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Circuit Emulation Service (CES)

Circuit Emulation Service (CES). ATM Switch. Objectives. Explain Circuit Emulation Service (CES) Define the role of the Circuit Emulation (CEM) netmods and port card Describe the features of the CEM netmods and port card Compare and contrast CAS and CCS signalling

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Circuit Emulation Service (CES)

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  1. Circuit Emulation Service (CES) ATM Switch

  2. Objectives • Explain Circuit Emulation Service (CES) • Define the role of the Circuit Emulation (CEM) netmods and port card • Describe the features of the CEM netmods and port card • Compare and contrast CAS and CCS signalling • Explain structured and unstructured CES • Explain DS3 and OC-3 channelization • Create an unstructured CES instance • Create a structured CES instance

  3. What is Circuit Emulation Service (CES)? Video PBX SE-400 SE-400 Video Network ES-3810 ASX-1000 PBX VideoMonitor PBX DataMux

  4. ATM Adaptation Layer 1 (AAL1)

  5. + Full ATM AAL1 Cell Fill (47 bytes) Sequence Number CRC / Parity 10110101 = 6 milliseconds (overhead = 11%) 1 x DS0 (64 Kbps) Cell Header Partial ATM AAL1 Cell Fill (12 bytes) Sequence Number CRC / Parity Payload Pad 10110101 12 byte payload 1 x DS0 (64 Kbps) = 1.1 milliseconds (overhead = 77%) Cell Header Variable Payload 12 to 47 bytes Cell Fill 47 byte payload

  6. CES CES Channelization Channelization PBX TDM Network SONET Network CES Hardware TNX-210 TNX-1100 6 or 8 ports UTP ASX–4000/M CES Customer Premise 4 ports OC-3 3 ports DS3 1 port OC-3

  7. Signalling • Channel Associated Signalling (CAS) • In-band signalling that is required for structured service • Common Channel Signalling (CCS) • Out-of-band signalling wherein one channel of a DS1 is used for the signalling

  8. Structured Service Interface Capacity and Service Types DS1 Netmod • Structured mode: • 1 to 24 DS0s per port • Unstructured mode: • Single DS1 per port Channelized DS3 Netmod • Structured mode: • 1 to 672 DS0s per port • Unstructured mode: • Single DS3 per port • 28 DS1s per port Channelized OC-3 Netmod/Port Card • Structured mode: • 1 to 2,016 DS0s per port • Unstructured mode: • 3 DS3s per port • 84 DS1s per port Unstructured Service

  9. Structured DS1 DS3 Channelization Example 1 unstructured DS3 or • 28 individual DS1s • Each DS1 could be structured or unstructured ChannelizedDS3 port Netmod A structured DS1 contains 24 DS0s

  10. OC-3 Channelization Example 1 unstructured DS3 STS-1 DS3 or ChannelizedOC-3 port Netmod/Port Card • 28 individual DS1s • Each DS1 could be structured or unstructured STS-1 DS3 STS-1 DS3 A structured DS1 contains 24 DS0s

  11. Port Numbering • DS1 CES netmods use the same ForeThought port numbering format as cell netmods: 1A1 • Ch DS3 CES netmods use a hybrid port numbering format to identify channelized interfaces on a physical port • DSX3 interfaces = port: 2b1 • DSX1 interfaces = port(DS1 channel in DS3): 2b1(1) • DS0 interfaces = port(DS1 channel in DS3, DS0 in DS1): 2b1(1,1) • Ch OC-3 CES netmods/port cards use a hybrid port numbering format to identify channelized interfaces on a physical port • DSX3 interfaces = port[SONET path]: 4C1[1] • DSX1 interfaces = port[SONET path](virtual tributary group, virtual tributary): 4C2[2](1,1) • DS0 interfaces = port[SONET path](virtual tributary group, virtual tributary, DS0): 4C3[3](1,2,3)

  12. Unstructured CES DS1 Netmod Configuration -1 ATM SWITCH:-> services ces ATM SWITCH:services ces-> new ? [[-ifindex] <integer>] CES Service Index [-iatmif] <AtmIf> Input AtmIf [-its] <text> Input Timeslots [[-oatmif] <AtmIf>] Output AtmIf [[-ots] <text>] Output Timeslots [[-ovpi] <integer>] Output VPI [[-ovci] <integer>] Output VCI [[-srts] <cbrclockmode>] SRTS [[-fupc] <UPC Index>] Forward UPC [[-bupc] <UPC Index>] Backward UPC [[-cas] <cas>] CAS [[-partialfill] <integer>] Partial Fill [[-reassCDVT] <integer>] Reass CDVT (us) [[-bufsize] <integer>] Buf Size : ATM SWITCH:services ces->

  13. Unstructured CES DS1 Netmod Configuration -2 Normal Connection: ATM SWITCH:services ces-> new –iatmif 1a1 –its all –oatmif 1b4 –ovpi 0 –ovci 100 ATM SWITCH:services ces-> show CES Input Output Id State AtmIf TimeSlots VPI VCI Type AtmIf TimeSlots VPI VCI 1025 up 1A1 unstructured 0 129 pvc 1B4 N/A 0 100 Dangling Connection: ATM SWITCH:services ces-> new –iatmif 1a2 –its all ATM SWITCH:services ces-> show CES Input Output Id State AtmIf TimeSlots VPI VCI Type AtmIf TimeSlots VPI VCI 1025 up 1A1 unstructured 0 129 pvc 1B4 N/A 0 100 1028 down 1A2 unstructured 0 130 N/A N/A N/A N/A N/A

  14. Unstructured CES DS1 Netmod Configuration -3 ATM SWITCH:-> connections upc show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 4107 3000 ces_cbr4107 ATM SWITCH:-> services ces show -advanced CES Map Map Service Clock Partial Max Integ. Reass Index VPI VCI Type Mode Cas Fill Buf Period CDVT 1025 0 129 unstructured synch basic 47 6144 2500 2500 1028 0 130 unstructured synch basic 47 6144 2500 2500 ATM SWITCH:-> services ces statistics CES Reass Header Pointer Buffer Buffer CellLoss Id Cells Errors Reframes Lost Cells UnderFlows OverFlows Status 1025 0 0 0 0 0 0 noLoss 1028 0 0 0 0 0 0 noLoss

  15. Unstructured CES Ch DS3 Netmod Configuration -1 ATM SWITCH:-> services ces-v2 ATM SWITCH:services ces-v2-> new ? [-icbrservice] <CbrServiceIf> Input CES Service Interface [[-ocbrservice] <CbrServiceIf>] Output CES Service Interface [[-oatmif] <AtmIf>] Output AtmIf [[-ovpi] <integer>] Output VPI [[-ovci] <integer>] Output VCI [[-clockmode] <clockmode>] CBR Clock Mode (default: synchronous) [[-cas] <cas>] CAS [[-partialfill] <integer>] Partial Fill (default: 0) [[-bufmaxsize] <integer>] Buffer Max Size (default: 2000) [[-reasscdvt] <integer>] Reassembled CDVT (default: 500) [[-integperiod] (1000..65535)] Integration Period (default: 2500) [[-adminstatus] <ifadminstatus>] Admin Status (default: up) [[-statsenable] <cesstatsenable>] CES Stats Enable [[-tcmode <tcmode>] Trunk Condition Mode [[-tcsignal] <Hex Integer>] <0..F> Trunk Condition Signal [[-tcdata] <Hex Integer>] <0..FF> Trunk Condition Data

  16. Unstructured CES Ch DS3 Netmod Configuration -2 Normal Connection: ATM SWITCH:services ces-v2-> new –icbrservice 1c1(1) –oatmif 1b1 –ovpi 0 –ovci 100 NOTICE: vci=2304 ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI 1C1(1) pvc 1C1 0 2304 N/A 1B1 0 100 Dangling Connection: ATM SWITCH:services ces-v2-> new –icbrservice 1c1(2) NOTICE: vci=2336 INFO: CES upc contract obtained. Index = 1. ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI 1C1(1) pvc 1C1 0 2304 N/A 1B1 0 100 1C1(2) pvc 1C1 1 2336 N/A N/A N/A N/A

  17. Unstructured CES Ch DS3 Netmod Configuration -3 ATM SWITCH:-> connections upc show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 4107 3000 ces_cbr4107 ATM SWITCH:-> services ces-v2 show -advanced CBR Service Service Clock Partial MaxBuff Rx Integ Interface Type CAS Mode Fill Size CDVT Period 1C1(1) unstructured N/A synchronous 0 2000 500 2500 1C1(2) unstructured N/A synchronous 0 2000 500 2500 ATM SWITCH:-> services ces-v2 statistics CBR Service Reass Lost Misinserted Buffer Buffer CellLoss Interface Cells Cells Cells UnderFlows OverFlows Status 1C1(1) 0 0 0 0 0 noLoss 1C1(2) 0 0 0 0 0 noLoss

  18. Unstructured CES Ch OC-3 Netmod/Port Card Configuration -1 ATM SWITCH:-> services ces-v2 ATM SWITCH:services ces-v2-> new ? [-icbrservice] <CbrServiceIf> Input CES Service Interface [[-ocbrservice] <CbrServiceIf>] Output CES Service Interface [[-oatmif] <AtmIf>] Output AtmIf [[-ovpi] <integer>] Output VPI [[-ovci] <integer>] Output VCI [[-clockmode] <clockmode>] CBR Clock Mode (default: synchronous) [[-cas] <cas>] CAS [[-partialfill] <integer>] Partial Fill (default: 0) [[-bufmaxsize] <integer>] Buffer Max Size (default: 2000) [[-reasscdvt] <integer>] Reassembled CDVT (default: 500) [[-integperiod] (1000..65535)] Integration Period (default: 2500) [[-adminstatus] <ifadminstatus>] Admin Status (default: up) [[-statsenable] <cesstatsenable>] CES Stats Enable [[-tcmode <tcmode>] Trunk Condition Mode [[-tcsignal] <Hex Integer>] <0..F> Trunk Condition Signal [[-tcdata] <Hex Integer>] <0..FF> Trunk Condition Data

  19. Unstructured CES Ch OC-3 Netmod/Port Card Configuration -2 Normal Connection: ATM SWITCH:services ces-v2-> new –icbrservice 1a1[1](1,1) –oatmif 2b1 –ovpi 0 –ovci 100 NOTICE: vci=2304 ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI 1A1[1](1,1) pvc 1A1[1] 0 2304 N/A 2B1 0 100 Dangling Connection: ATM SWITCH:services ces-v2-> new –icbrservice 1a1[2](1,1) NOTICE: vci=2304 INFO: CES upc contract obtained. Index = 1. ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI 1A1[1](1,1) pvc 1A1[1] 0 2304 N/A 2B1 0 100 1A2[2](1,1) pvc 1A1[2] 0 2304 N/A N/A N/A N/A

  20. Unstructured CES Ch OC-3 Netmod/Port Card Configuration -3 ATM SWITCH:-> connections upc show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 4107 3000 ces_cbr4107 ATM SWITCH:-> services ces-v2 show -advanced CBR Service Service Clock Partial MaxBuff Rx Integ Interface Type CAS Mode Fill Size CDVT Period 1A1[1](1,1) unstructured N/A synchronous 0 2000 500 2500 1A2[2](1,1) unstructured N/A synchronous 0 2000 500 2500 ATM SWITCH:-> services ces-v2 statistics CBR Service Reass Lost Misinserted Buffer Buffer CellLoss Interface Cells Cells Cells UnderFlows OverFlows Status 1A1[1](1,1) 0 0 0 0 0 noLoss 1A1[2](1,1) 0 0 0 0 0 noLoss

  21. Structured CES DS1 Netmod Configuration -1 Normal Connection: ATM SWITCH:services ces-> new –iatmif 1a1 –its 1-3 –oatmif 1b1 –ovpi 0 –ovci 100 –cas cas ATM SWITCH:services ces-> show CES Input Output Id State AtmIf TimeSlots VPI VCI Type AtmIf TimeSlots VPI VCI 1024 up 1A1 1-3 0 129 pvc 1B1 N/A 0 100 Dangling Connection: ATM SWITCH:services ces-> new –iatmif 1a2 –its 1-5 –cas cas ATM SWITCH:services ces-> show CES Input Output Id State AtmIf TimeSlots VPI VCI Type AtmIf TimeSlots VPI VCI 1024 up 1A1 1-3 0 129 pvc 1B1 N/A 0 100 1025 down 1A2 1-5 0 130 N/A N/A N/A N/A N/A

  22. Structured CES DS1 Netmod Configuration -2 ATM SWITCH:-> connections upc show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 667 3000 ces_cbr667 2 CBR cbr1 1112 3000 ces_cbr1112 ATM SWITCH:services ces-> show -advanced CES Map Map Service Clock Partial Max Integ. Reass Index VPI VCI Type Mode Cas Fill Buf Period CDVT 1024 0 129 structured synch cas 47 768 2500 2000 1025 0 130 structured synch cas 47 1280 2500 2000 ATM SWITCH:services ces-> statistics CES Reass Header Pointer Buffer Buffer CellLoss Id Cells Errors Reframes Lost Cells UnderFlows OverFlows Status 1024 0 0 0 0 0 0 noLoss 1025 0 0 0 0 0 0 noLoss

  23. Structured CES Ch DS3 Netmod Configuration -1 Enable DSX1 Interfaces: ATM SWITCH:-> interfaces dsx1 ATM SWITCH:interfaces dsx1-> show -advanced DSX1 Port Line Upstream Channel Interface Timing Length AIS Model Mode 1A1 localTiming Lt40 disabled CESDS1 N/A 1A2 localTiming Lt40 disabled CESDS1 N/A 1A3 localTiming Lt40 disabled CESDS1 N/A 1A4 localTiming Lt40 disabled CESDS1 N/A 1A5 localTiming Lt40 disabled CESDS1 N/A 1A6 localTiming Lt40 disabled CESDS1 N/A 1C1(1) N/A N/A disabled CESCDS3 dsx1disabled 1C1(2) N/A N/A disabled CESCDS3 dsx1disabled 1C1(3) N/A N/A disabled CESCDS3 dsx1disabled 1C1(4) N/A N/A disabled CESCDS3 dsx1disabled 1C1(5) N/A N/A disabled CESCDS3 dsx1disabled 1C1(6) N/A N/A disabled CESCDS3 dsx1disabled ATM SWITCH: interfaces dsx1-> mod –lineindex 1c1(1) –channelization dsx1enabledDs0 WARNING: The port is currently active. If you proceed, any connections will be interrupted Do you wish to continue (y or n): y

  24. Structured CES Ch DS3 Netmod Configuration -2 Create DS0 Bundles: ATM SWITCH:interfaces ds0bundle-> new -bundleindex ds0bundle1 –ds0slist {1c1(1,1); 1c1(1,2); 1c1(1,3)} ATM SWITCH:interfaces ds0bundle-> show DS0Bundle Admin Oper Loopback Configured Interface State State DS0s DS0BUNDLE1 up down disabled 1C1(1,1) 1C1(1,2) 1C1(1,3) Normal Connection: ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle1 –oatmif 1b1 –ovpi 0 –ovci 100 –cas ds1esfcas NOTICE: vci=2304 ATM SWITCH:services ces-v2->show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI DS0BUNDLE1 pvc 1C1 32 2304 N/A 1B1 0 100

  25. Structured CES Ch DS3 Netmod Configuration -3 Dangling Connection: ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle2 –cas ds1esfcas NOTICE: vci=2336 INFO: CES upc contract obtained. Index = 2. ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI DS0BUNDLE1 pvc 1C1 32 2304 N/A 1B1 0 100 DS0BUNDLE2 pvc 1C1 33 2336 N/A N/A N/A N/A

  26. Structured CES Ch DS3 Netmod Configuration -4 ATM SWITCH:connections upc-> show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 512 3000 ces_cbr512 2 CBR cbr1 527 3000 ces_cbr527 ATM SWITCH:services ces-v2-> show -advanced CBR Service Service Clock Partial MaxBuff Rx Integ Interface Type CAS Mode Fill Size CDVT Period DS0BUNDLE1 structured ds1EsfCas synchronous 0 2000 500 2500 DS0BUNDLE2 structured ds1EsfCas synchronous 0 2000 500 2500 ATM SWITCH:services ces-v2-> statistics CBR Service Reass Lost Misinserted Buffer Buffer CellLoss Interface Cells Cells Cells UnderFlows OverFlows Status DS0BUNDLE1 0 0 0 0 0 noLoss DS0BUNDLE2 0 0 0 0 0 noLoss

  27. Structured CES Ch OC-3 Netmod/Port Card Configuration -1 Enable DSX1 Interfaces: ATM SWITCH:interfaces dsx1-> show -advanced DSX1 Port Line Upstream Channel Interface Timing Length AIS Model Mode 1A1[1](1,1) throughTiming Lt40 disabled CH0C3CES dsx1disabled 1A1[1](1,2) throughTiming Lt40 disabled CH0C3CES dsx1disabled 1A1[1}(1,3) throughTiming Lt40 disabled CHOC3CES dsx1disabled ATM SWITCH: interfaces dsx1-> mod –lineindex 1a2[1](1,1) –channelization dsx1enabledDs0 WARNING: The port is currently active. If you proceed, any connections will be interrupted Do you wish to continue (y or n): y

  28. Structured CES Ch OC-3 Netmod/Port Card Configuration -2 Create DS0 Bundles: ATM SWITCH:interfaces ds0bundle-> new -bundleindex ds0bundle1 –ds0slist {1a2[1](1,1,1); 1a2[1](1,1,2); 1a2[1](1,1,3); 1a2[1](1,1,4); 1a2[1](1,1,5)} ATM SWITCH:interfaces ds0bundle-> show DS0Bundle Admin Oper Loopback Configured Interface State State DS0s DS0BUNDLE1 up down disabled 1A2[1](1,1,1) 1A2[1](1,1,2) 1A2[1](1,1,3) 1A2[1](1,1,4) Normal Connection: ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle1 –oatmif 2b2 –ovpi 0 –ovci 100 –cas ds1esfcas NOTICE: vci=2304 ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI DS0BUNDLE1 pvc 1A2[1] 0 2304 N/A 2B2 0 100

  29. Structured CES Ch OC-3 Netmod/Port Card Configuration -3 Dangling Connection: ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle2 –cas ds1esfcas NOTICE: vci=2305 INFO: CES upc contract obtained. Index = 2. ATM SWITCH:services ces-v2-> show CBR Service Conn INPUT OUTPUT Interface Type AtmIf VPI VCI ServiceIf Atmif VPI VCI DS0BUNDLE1 pvc 1A2[1] 0 2304 N/A 2B2 0 100 DS0BUNDLE2 pvc 1A2[1] 0 2305 N/A N/A N/A N/A

  30. Structured CES Ch OC-3 Netmod/Port Card Configuration -4 ATM SWITCH:connections upc-> show Service Police Index Category Scheme PCR SCR MBS MCR CDVT Name 0 UBR ubr1 default_ubr 1 CBR cbr1 875 3000 ces_cbr875 2 CBR cbr1 1046 3000 ces_cbr1046 ATM SWITCH:services ces-v2-> show -advanced CBR Service Service Clock Partial MaxBuff RX Integ Interface Type CAS Mode Fill Size CDVT Period DS0BUNDLE1 structured ds1EsfCas synchronous 0 2000 500 2500 DS0BUNDLE2 structured ds1EsfCas synchronous 0 2000 500 2500 ATM SWITCH:-services ces-v2-> statistics CBR Service Reass Lost Misinserted Buffer Buffer CellLoss Interface Cells Cells Cells UnderFlows OverFlows Status DS0BUNDLE1 0 0 0 0 0 noLoss DS0BUNDLE2 0 0 0 0 0 noLoss

  31. Summary • Explain Circuit Emulation Service (CES) • Define the role of the Circuit Emulation (CEM) netmods and port card • Describe the features of the CEM netmods and port card • Compare and contrast CAS and CCS signalling • Explain structured and unstructured CES • Explain DS3 and OC-3 channelization • Create an unstructured CES instance • Create a structured CES instance

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