over a multilink bundle have an outer header packet that contains a unique packet sequence number and al

Configuring PPP Services2-18 117360-A Rev. ADifferences between Multiline and MultilinkBoth multiline and multilink use circuits consisting of one or

PPP Concepts117360-A Rev. A 2-19 Media supported • Synchronous• T1/E1• MCE1/MCT1• HSSI• Synchronous• T1/E1• MCE1/MCT1• ISDN B-channel drivers• Raise-D

Configuring PPP Services2-20 117360-A Rev. AMonitoring PPP Link QualityTo ensure that the router can successfully transfer data, PPP monitors the qual

PPP Concepts117360-A Rev. A 2-21 For example, in Figure 2-5, the acceptable outbound and inbound link quality configured on router A for the PPP interf

Configuring PPP Services2-22 117360-A Rev. AIn addition to LQR packets, PPP periodically transmits echo-request packets (when echo-request is enabled)

PPP Concepts117360-A Rev. A 2-23 Synchronous versus Asynchronous Connections When you configure a dial (switched) circuit, you can specify whether you

117360-A Rev. A v Contents About This Guide Before You Begin ...

Configuring PPP Services2-24 117360-A Rev. ADuring LCP negotiation, both peers negotiate the characters that they will recognize as modem control char

PPP Concepts117360-A Rev. A 2-25 Configuring IP to Run over PPP InterfacesWhen you enable numbered Internet Protocol (IP) support on a PPP interface, y

Configuring PPP Services2-26 117360-A Rev. AVersion 5.x router software uses a Bay Networks proprietary implementation of PPP. Version 7.x, Version 8.

PPP Concepts117360-A Rev. A 2-27 PPP InteroperabilityThe Bay Networks implementation of PPP conforms to the RFCs listed in the previous section; there

117360-A Rev. A 3-1 Chapter 3Customizing PPPThis chapter describes how to customize and enable PPP services. It assumes you have configured PPP on the

Configuring PPP Services3-2 117360-A Rev. AEnabling DECnet IV Support on This Interface Chapter 3-9Enabling Data Compression on This Interface Chapter

Customizing PPP117360-A Rev. A 3-3 Enabling PPP on an InterfaceIf you have already enabled PPP on the circuit that you want to configure, go to “Settin

Configuring PPP Services3-4 117360-A Rev. ASetting Up Remote AddressesUsing Site Manager, you can define an address and node number (depending on the r

Customizing PPP117360-A Rev. A 3-5 Beginning at the Configuration Manager window, complete the tasks in the following table to specify an IP address fo

vi 117360-A Rev. A Datagram Encapsulation ...2-10PPP Dia

Configuring PPP Services3-6 117360-A Rev. ATo specify an IPX network number and remote node number, do the tasks in the following table.Configuring App

Customizing PPP117360-A Rev. A 3-7 To specify an AppleTalk Node Number and the AppleTalk Routing Protocol, do the tasks in the following table.Enablin

Configuring PPP Services3-8 117360-A Rev. AWith the bridging feature enabled, you can then enable or disable bridging for particular encapsulation typ

Customizing PPP117360-A Rev. A 3-9 To enable or disable VINES support on this interface, do the tasks in the following table.Enabling DECnet IV Suppor

Configuring PPP Services3-10 117360-A Rev. AEnabling Data Compression on This InterfaceIf you enabled data compression when you initially configured th

Customizing PPP117360-A Rev. A 3-11 This parameter enables or disables the network control protocol for IPv6. It does not enable or disable IPv6 routi

Configuring PPP Services3-12 117360-A Rev. AFor a description of the differences between multiline and multilink connections, see “Differences between

Customizing PPP117360-A Rev. A 3-13 Configuring Data EncryptionBay Networks offers software-based data encryption services for PPP dedicated links for

Configuring PPP Services3-14 117360-A Rev. AUsing the BCCNavigate to the IP prompt and enterstate disableFor example, the following command disables I

Customizing PPP117360-A Rev. A 3-15 You can configure or modify all the PPP line parameters using Site Manager, but only a subset using BCC. Table 2 li

117360-A Rev. A viiEnabling VINES Support on This Interface ...3-8Enabling DECnet I

Configuring PPP Services3-16 117360-A Rev. A• Remote PAP ID• Remote PAP Password• Link Quality Protocol• Peer Link Quality Report Timer• LQR Reporting

Customizing PPP117360-A Rev. A 3-17 To force link renegotiation on this PPP interface, do the tasks in the following table.Enabling Link Control on a

Configuring PPP Services3-18 117360-A Rev. ATo disable LCP on this interface, set Enable (LCP) parameter to Disable. To reenable LCP, set this paramet

Customizing PPP117360-A Rev. A 3-19 Specifying the Interval between Echo-Request PacketsThe value of the Seconds between Xmit of Echo-Request paramete

Configuring PPP Services3-20 117360-A Rev. ASpecifying the Acceptable Level of Echo-Reply Packet LossThe Echo-Reply Acceptable Loss parameter specifies

Customizing PPP117360-A Rev. A 3-21 Specifying the Maximum Number of Configure-Request PacketsThe Max Configure-Requests parameter specifies the maximum

Configuring PPP Services3-22 117360-A Rev. ASpecifying the Maximum Number of Terminate-Request PacketsPPP uses the Maximum Terminate-Requests paramete

Customizing PPP117360-A Rev. A 3-23 Specifying the Maximum Configuration Failure CountThe Max Configuration Failure Count parameter specifies the maximum

Configuring PPP Services3-24 117360-A Rev. AUsing Site ManagerTo set the maximum number of configure-NAK packets allowed on this interface, do the task

Customizing PPP117360-A Rev. A 3-25 Customizing PPP Authentication ParametersPPP imposes network security by offering support for two types of authent

viii 117360-A Rev. A Specifying the Link Quality Reporting Period ...3-33Specifying the Inbound Link

Configuring PPP Services3-26 117360-A Rev. AIf you do not want to enable security features on this interface, accept the default, None. To enable Pass

Customizing PPP117360-A Rev. A 3-27 Setting a Time Limit for AuthenticationYou can specify the maximum number of seconds the router waits for a respon

Configuring PPP Services3-28 117360-A Rev. ASpecifying Local PAP ParametersIf you did not enable PAP on the local peer, ignore the local PAP parameter

Customizing PPP117360-A Rev. A 3-29 Specifying PAP Parameters for the Remote PeerIf the remote peer does not have PAP enabled, ignore the remote PAP p

Configuring PPP Services3-30 117360-A Rev. AAllowing PAP RejectionSome peers do not use PAP. If you set the Allow PAP Reject parameter to Enable, your

Customizing PPP117360-A Rev. A 3-31 Specifying the CHAP SecretIf you have enabled CHAP, specify the secret. There is no default value. The function of

Configuring PPP Services3-32 117360-A Rev. AConfiguring PPP Interoperability with CLAMIf you configure a CHAP local name on a Bay Networks router that c

Customizing PPP117360-A Rev. A 3-33 By default, link quality monitoring is disabled. If you do not want to enable this feature, accept the default val

Configuring PPP Services3-34 117360-A Rev. AThe peer whose timer is enabled generates one LQR packet for each interval specified in the LQR Reporting P

Customizing PPP117360-A Rev. A 3-35 Using the BCC1. Enable link quality monitoring.Enabling link quality monitoring on the interface allows all the ot

117360-A Rev. A ix Figures Figure 2-1. Point-to-Point Network Connection ...2-2Figure 2-2. In

Configuring PPP Services3-36 117360-A Rev. A5. Set the outbound link quality.To specify the outbound link quality, enter the following command after s

Customizing PPP117360-A Rev. A 3-37 Using Site ManagerTo configure link quality monitoring on this PPP interface, do the tasks in the following table.S

Configuring PPP Services3-38 117360-A Rev. AThe async control character map specifies a value representing one or more asynchronous modem control chara

Customizing PPP117360-A Rev. A 3-39 Disabling Loopback CheckingFor test purposes, you can disable the loopback test that the peer normally performs as

Configuring PPP Services3-40 117360-A Rev. AUsing Site ManagerTo disable loopback checking for this line, do the tasks in the following table.Setting

Customizing PPP117360-A Rev. A 3-41 • As you upgrade each remote-site router software to Version 11.02 (or later), set its MRU value to 1590, unless y

Configuring PPP Services3-42 117360-A Rev. AViewing Line Statistics for Multilink CircuitsTo view the statistics that PPP collects for multilink circu

Customizing PPP117360-A Rev. A 3-43 • In the wfPppMlStatsEntry MIB:-- wfPppMlStatsReSeqBufferCnt is the current count of packets (not fragments) that

-- wfPppMlStatsExceededBufferMax indicates the number of times the sum of wfPppMlStatsReassmBufferCnt and wfPppMlStatsReSeqBufferCnt exceeded the spec

117360-A Rev. A A-1Appendix APPP ParametersThis appendix lists the parameters for the PPP interfaces that you can configure on the router. For each PPP