copyright © 2005 marconi corporation plc. all rights reserved circuit emulation service (ces) atm...

Copyright © 2005 Marconi Corporation plc. All rights reserved

Circuit Emulation Service (CES)

ATM Switch

2 Copyright © 2005 Marconi Corporation plc. All rights reserved

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


What is Circuit Emulation Service (CES)?

Network

PBX

PBX

DataMux

VideoMonitor

PBXVideo

SE-400

ASX-1000

Video

ES-3810

SE-400


ATM Adaptation Layer 1 (AAL1)

Type Traffic Bit Rate Timing Payload Format

AAL1 Voice and Real-Time

Video

Constant Isochronous 47 bytes + 1 byte = 48 bytes(User Info) (Overhead)


Cell Fill

Full ATM AAL1 Cell Fill (47 bytes)

10110101

CellHeader

Sequence Number CRC / Parity

1 x DS0 (64 Kbps) = 6 milliseconds (overhead = 11%)

Variable Payload 12 to 47 bytes

Payload Pad

10110101

CellHeader

Sequence Number CRC / Parity

1 x DS0 (64 Kbps) 12 byte payload

= 1.1 milliseconds (overhead = 77%)

Partial ATM AAL1 Cell Fill (12 bytes)

+

47 byte payload


CES Hardware

ASX–4000/M

CES

4 ports OC-3

Channelization

SONET Network

TNX-210 TNX-1100

CES

1 port OC-3

Channelization

TDM Network

Customer Premise

CES

3 ports DS3

6 or 8 ports UTP

PBX


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


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

Structured Service

Unstructured Service


DS3 Channelization ExampleN

etm

od

Ch

an

ne

lize

dD

S3

po

rt

28 individual DS1s• Each DS1 could be structured or unstructured

1 unstructured DS3

or

A structured DS1 contains 24 DS0s

Structured DS1


OC-3 Channelization ExampleN

etm

od

/Po

rt C

ard

Ch

an

ne

lize

dO

C-3

po

rt

STS-1

STS-1

STS-1 DS3

DS3

DS31 unstructured DS3

or

28 individual DS1s• Each DS1 could be structured or unstructured

A structured DS1 contains 24 DS0s


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)


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->



Normal Connection:

Dangling 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

ATM SWITCH:services ces-> new –iatmif 1a2 –its all


CES Input Output


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



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


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




[[-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


Unstructured CES Ch DS3 Netmod Configuration -2Normal 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

ATM SWITCH:services ces-v2-> new –icbrservice 1c1(2)

NOTICE: vci=2336

INFO: CES upc contract obtained. Index = 1.




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


Unstructured CES Ch DS3 Netmod Configuration -3


Service Police



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


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




[[-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



Normal Connection:


ATM SWITCH:services ces-v2-> new –icbrservice 1a1[1](1,1) –oatmif 2b1 –ovpi 0 –ovci 100

NOTICE: vci=2304




1A1[1](1,1) pvc 1A1[1] 0 2304 N/A 2B1 0 100

ATM SWITCH:services ces-v2-> new –icbrservice 1a1[2](1,1)

NOTICE: vci=2304





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




Service Police



1 CBR cbr1 4107 3000 ces_cbr4107

ATM SWITCH:-> services ces-v2 show -advanced



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



1A1[1](1,1) 0 0 0 0 0 noLoss

1A1[2](1,1) 0 0 0 0 0 noLoss


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


CES Input Output


1024 up 1A1 1-3 0 129 pvc 1B1 N/A 0 100

ATM SWITCH:services ces-> new –iatmif 1a2 –its 1-5 –cas cas


CES Input Output


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


Structured CES DS1 Netmod Configuration -2


Service Police



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


Structured CES Ch DS3 Netmod Configuration -1Enable 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






1C1(1) 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


Structured CES Ch DS3 Netmod Configuration -2

Normal Connection:

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)

ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle1 –oatmif 1b1 –ovpi 0 –ovci 100 –cas ds1esfcas

NOTICE: vci=2304




DS0BUNDLE1 pvc 1C1 32 2304 N/A 1B1 0 100


Structured CES Ch DS3 Netmod Configuration -3Dangling Connection:ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle2 –cas ds1esfcas

NOTICE: vci=2336





DS0BUNDLE1 pvc 1C1 32 2304 N/A 1B1 0 100

DS0BUNDLE2 pvc 1C1 33 2336 N/A N/A N/A N/A


Structured CES Ch DS3 Netmod Configuration -4

ATM SWITCH:connections upc-> show

Service Police





ATM SWITCH:services ces-v2-> show -advanced



DS0BUNDLE1 structured ds1EsfCas synchronous 0 2000 500 2500


ATM SWITCH:services ces-v2-> statistics



DS0BUNDLE1 0 0 0 0 0 noLoss



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



Normal Connection:

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)

ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle1 –oatmif 2b2 –ovpi 0 –ovci 100 –cas ds1esfcas

NOTICE: vci=2304




DS0BUNDLE1 pvc 1A2[1] 0 2304 N/A 2B2 0 100




ATM SWITCH:services ces-v2-> new –icbrservice ds0bundle2 –cas ds1esfcas

NOTICE: vci=2305





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



ATM SWITCH:connections upc-> show

Service Police




2 CBR cbr1 1046 3000 ces_cbr1046

ATM SWITCH:services ces-v2-> show -advanced

CBR Service Service Clock Partial MaxBuff RX Integ




ATM SWITCH:-services ces-v2-> statistics






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

copyright © 2005 marconi corporation plc. all rights reserved circuit emulation service (ces) atm...

Documents

services ces slide

unstructured ces instance

services ces atm switch

ces hardware asx4000m

port numbering ds1 ces

port unstructured mode

structured ces instance

unstructured ds3