Cisco ASR 900 Series User manual

1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration
Guide, Cisco IOS XE Everest 16.7.x (Cisco ASR 900 Series)
First Published: 2017-11-17
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©2017 Cisco Systems, Inc. All rights reserved.

CONTENTS
CHAPTER 1 Configuring CEM 1
Overview of Circuit Emulation 1
Restrictions for CEM 1
Structure-Agnostic TDM over Packet 2
Configuring CEM for SAToP 2
Configuring CEM Group for SAToP for T1 Interfaces 2
Configuring CEM Classes 3
Configuring CEM Parameters 3
Configuring Payload Size (Optional) 3
Setting the Dejitter Buffer Size 3
Shutting Down a CEM Channel 4
Configuring DS1 CT3 SAToP Mode 4
Configuring VT DS1 SAToP Mode 4
Configuring STS-Nc CEP 4
Configuring CEP 5
Configuring VT-15 CEP 5
Configuring DS3 SAToP 5
Configuring CEM APS 5
Configuring Unidirectional APS for SAToP 6
Configuring Bi-directional ACR (SONET Framing) for SAToP 6
Verifying CEM Statistics for SAToP 6
Associated Commands 7
Additional References for Configuring CEM 9
CHAPTER 2 CEM over MPLS QoS 11
Finding Feature Information 11
Information About CEM over MPLS QOS 11
Classifying and Marking MPLS EXP Overview 11
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
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Prerequisites for CEM over MPLS QoS 12
Restrictions for CEM over MPLS QoS 12
How to Classify and Mark MPLS EXP 12
Classifying MPLS Encapsulated Packets 12
Marking MPLS EXP on Imposed Labels 13
Classifying and Marking MPLS EXP 13
Configuration Examples 13
Example: Defining an MPLS EXP Class Map 13
Example: Defining a Policy Map and Applying the Policy Map to an Ingress Interface 14
Example: Defining a Policy Map and Applying the Policy Map to an Egress Interface 14
Example: Defining an MPLS EXP Imposition Policy Map 14
Example: Applying the MPLS EXP Imposition Policy Map to a Main Interface 15
Example: Applying the MPLS EXP Imposition Policy Map to an EVC 15
Example: Defining an MPLS EXP Label Switched Packets Policy Map 15
Example: Applying the MPLS EXP Label Switched Packets Policy Map to a Main
Interface 16
Additional References for CEM over MPLS QoS 16
CHAPTER 3 Configuring SONET 19
Overview of SONET 20
Restrictions for SONET 20
SONET Switching 21
SONET Hierarchy 22
Section 22
Line 22
Path 22
STS-1 and STS-3 Frames 23
SONET Line and Section Configuration Parameters 24
BERT 25
Concatenated SONET Frames 26
SONET Path Level Configuration Parameters 26
Channelized SONET Frames 27
SONET T1 Configuration Parameters 27
SONET T3 Configuration Parameters 27
SONET VT Configuration Parameters 28
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
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SONET Protection Switching 28
1+1 APS 28
Benefits of APS 29
APS 1+1 for SONET Layer 1 traffic 29
Scenario for Bidirectional APS 1+1 30
Scenario for Unidirectional APS 1+1 31
UPSR Path Protection 31
Configuring UPSR 32
Configuring UPSR Work and Protection Path Configuration 32
Verification of UPSR Configuration 33
Alarms at SONET Layers 33
SONET Alarm Surveillance 33
Section Alarms 33
Line Alarms 34
Path Alarms 34
VT Alarms 34
T1 Alarms 35
T3 Alarms 35
Alarm Indicators 35
How to Configure SONET 35
Prerequisites for Configuring SONET 36
Configuring MediaType Controller 36
Configuring SONET Ports 36
Managing and Monitoring SONET Line 36
Configuring Line and Section Overhead 36
Configuring Line and Section Threshold 37
Configuring Line Loopback 37
Configuring AIS Shut 37
Configuring Shut 37
Configuring Alarm Reporting 38
Configuring Clock 38
Configuring STS-1 Modes 38
Configuring DS1/T1 CT3 mode of STS-1 39
Configuring STS-Nc - Contiguous Concatenation 39
Configuring CEM Group for Sonet Mode VT1.5-T1 in CESoPSN 40
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
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Configuring CEM Group for Sonet Mode CT3-T1 in CESoPSN 40
Configuring APS for SAToP 40
Configuring Bi-directional ACR (SONET Framing) for SAToP 40
Configuring Unidirectional APS for SAToP 40
Verifying ACR Configurations for SAToP 41
Configuring APS for CESoPSN 43
Configuring CEM Group for APS CT3-T1 in CESoPSN 43
Configuring CEM Group for APS VT1.5-T1 in CESoPSN 43
Configuring VT 1.5-T1 Loopback 44
Configuring VT 1.5-T1 BERT 44
Configuring Path Overhead 44
Configuring Path Threshold 45
Verification of SONET Configuration 45
Performance Monitoring Use Cases or Deployment Scenarios 48
ONS Pluggables 51
Configuring ONS Pluggables 51
Verifying the Supported Pluggables 51
Configuring BERT in Sonet for CESoPSN 53
Restrictions for SONET BERT on CESoPSN 54
Configuring VT1.5-T1 BERT for CESoPSN 54
Verifying VT1.5-T1 BERT Configuration for CESoPSN 55
Configuring CT3-T1 mode BERT for CESoPSN 55
Verifying CT3-T1 mode BERT for CESoPSN 55
Clock Recovery System in CESoPSN 55
Adaptive Clock Recovery in CESoPSN 56
Differential Clock Recovery in CESoPSN 56
Benefits of Clock Recovery 57
Prerequisites for Clock Recovery 57
Restrictions for Clock Recovery 57
Configuring ACR in VT 1.5-T1 mode for CESoPSN 58
Verifying ACR in VT 1.5-T1 mode for CESoPSN 58
Configuring DCR in VT 1.5-T1 mode for CESoPSN 58
Verifying DCR in VT 1.5-T1 mode for CESoPSN 59
Configuring ACR in CT3-T1 mode for CESoPSN 59
Verifying ACR in CT3-T1 mode for CESoPSN 59
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
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Configuring DCR in CT3-T1 mode for CESoPSN 60
Verifying DCR in CT3-T1 mode for CESoPSN 60
Configuring Clocking for ACR and DCR on APS for CESoPSN 60
Configuring Clocking for ACR on APS CT3-T1 in CESoPSN 60
Verifying Clocking for ACR on APS CT3-T1 in CESoPSN 61
Configuring Clocking for DCR on APS CT3-T1 in CESoPSN 61
Verifying Clocking for DCR on APS CT3-T1 in CESoPSN 62
Configuring Clocking for ACR on APS VT 1.5-T1 in CESoPSN 62
Verifying Clocking for ACR on APS VT 1.5-T1 in CESoPSN 63
Configuring Clocking for DCR on APS VT 1.5-T1 in CESoPSN 63
Verifying Clocking for DCR on APS VT 1.5-T1 in CESoPSN 64
Associated Commands 64
Additional References for Configuring SONET on 1-Port OC192/STM-64 or 8-Port
OC3/12/48/STM-1/-4/-16 Interface Module 67
CHAPTER 4 Configuring SDH on 1-Port OC-192/STM-64 or 8-Port OC-3/12/48/STM-1/-4/-16 Module 69
Overview of SDH 70
Basic SDH Signal 70
SDH Hierarchy 70
SDH Frame Structure 70
VC 72
CEM Overview 72
Services Provided by SDH Configuration 73
SDH Multiplexing 75
Modes of SDH 76
Configuring AUG Mapping 77
Configuring AU-3 or AU-4 Mapping 77
Configuring Mixed AU-3 and AU-4 Mapping 77
Verifying AUG Mapping Configuration 77
Configuring Modes under AU-4 Mapping 78
Configuring Mode VC4 CEP 78
Verifying Mode VC-4 Configuration 78
Configuring Mode TUG-3 79
Configuring AU-4 —TUG-3 —VC-3 —DS3 79
Verifying DS3 Configuration 79
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
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Configuring AU-4 —TUG-3 —VC-3 —E3 80
Verifying E3 Configuration 80
Configuring Mode VC-1x 80
Configuring AU-4 —TUG-3 —TUG-2 —VC-11 —T1 81
Configuring AU-4 —TUG-3 —TUG-2 —VC-12 81
Configuring AU-4 —TUG-3 —TUG-2 —VC-11 —VC 82
Configuring AU-4 —TUG-3 —TUG-2 —VC-12 —VC 82
Verifying Mode VC-1x Configuration 82
Configuring Mode VC-4 Nc 83
Verifying Mode VC-4 Nc Configuration 83
Configuring AU-3 —VC-3 —DS3 83
Configuring AU-3 —VC-3 —E3 84
Configuring Modes under AU-3 Mapping 84
Configuring Mode VC-1x 84
Configuring AU-3 —TUG-2 —VC-11 —VC 84
Configuring AU-3 —TUG-2 —VC-12 —VC 84
Configuring AU-3 —TUG-2 —VC-11 —T1 85
Configuring AU-3 —TUG-2 —VC-12 —E1 85
Verifying Mode VC-1x Configuration 85
Restrictions for SDH in SAToP 86
Restrictions for SDH in CESoPSN 87
Configuring Mediatype Controller 88
Configuring Rate on SDH Ports 88
SDH Line and Section Configuration Parameters 89
Overhead 89
Configuring Line and Section Overhead 89
Threshold 89
Configuring Line and Section Threshold 90
Loopback 90
Configuring Line Loopback 90
AIS-Shut 90
Configuring AIS Shut 91
Shutdown 91
Configuring Shut 91
Alarm Reporting 91
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
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Configuring Alarm Reporting 92
Clock Source 92
Configuring Clock 92
Verifying SDH Line and Section Parameters Configuration 93
Configuring SDH Path Parameters 93
Path Overhead 93
C2 Flag 94
J1 Flag 94
Path Threshold 94
Configuring Path Threshold 95
Path Loopback 95
Configuring Path Loopback 95
Configuring Path BERT 95
Verifying Path Parameters Configuration 95
Configuring BERT in SDH for SAToP 96
Configuring BERT in Modes VC-4 and VC Nc 97
Verifying BERT Configuration in Modes VC-4 and VC Nc 97
Configuring T1 Bert 97
Configuring E1 Bert 98
Configuring BERT in Mode T3/E3 98
Verifying BERT Configuration in Mode T3/E3 98
Configuring BERT in Mode VC-1x 99
Verifying BERT Configuration in Mode VC-1x 99
Configuring BERT in SDH for CESoPSN 99
Restrictions for SDH BERT on CESoPSN 100
Configuring BERT in AUG mapping AU-3 VC1x T1 for CESoPSN 100
Configuring BERT in AUG mapping AU-4 VC1x E1 for CESoPSN 101
Verifying BERT Configuration in AUG mapping AU-3 VC1x T1 or AU-4 VC1x E1 for
CESoPSN 101
SDH T1/E1 Configuration Parameters for SAToP 101
Configuring T1/E1 Parameters 102
Verifying T1/E1 Parameters Configuration 102
SDH T3/E3 Configuration Parameters for SAToP 102
Configuring SDH T3/E3 Parameters Configuration 103
Verifying SDH T3/E3 Parameters Configurations 103
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SDH VC Configuration Parameters for SAToP 103
Configuring VC Parameters 104
Verifying VC Configuration Parameters Configurations 104
Configuring CEM Group for CESoPSN 105
Configuring CEM Group for AU3-T1 on SDH for CESoPSN 105
Verifying CEM Group for AU3-T1 on SDH for CESoPSN 105
Configuring CEM Group for AU4-E1 on SDH for CESoPSN 106
Verifying CEM Group for AU4-E1 on SDH for CESoPSN 106
Configuring ACR and DCR for SAToP 107
Configuring ACR for SAToP 107
Verifying ACR Configuration 108
Configuring DCR for SAToP 108
Verifying DCR Configuration 109
Configuring ACR and DCR for CESoPSN 109
Configuring ACR for CESoPSN 109
Verifying ACR Configuration for CESoPSN 110
Configuring DCR for CESoPSN 110
Verifying DCR Configuration for CESoPSN 111
CHAPTER 5 Configuring MSP on 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module 113
1+1 MSP 114
Benefits of MSP 114
Restrictions for MSP 114
MSP 1+1 for SDH Layer 1 traffic 115
Scenario for Bidirectional MSP 1+1 115
Scenario for Unidirectional MSP 1+1 116
Configuring MSP for SAToP 116
Verifying MSP Configuration for SAToP 118
Configuring MSP for CESoPSN 119
Configuring CEM Group for MSP on Virtual ACR AU3-T1 in CESoPSN 119
Verifying CEM Group for MSP on Virtual ACR AU3-T1 in CESoPSN 119
Configuring CEM Group for MSP on Virtual ACR AU4-E1 in CESoPSN 120
Verifying CEM Group for MSP on Virtual ACR AU4-E1 in CESoPSN 120
Configuring Clocking ACR for MSP AU3-T1 in CESoPSN 121
Verifying Clocking ACR for MSP AU3-T1 in CESoPSN 122
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
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