PPP over Sonet, PPP and Hdlc | Nortel Networks 3500, NTRN10AN

Operation, administration, and maintenance (OAM) features 2-67

There is no flow control support on the LAN and the WAN, and no policing and shaping is performed. Received PAUSE frames are discarded or passed through, depending on the value of the PASSCTRL attribute. By default, PAUSE frames are discarded.

PPP over SONET

The Point-to-Point Protocol (PPP) was designed as a standard method of communicating over point-to-point links. PPP is defined in RFC 1661 and RFC 1662. RFC 2615 specifies POS (PPP over SONET/SDH), the method for encapsulating PPP in SONET. PPP is comprised of three main components:

•A method for encapsulating multi-protocol datagrams.

•A Link Control Protocol (LCP) for establishing, configuring, and testing the data-link connection.

•A family of Network Control Protocols (NCPs) for establishing and configuring different network-layer protocols.

PPPand HDLC

PPPis built from a subset of the standard HDLC protocol. HDLC supports configurable ‘Address’ and ‘Control’ fields but PPP is restricted to fixed values in the ‘Address’ and ‘Control’ fields. For an illustration of the PPP packet format, please see Figure 2-35 on page 2-69.

The Information Field of the PPP frame will have a maximum size of 1592 bytes.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

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Nortel Networks 3500, NTRN10AN manual PPP over Sonet, PPP and Hdlc

Contents

OPTera Metro 3500 Multiservice Platform Copyright  2000-2004 Nortel Networks, All Rights Reserved Contents Iv Contents Contents Hardware feature descriptions Contents Page Supported software Standards Supported hardware Hardware naming conventionsAudience NTRN16AA OPTera Metro 3500 NTP library Global software upgrade support North America For non-service-affecting problems North AmericaTechnical support and information International Network element overview Overview Loam Loam Release 12.1 features In-service reconfigurations Dwdm Services DS1DS3 8Overview Overview Performance monitoring Security and administration Bandwidth management Miscellaneous Blsr 14Overview Overview Platforms with STX VTX-series Circuit packs Release 12.1 Hardware Compatibility Matrix OC-3x4 Yes 18Overview Supported configurations Upsr Linear Spur OC-48 OC-3 Requires dual slot circuit OC-12 Pack 22Overview VTX-48e Linear pt-to-pt or OC-12 ADM chain OC-3 24Overview Interworking Supported upgrade paths New or enhanced OAM features in OPTera Metro 3500 Release Operation, administration, and maintenance OAM features OPTera Metro 3500 OAM features Gigabit Ethernet Drop and Continue P2P Gigabit Ethernet drop and continue application Engineering rules Alarm provisioning Alarm flow control Environmental alarms Bandwidth managementExternal controls Tributary, DWDM, BLSR, UPSR, and 1+1 linear point-to-point Connection editing In-service traffic rollover Blsr networks 2-fiber Switching matrixOPTera Metro STS or 5376 VT Protection User-initiated Blsr switching commands Automatically initiated Blsr switching requests ’Infinite wait-to-restore’ parameter Blsr single span fiber cut scenario Blsr Line Protection Oscillation Control Blsr single span Fiber cut example Step Action Node status ’Bridged and Switched’ 16Operation, administration, and maintenance OAM features UEQ Blsr ring switch example 18Operation, administration, and maintenance OAM features Node 1 and 2 state change detail Idle State 20Operation, administration, and maintenance OAM features EX1242p 22Operation, administration, and maintenance OAM features State Protection traffic 24Operation, administration, and maintenance OAM features Blsr nodal / multi-span failure scenario involves squelching 26Operation, administration, and maintenance OAM features OC-48 Blsr node failure example A-BC-B OC-192 Blsr node failure example Blsr configurations Blsr configuration attributesSTS paths and squelch map for a four-node 2-Fiber Blsr ring Blsr configuration and connection audit Blsr configuration distributionBlsr configuration audit Traffic flow over OC-48 Blsr Blsr connection auditSTS Blsr with VT assignment Traffic flow over OC-192 Blsr VT Blsr with full VT access Network Element a DS1 add/drop Provisioning rules Risk of traffic lossOC-48/OC-192 Blsr provisioning rules Rule # Description OC-48/OC-192 Blsr provisioning rules 36Operation, administration, and maintenance OAM features EX1294p 38Operation, administration, and maintenance OAM features West optics East optics IPTR-3 IPTR-2IPTR-4 IPTR-1 RPR over a Blsr and subtending Upsr example Upsr #2 Upsr #1 OAM supported on Blsr Channelized DS3 service DS3VTx12 mapper Changing the Blsr configuration / connection audit periodCommon Language Location Identifier Consolidated load Connection ID Dense wavelength division multiplexing Dwdm Band OPTera Metro 3500 bands OMX module OPTera Metro 3500 and OMX interconnect Network sites Dwdm configurations Hubbed-ring configurationPhysical connections in a hubbed-ring configuration Logical connections in a hubbed-ring configuration 3500 Meshed-ring configuration3500 3500 Physical connections in a meshed-ring configuration 3500 Logical connections in a meshed-ring configuration3500 Linear point-to-point Dwdm point-to-point configurationPhysical Connections 3500 3500 Logical Connections Loopbacks Facility attributesTerminal loopback Facility loopback Optical loopback Electrical Loopback typesOptical facility loopbacks OOS Facility loopbackAIS Optical terminal loopbacks Operation, administration, and maintenance OAM features Network surveillance Extended network processor NPx2x100BT-P2P loopback conditioning Single-ended Tbos Telemetry byte-oriented serial Tbos Remote alarm LED indicator Path traceTbos report format Section trace TID address resolution protocol Tarp OPTera Packet Edge System Resilient Packet Ring Ethernet Connectors Resilient packet ring shelf level Resilient packet ring RPR object 64Operation, administration, and maintenance OAM features RPR configuration alert Auto save notificationTraps 2x100BT-P2P circuit pack NNI Filters increased to PPP and Hdlc PPP over Sonet Hdlc STS1/3C PPP/BCP 2x100BT-P2P circuit pack model Network protection using UPSR, 1+1 linear and Blsr Bridge Control Protocol2x100BT-P2P logical datapath overview Ethernet Operational Measurements Oamp support Operation, administration, and maintenance OAM features Distributed multilink trunking Bandwidth Reservation Protocol BRPTDIs on a mapped UNI 2xGigE/FC-P2P circuit pack Optical Ethernet Private Line OE-PL and Storage applications SDH Alarm management Equipment alarms 76Operation, administration, and maintenance OAM features Ingress LAN port alarms Small Form Factor Pluggables SFP alarms For Fibre Channel facilities, this alarm Ingress LAN port alarms Alarm Description Severity For Fibre Channel facilities , this alarm Egress WAN port and service alarms LAN Ingress AlarmsLAN WAN LAN GFP Vcat SUBRATE=DISABLE 82Operation, administration, and maintenance OAM features Client Service Mismatch Bandwidth management LanwanContiguous concatenation Virtual concatenation Facility attributesEngineering rules Ethernet facility 86Operation, administration, and maintenance OAM features MTU Fibre Channel facility 88Operation, administration, and maintenance OAM features STS12C, STS24C Provunits WAN facility WAN GFP Supported on 2xGigE/FC-P2P Outframesdiscds Supported on 2xGigE/FC-P2P circuit Pack Alignerr 94Operation, administration, and maintenance OAM features Fibre Channel Extended Reach Performance MonitoringSES INFRAMESERR/INFRAME Inoctetserr UAS Storage over Sonet GFP and Flow Control Enable Distance Extension See Note Generic Framing Procedure and Virtual Concatenation support Generic Framing Procedure GFP60950 91430 182860 GFP FCS GFP Encapsulation Efficiency Rate Virtual Concatenation Vcat Optical interoperability of OPTera Metro Performance monitoringSonet line, section, and path parameters User defined default threshold values facility type Hard-coded default threshold values facility typeThreshold values User defined threshold values facility Line Path ES-P ES-PFESES-P SEFS-PFE SES-PFESAS-P SEFS-P FC-PFE FC-P Operation, administration, and maintenance OAM features Retrieving performance monitoring counts Physical PMs NTN445CB NTN408DANTN445DA NTN445JA Storage and retrieval of physical PMs Resetting registers and invalid data flag TCA summary alarms Performance monitoring threshold crossing alerts TCATCAs Alarms Site Manager support Preside Software Upgrade Management support Site Manager main window Preside Applications Platform and Multiservice MOA support Protection switching Protection hierarchy 120Operation, administration, and maintenance OAM features Protection PM in a Blsr configuration Protection PM in a linear 1+1 configuration Local account user authentication Security and administration Local ‘challenge-response’ user authentication Risk of unauthorized access Centralized Security Administration CSA Operation, administration, and maintenance OAM features Time s Server ’Access-Request’ ’Access-Accept’ ’Access-Reject’ SecurID support Secure storage of authentication data Local TL1 of provisioning data Saving and restoring provisioning dataSpan of control Individual shelf processor Application of TL1 commands from a TL1 script file Security levelsLevel System identifier SID Multiple login sessions Remote login SPx login sessions NPx login sessionsEnhanced Intrusion Detection Intrusion attempt handling Password management Password restrictionsLogical flow of intrusion attempt handling Enhanced password restrictions Password ReusePassword Aging Temporary Accounts Customer managed networks ACT-USER, CANC-USER, ED-SECU-PID ALW-MSG-ALL INH-MSG-ALL Security log audit trail Log Names Log name Log events General Broadcast toolSECU401 SECU410 Example of Modified Login Banner Modifiable Login Banner Login banner functionality Restore-banner NE3 DSM STS Managed DSM NE1 DSM DSMNE2 NE4 NE1 NE5NE4 DSM STS1 endpoints to DS1 facility grouping assignments STS1 AID is used to perform BWM operations onGroup of DS1 facilities Synchronization Support for 12 DSM External timing Internal timingLine timing Transport line timing External timing mode Timing signal sources Internal timing modeLine timing mode transport / tributary Tributary line timing Timing modes Stratum clocks Synchronization hierarchySMC Hierarchy violations Timing loopsST3 Hierarchical network synchronization Network element synchronization modes Building-integrated timing supply Bits Line timing External timing Timing sources and timing distribution Flow of synchronization timing signals Synchronization-status messages STU ST1 PRSST2 ST4 User-initiated synchronization switches User-specified quality levels for timing sourcesBits output with VTX-series or STX-192 circuit packs DUS Test Access Site Manager Test Access Session Management window Test Access Ports TAPs Monitoring test access Test access configurationsTest access components DCN Single FAD, Mone and Single FAD Monf Test access-monitor state Monitoring test access-Single FAD, Monf Monitoring test access-Single FAD, MoneMonitoring test access-Dual FAD, Monef TAP Split test access Test access-split stateSingle FAD, Splte and Single FAD Spltf Split test access-Single FAD, Splte Split test access-Single FAD, SpltfSplit test access-Single FAD, Splta Loss of association and auto recovery Split test access-Dual FAD, SpltefDual FAD, Spltef Site Manager User interface Time of day synchronization 170Operation, administration, and maintenance OAM features TOD parameters applicable to NP only Hhminsec Unknown TL1 Changes to Cross Connect AID parameter TL1 event exerciser TL1 event / log featureCLX RTRV-EQPT Behaviour Card in Slot 13 RTRV-EQPT Output CLX-13CTYPE=VTXOOS-AU, UEQ Database change events Log eventsInventory events VT management option on STX equipped OPTera Metro Topology enhancementsAtag sequence numbers VT management on a Upsr Per-site dedicated STS VTXSTX Per-site dedicated STS no VT loss in case of a fiber cut STXW/STX Virtual ring path-in-line and shared VT-managed STS VT#1 UPSR, 2 way STS-1 #1 Unprotected OM3500 180Operation, administration, and maintenance OAM features VT grooming on a Upsr VT grooming with dedicated STS at each site DS1 DS3 EC1 VT grooming with shared VT-managed STS 184Operation, administration, and maintenance OAM features OM3500 VT#1, STS-1 #1 Collocated OPTera Metro 3000 NE and shared VT-managed STS EX1561p 188Operation, administration, and maintenance OAM features General guidelines Upsr planning guidelines summaryPhysical subtending rings VT grooming at an STS-managed OPTera Metro 3500 sitePage New hardware in OPTera Metro 3500 Release Hardware feature descriptions OPTera Metro 3500 hardware Extended Reach ZX Small Form Factor Pluggable SFP NTTP51DZ Shelves equipped with VTX-48 or VTX-48e circuit packs Shelves equipped with STX-192 circuit packs OPTera Metro Shelf Assembly Universal Shelf NTN476DA Operational temperature rangeNTN476AH OC-3 circuit packs OC-48 non-DWDM circuit packs OC-48 Dwdm circuit packs OC-48 Dwdm NTN442LF OC-48 ER Dwdm NTN408CWOC-48 Dwdm NTN442NB OC192 non-DWDM circuit packs Electrical tributary circuit packs NTN438DA NTN433AANTTP51AA NTTP51BD NTN433BB OPTera Packet Edge System circuit packsNTN433EA NTN433FA Cross-connect / synchronization circuit packs NTN438BANTN414AA NTN414AB Protection switching circuit packs Power modules and BIPsNetwork / Shelf processors, and Ilan circuit packs Accessory shelves Cooling unit assembliesModules NTN452AH NTN452EANTN452CH NTN452EH NTN452JH NTN452JANTN452KA NTN452NA NTN451BA LIFs and LOAMsNTN451MA NTN451BH LIF, Loam 20Hardware feature descriptions Loam LIF OPTera Metro 3500 Shelf Assembly NTN476DA NTN452AA and BNC 12-Port Front I/O module NTN452JA DS1BNC 12 port I/O EX1157p 24Hardware feature descriptions Air deflector Replaceable I/O modules Hardware feature descriptions Module type and slot positions Type / PEC Positions Transport slotNTN476DA ADD / Drop DS1 29-56 Front I/O module NTN452CA DS1 1-28 Front I/O module NTN452AA BNC 12-Port Front I/O module NTN452JA DS1 29-84 Front I/O module NTN452EA DS1 1-28 Front Enhanced I/O module NTN452AH 8xRJ-45 Front I/O module NTN452NA DS1 29-84 Front Enhanced I/O module NTN452EH DS1 29-56 Front Enhanced I/O module NTN452CH 8xRJ-45 Front Enhanced I/O module NTN452NH BNC 12-Port Front Enhanced I/O module NTN452JH DS1 29-56 Rear I/O module NTN452DA DS1 1-28 Rear I/O module NTN452BA 8xRJ-45 Rear I/O module NTN452HB DS1 29-84 Rear I/O module NTN452FA Common modules Left OAM Loam NTN451MA, NTN451MHBNC 12-Port Rear I/O module NTN452KA Left OAM Loam NTN451MA, NTN451MH Left interface LIF NTN451BA, NTN451BHColan Ilan ACO Left interface LIF NTN451BA, NTN451BH OPTera Metro 3500 Cooling unit assembly NTN458QA OPTera Metro 3500 Universal cooling unit assembly NTN458QH Universal power module NTN451HA Universal power module NTN451HAOPTera Metro 3000 breaker interface panel BIP NTN458RA Breaker Alarm Power Input AlarmBay Alarms Alarm Circuits OPTera Metro 3500 BIP European deployment NTFW56BA Core circuit packs VTX equipped OPTera Metro 3500 shelf Core circuit packs STX-192 equipped OPTera Metro 3500 shelf EX1474p Tributary circuit packs OPTera Packet Edge circuit packs 2xGigE/FC-P2P and SFP interfaces NPx, ILAN, PSC, and PSX circuit packs PSCPSX Ilan External timing reference input signals STX-192 circuit pack NTN415AAEquipping rules OC48 STS OC-48 STS DSM Alarm LED definitions VTX-48 circuit pack NTN414AALED name Color Description VTX-48e circuit pack NTN414AB, NTN414AH TL1 sessions Extended shelf processor SPx NTN423BA, BH Reset button Alarms and TbosExtended network processor NPx NTN424BA, BH Section data communication channel Sdcc Alarms and provisioning data OC-192 optical interface circuit pack NTN445CB, DA Ilan interface NTN425AA Forward Error Correction FEC STS-1 path trace for OC-192Section trace for OC-192 Alarm Text or conditions OC-192 protection switching +1 linear protectionUpsr path protection Blsr protection 64Hardware feature descriptions OC-48 optical wavelength OC-48 circuit pack Wavelength STS-1 path trace for OC-48 Following table lists the OC-48 interface circuit pack LEDs Section trace for OC-48 OC-48 protection switching OC-48 STS optical interface circuit pack NTN440HA, KA, LA STS-1 path trace for OC-48 70Hardware feature descriptions Section data communication channel Sdcc Optical transmit Unidirectional path switched rings UPSRs OC-12 Protection switchingOptical receive +1 linear 74Hardware feature descriptions OC12x4 STS IR optical interface circuit pack NTN446CA Multimode InterworkingParameters Value 76Hardware feature descriptions OC-3 optical interface circuit pack NTN401AA, DA OC-3 Protection switching Section data communication channel Sdcc OC-3x4 optical interface circuit pack NTN441AA, AC Equipping rules EC-1x3 circuit pack NTN436AA Protection switching EC-1x12 circuit pack NTN436DA EC-1x12 circuit packs do not support Sdcc channels DS1 mapper NTN430AA, BA DS1 DS1 I/O module types 88Hardware feature descriptions DS3 alarms available only on DS3x12e mapper DS3x12 / DS3x12e mapper NTN435AA, AH / NTN435BADS3 Path PMs Near-End available only on DS3x12e mapper DS3VTx12 mapper NTN435FA 2x100BT-P2P circuit pack NTN433AA DS3/VT protection switching 92Hardware feature descriptions Shelf Module Scenario description OPTera Packet Edge System 4x100BT circuit pack NTN433BB WAN OPTera Packet Edge System 4x100FX circuit pack NTN433EA, FA LEDs Color Description 98Hardware feature descriptions Hardware feature descriptions Protection switch controller PSC NTN412AA OMX + Fiber Manager 4CH NT0H32AE, BE, CE, DE, EE, FE, GE, HE Protection switch extender PSX NTN413AA OMX + Fiber Manager 4CH equipment drawer OMX shelf not required with OMX + Fiber Manager 4CH NTN449ZW OMX OMX shelf NTN449ZW Mounting bracket labels Letter Rack type Fiber manager NT0H57BB Multiple is DS1 service module DSM shelf NTN407MA DS1 service module DSM NTN407MA EX0959p DSM OAM Hardware Release 6 with cover off DSM DS1x84 termination module TM NTN313AA, ACDSM OAM Hardware Release 6 with cover on LOS LED Name LED Color On condition descriptionPage OPTera Metro Multiservice Platform