Cisco ASR 920 series User manual

Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
First Published: July 29, 2014
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©2014 Cisco Systems, Inc. All rights reserved.

CONTENTS
CHAPTER 1 Trunk EFP Support 1
Finding Feature Information 1
Restrictions for Trunk EFP Support 1
Information About Trunk EFP Support 2
Benefits of Trunk EFP Support 2
Ethernet Flow Points 2
Trunk Ports 3
How to Enable Trunk EFP Support 3
Enabling Trunk EFP Support 3
Verifying the Trunk EFP Support Configuration 5
Configuration Examples for Trunk EFP Support 6
Example: Configuring Trunk EFP Support 6
Example: Verifying the Trunk EFP Support Configuration 7
Additional References 7
Feature Information for Trunk EFP Support 9
CHAPTER 2 Ethernet Virtual Connections Configuration 11
Finding Feature Information 12
Supported EVC Features 12
Restrictions for Ethernet Virtual Connections Configuration 13
Ethernet Virtual Connections 14
Service Instances and EFPs 14
Encapsulation 15
Ethertype 17
Bridge Domains 18
Split-Horizon 18
Rewrite Operations 19
Static MAC Addresses 19
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Layer 2 Protocol Features 20
Configuring EFPs 20
Default EVC Configuration 20
Configuration Guidelines 20
Creating Service Instances 21
Creating a Trunk EFP 22
Configuring Asymmetric EFPs 24
Configuration Examples 25
Example for Configuring a Service Instance 25
Example for Encapsulation Using a VLAN Range 25
Configuration Example for Larger String VLAN in Encapsulation 26
Example for Two Service Instances Joining the Same Bridge Domain 26
Example for Bridge Domains and VLAN Encapsulation 26
Example for Rewrite 27
Example for Split Horizon 27
Example for Hairpinning 27
Example for Egress Filtering 28
Configuring Examples for Asymmetric EFPs 28
Configuring Other Features on EFPs 29
EFPs and EtherChannels 29
Layer 2 Protocol Peering 30
Layer 2 Protocol Forwarding 30
Configuring IEEE 802.1Q Tunneling and Layer 2 Protocol Tunneling Using EFPs 30
802.1Q Tunneling (QinQ) 30
Method 1 31
Method 2 32
Example for VLAN Translation Configurations 32
Example for Ingress Mapping of C-CoS to S-CoS 33
Example for Ingress Mapping of C-CoS to C-CoS 33
Example for Egress Classification Based on CoS 34
Layer 2 Protocol Tunneling 34
EFPs and Ethernet over Multiprotocol Layer Switching (EoMPLS) 38
Bridge Domain Routing 38
EFPs and Trunk Port MAC Addresses 39
EFPs and MSTP 39
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L3 Unicast and Multicast Routing on a Bridge Domain with Multiple EFPs 40
Example for Configuring L3 Multicast Routing on a Bridge Domain 40
Cross-Connect on EFP Interfaces 40
Restrictions 41
Configuring Cross-Connect on an EFP Interface 41
MAC Address Forwarding, Learning and Aging on EFPs 42
Configuring a Static MAC Address 43
Limitations 43
Configuring a Static MAC Address 43
Configuring a Multicast Static MAC Address 45
Monitoring EVC 46
Additional References 49
Feature Information for Ethernet Virtual Connections Configuration 50
CHAPTER 3 EVC Local Connect 51
Finding Feature Information 51
Information About EVC Local Connect 52
Benefits of EVC Local Connect 52
Prerequisites for EVC Local Connect 52
Restrictions for EVC Local Connect 52
How to Configure EVC Local Connect 53
Configuring EVC Local Connect 53
Configuring EVC Local Connect as Interworking VLAN 53
Verifying EVC Local Connect Configuration 54
Verifying Traffic Statistics 54
Configuration Examples 55
Example: Configuration Example for EVC Local Connect 55
Example: Configuration Example for EVC Local Connect as Interworking VLAN 56
Use Cases or Deployment Scenarios 56
Additional References for EVC Local Connect 57
Feature Information for EVC Local Connect 58
CHAPTER 4 Using Ethernet Fault Detection 59
Information about Ethernet Fault Detection 59
Prerequisites for EFD 60
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Limitations and Restrictions for EFD 60
Enabling Ethernet Fault Detection for a Service 61
Configuration Example for EFD 62
CHAPTER 5 Transparent CFM 65
Information About Transparent CFM 65
EFP (Q-in-Q interfaces with dot1q or dot1ad C-UNI) 65
Benefits of Transparent CFM 66
S-VLAN Component with Transparent CFM Support 66
C-VLAN Component with Transparent CFM Support on C-VLANs 66
Prerequisites for Transparent CFM 66
Restrictions for Transparent CFM 66
Configuring Transparent CFM 67
Configuring Transparent CFM on EFP 68
Configuration Examples for Transparent CFM 69
Example: Configuration of Transparent CFM on EFP 69
Example: Configuration of Transparent CFM 70
CHAPTER 6 VLAN Translation with QoS 71
Benefits of VLAN Translation 71
Scenarios showing VLAN Translation 72
Limitations for VLAN Translation with QoS 73
Configuring 1:1 VLAN Translation 74
Configuring 2:1 VLAN Translation 75
Configuring policy for ingress QoS 76
Configuration Example for 1:1 VLAN Translation 77
Configuration Example for 2:1 VLAN Translation 78
Configuration Example for policing ingress QoS 78
Configuration Verifications for VLAN Translation with QoS 78
Verifying the VLAN configuration 78
Verifying policy-map on ingress QoS 78
Verifying policy-map on egress QoS 79
Verifying the QoS Labels 79
Verifying Egress TCAM Details 80
Verifying TCAM Index Details 80
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CHAPTER 7 Configuring MAC Address Limiting on Service Instances Bridge Domains and EVC Port
Channels 81
Finding Feature Information 81
Prerequisites for MAC Address Limiting on Service Instances Bridge Domains and EVC Port
Channels 82
Restrictions for MAC Address Limiting on Service Instances Bridge Domains and EVC Port
Channels 82
Information About MAC Address Limiting on Service Instances Bridge Domains and EVC Port
Channels 82
Ethernet Virtual Circuits, Service Instances, and Bridge Domains 82
EVCs on Port Channels 83
MAC Security and MAC Addressing 83
MAC Address Permit List 83
MAC Address Deny List 84
MAC Address Limiting and Learning 84
Static and Dynamic MAC Addresses 85
Dynamic MAC Address Learning 85
MAC Address Limiting on Service Instances 85
MAC Address Limiting for Bridge Domains 85
Relationship Between the MAC Address Limit on a Bridge Domain and on a Service
Instance 85
MAC Move and MAC Locking 86
Violation Response Configuration 86
MAC Address Aging Configuration 87
Sticky MAC Address Configurations 88
Aging for Sticky Addresses 88
Transitions 88
MAC Security Enabled on a Service Instance 88
MAC Security Disabled on a Service Instance 89
Service Instance Moved to a New Bridge Domain 89
Service Instance Removed from a Bridge Domain 89
Service Instance Shut Down Due to Violation 89
Interface Service Instance Down Linecard OIR Removed 89
Interface Service Instance Re-activated Linecard OIR Inserted 89
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MAC Address Limit Decreased 89
Sticky Addresses Added or Removed on a Service Instance 90
How to Configure MAC Address Limiting on Service Instances Bridge Domains and EVC
Port Channels 90
Enabling MAC Security on a Service Instance 90
Enabling MAC Security on an EVC Port Channel 92
Configuring a MAC Address Permit List 93
Configuring a MAC Address Deny List 96
Configuring MAC Address Limiting on a Bridge Domain 98
Configuring MAC Address Limiting on a Service Instance 99
Configuring a MAC Address Violation 101
Configuring MAC Address Aging 103
Configuring a Sticky MAC Address 104
Displaying the MAC Security Status of a Specific Service Instance 106
Displaying the Service Instances with MAC Security Enabled 107
Displaying the Service Instances with MAC Security Enabled on a Specific Bridge
Domain 108
Showing the MAC Addresses of All Secured Service Instances 108
Showing the MAC Addresses of a Specific Service Instance 109
Showing the MAC Addresses of All Service Instances on a Specific Bridge Domain 110
Showing the MAC Security Statistics of a Specific Service Instance 110
Showing the MAC Security Statistics of All Service Instances on a Specific Bridge
Domain 111
Showing the Last Violation Recorded on Each Service Instance on a Specific Bridge
Domain 112
Clearing All Dynamically Learned MAC Addresses on a Service Instance 113
Clearing All Dynamically Learned MAC Addresses on a Bridge Domain 114
Configuration Examples for MAC Address Limiting on Service Instances and Bridge Domains
and EVC Port Channels 115
Example Enabling MAC Security on a Service Instance 115
Example Enabling MAC Security on an EVC Port Channel 115
Example Configuring a MAC Address Permit List 115
Example Configuring a MAC Address Deny List 116
Example Configuring MAC Address Limiting on a Bridge Domain 116
Example Configuring a MAC Address Limit on a Service Instance 116
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Example Configuring a MAC Address Violation Response 116
Example Configuring MAC Address Aging 117
Example Configuring a Sticky MAC Address 117
Example Displaying the MAC Addresses on a Specific Secure Service Instance 117
Example Displaying the Last Violation on a Specific Service Instance 117
Example Displaying the MAC Security Status of a Specific Service Instance 117
Example Displaying the MAC Addresses of All Secured Service Instances 118
Example Displaying the MAC Security Statistics of All Service Instances 118
Example: Displaying the MAC Addresses on All Service Instances for a Bridge Domain 118
Example Displaying the Secured Service Instances for a Specific Bridge Domain 118
Additional References 119
Feature Information for MAC Address Limiting on Service Instances Bridge Domains and EVC
Port Channels 120
CHAPTER 8 Configuring Ethernet Connectivity Fault Management in a Service Provider Network 123
Finding Feature Information 124
Prerequisites for Configuring Ethernet CFM in a Service Provider Network 124
Restrictions for Configuring Ethernet CFM in a Service Provider Network 124
Information About Configuring Ethernet CFM in a Service Provider Network 125
Ethernet CFM 125
Benefits of Ethernet CFM 125
Customer Service Instance 125
Maintenance Domain 126
Maintenance Associations and Maintenance Points 127
Maintenance Point 129
Maintenance Endpoints 129
Maintenance Intermediate Points 130
CFM Messages 131
Cross-Check Function 132
SNMP Traps 132
Ethernet CFM and Ethernet OAM Interaction 133
Ethernet Virtual Circuit 133
OAM Manager 133
CFM over Bridge Domains 133
How to Set Up Ethernet CFM in a Service Provider Network 134
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Designing CFM Domains 134
Examples 136
What to Do Next 136
Configuring Ethernet CFM 137
Provisioning the Network 137
Provisioning the Network on the CE-A 137
Provisioning the Network on the U-PE A 140
Provisioning the Network on the PE-AGG A 144
Provisioning the Network on the N-PE A 147
Provisioning the Network on the CE-B 150
Provisioning the Network on the U-PE B 153
Provisioning the Network on the PE-AGG B 156
Provisioning the Network on the N-PE B 159
Provisioning Service 162
Provisioning Service on the CE-A 162
Provisioning Service on the U-PE A 166
Provisioning Service on the PE-AGG A 170
Provisioning Service on the N-PE A 173
Provisioning Service on the CE-B 177
Provisioning Service on the U-PE B 180
Provisioning Service on the PE-AGG B 184
Provisioning Service on the N-PE B 187
Configuring and Enabling the Cross-Check Function 190
Configuring and Enabling Cross-Checking for an Inward Facing MEP on the U
PE-A 190
Configuring and Enabling Cross-Checking for an Inward Facing MEP on the U
PE-B 192
Configuring and Enabling Cross-Checking for an Outward Facing MEP on the
CE-A 194
Configuring and Enabling Cross-Checking for an Outward Facing MEP on the
CE-B 195
Configuring CFM over Bridge Domains 197
Troubleshooting Tips 202
Configuring Ethernet OAM Interaction with CFM 202
Configuring the OAM Manager 202
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Enabling Ethernet OAM 204
Configuration Examples for Configuring Ethernet CFM in a Service Provider Network 205
Example: Provisioning a Network 205
Example: Provisioning Service 207
Additional References 210
Feature Information for Configuring Ethernet CFM in a Service Provider Network 211
Glossary 211
CHAPTER 9 CFM Configuration over EFP Interface with Cross Connect Feature 213
Finding Feature Information 213
Restrictions for CFM Configuration over EFP Interface with Cross Connect Feature 214
Configuring CFM over EFP with Cross Connect 214
Configuring CFM over EFP Interface with Cross Connect—Basic Configuration 214
Example for Configuring CFM over EFP Interface with Cross Connect—Basic
Configuration 216
Configuring CFM over EFP Interface with Cross Connect—Single Tag VLAN Cross
Connect 217
Example for Configuring CFM over EFP Interface with Cross Connect—Single Tag VLAN
Cross Connect 218
Configuring CFM over EFP Interface with Cross Connect—Double Tag VLAN Cross
Connect 219
Example for Configuring CFM over EFP Interface with Cross Connect—Double Tag
VLAN Cross Connect 220
Configuring CFM over EFP Interface with Cross Connect—Selective QinQ Cross Connect 221
Example for Configuring CFM over EFP Interface with Cross Connect—Selective QinQ
Cross Connect 222
Configuring CFM over EFP Interface with Cross Connect—Port-Based Cross Connect
Tunnel 223
Example for Configuring CFM over EFP Interface with Cross Connect—Port-Based Cross
Connect Tunnel 224
Configuring CFM over EFP Interface with xconnect—Port Channel-Based xconnect
Tunnel 224
Example for Configuring CFM over EFP Interface with xconnect—Port Channel-Based
xconnect Tunnel 226
Verifiying CFM over EFP 227
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Troubleshooting CFM Features 229
Additional References 230
Feature Information for CFM Configuration over EFP Interface with Cross Connect
Feature 231
CHAPTER 10 G.8032 and CFM Support for Microwave Adaptive Bandwidth 233
Finding Feature Information 233
Prerequisites for G.8032 and CFM Microwave Adaptive Bandwidth Support 234
About G.8032 and CFM Support for Microwave Adaptive Bandwidth 234
Microwave Adaptive Bandwidth Feature Functionality 234
Fixed Versus Adaptive Bandwidth Modulation and the Microwave Adaptive Bandwidth
Feature 234
Adaptive Bandwidth Multi-hop Extensions 235
How to Configure G.8032 and CFM Support for Microwave Adaptive Bandwidth 237
Creating the Ethernet Microwave Event and Using G.8032 to Specify Appropriate
Actions 237
Modifying Ethernet Microwave Event Settings 239
Configuration Examples for G.8032 and CFM Support for Microwave Adaptive
Bandwidth 241
Example: Configuring the Ethernet Microwave Event 241
Example: Verifying the Ethernet Microwave Event Configuration 241
Example: Signal Degraded Event Syslog Messages 243
Example: Configuring the TRUNK EFP with ACM Microwave 243
Additional References for G.8032 and CFM Support for Microwave Adaptive Bandwidth 244
Feature Information for G.8032 and CFM Support for Microwave Adaptive Bandwidth 245
CHAPTER 11 Configuring Ethernet CFM 247
Finding Feature Information 247
Prerequisites for Configuring Ethernet CFM 247
Information About Configuring Ethernet CFM 248
Ethernet CFM 248
Benefits of Ethernet CFM 248
Maintenance Associations 248
Maintenance Domains 249
Maintenance Points 250
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Maintenance Association Endpoints 250
Ethernet CFM Messages 250
Cross-Check Function 252
SNMP Traps 252
How to Configure Ethernet CFM 252
Designing CFM Domains 252
Examples 254
Configuring Ethernet CFM 256
Provisioning the Network (CE-A) 256
Provisioning the Network (CE-B) 258
Provisioning Service (CE-A) 260
Provisioning Service (CE-B) 264
Configuring and Enabling the Cross-Check Function (CE-A) 267
Configuring and Enabling the Cross-Check Function (CE-B) 269
Configuring Multi-UNI CFM MEPs in the Same VPN 271
Restrictions for Configuring Multi-UNI CFM MEPs in the Same VPN 272
Configuring Multi-UNI CFM MEPs in the Same VPN 272
Verifying the Configuration of Multi-UNI CFM MEPs in the Same VPN 274
Configuration Examples for Configuring Ethernet 275
Example: Provisioning a Network 275
Example: Provisioning Service 278
Additional References 280
Feature Information for Configuring Ethernet CFM 282
Glossary 282
CHAPTER 12 Configuring Ethernet Local Management Interface at a Provider Edge 285
Prerequisites for Configuring Ethernet Local Management Interface at a Provider Edge 285
Restrictions for Configuring Ethernet Local Management Interface at a Provider Edge 286
Information About Configuring Ethernet Local Management Interface at a Provider Edge 286
Ethernet Virtual Circuits Overview 286
Ethernet LMI Overview 286
Ethernet CFM Overview 287
OAM Manager Overview 287
Benefits of Ethernet LMI at a Provider Edge 287
How to Configure Ethernet Local Management Interface at a Provider Edge 288
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Configuring Ethernet LMI Interaction with CFM 288
Configuring the OAM Manager 288
Enabling Ethernet LMI 293
Displaying Ethernet LMI and OAM Manager Information 294
Configuration Examples for Ethernet Local Management Interface at a Provider Edge 296
Example: Ethernet OAM Manager on a PE Device Configuration 296
Example: Ethernet LMI on a CE Device Configuration 297
Feature Information for Configuring Ethernet Local Management Interface at a Provider
Edge 298
CHAPTER 13 Using Ethernet Operations Administration and Maintenance 299
Information About Using Ethernet Operations Administration and Maintenance 299
Ethernet OAM 299
OAM Client 300
OAM Sublayer 300
Benefits of Ethernet OAM 301
Cisco Implementation of Ethernet OAM 301
OAM Features 301
OAM Messages 303
IEEE 802.3ah Link Fault RFI Support 303
Ethernet Connectivity Fault Management 304
How to Set Up and Configure Ethernet Operations Administration and Maintenance 304
Enabling Ethernet OAM on an Interface 304
Disabling and Enabling a Link Monitoring Session 305
Disabling a Link Monitoring Session 305
Enabling a Link Monitoring Session 306
Stopping and Starting Link Monitoring Operations 307
Stopping Link Monitoring Operations 307
Starting Link Monitoring Operations 309
Configuring Link Monitoring Options 310
Configuring Global Ethernet OAM Options Using a Template 312
Configuring a Port for Link Fault RFI Support 315
Configuration Examples for Ethernet Operations Administration and Maintenance 316
Feature Information for Using Ethernet Operations, Administration, and Maintenance 319
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CHAPTER 14 ITU-T Y.1731 Performance Monitoring in a Service Provider Network 321
Prerequisites for ITU-T Y.1731 Performance Monitoring in a Service Provider Network 321
Restrictions for ITU-T Y.1731 Performance Monitoring in a Service Provider Network 321
Information About ITU-T Y.1731 Performance Monitoring in a Service Provider Network 322
Frame Delay and Frame-Delay Variation 322
Benefits of ITU-T Y.1731 Performance Monitoring 324
How to Configure ITU-T Y.1731 Performance Monitoring in a Service Provider Network 324
Configuring Performance Monitoring Parameters 324
Configuration Examples for Configuring ITU-T Y.1731 Performance Monitoring Functions 325
Example: Configuring Performance Monitoring 325
Feature Information for ITU-T Y.1731 Performance Monitoring in a Service Provider
Network 325
CHAPTER 15 Using Link Layer Discovery Protocol in Multivendor Networks 327
Finding Feature Information 327
Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks 328
Restrictions for Using Link Layer Discovery Protocol in Multivendor Networks 328
Information About Using Link Layer Discovery Protocol in Multivendor Networks 328
IEEE 802.1ab LLDP 328
LLDP-MED 329
Classes of Endpoints 329
Types of Discovery Supported 330
Benefits of LLDP-MED 331
TLV Elements 331
Benefits of LLDP 332
How to Configure Link Layer Discovery Protocol in Multivendor Networks 332
Enabling and Disabling LLDP Globally 332
Enabling LLDP Globally 332
Disabling LLDP Globally 333
Disabling and Enabling LLDP on a Supported Interface 334
Disabling LLDP on a Supported Interface 334
Enabling LLDP on a Supported Interface 335
Setting LLDP Packet Hold Time 336
Setting LLDP Packet Frequency 337
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Monitoring and Maintaining LLDP in Multivendor Networks 338
Enabling and Disabling LLDP TLVs 339
Enabling LLDP TLVs 339
Disabling LLDP TLVs 340
Enabling and Disabling LLDP-MED TLVs 341
Enabling LLDP-MED TLVs 341
Disabling LLDP-MED TLVs 342
Configuration Examples for Link Layer Discovery Protocol in Multivendor Networks 344
Example Configuring LLDP on Two Devices 344
Additional References for Using Link Layer Discovery Protocol in Multivendor Networks 346
Feature Information for Link Layer Discovery Protocol in Multivendor Networks 347
CHAPTER 16 Configuring IEEE 802.3ad Link Bundling 349
Finding Feature Information 349
Prerequisites for Configuring IEEE 802.3ad Link Bundling 349
Restrictions for Configuring IEEE 802.3ad Link Bundling 350
Information About Configuring IEEE 802.3ad Link Bundling 350
Gigabit EtherChannel 350
Port-Channel and LACP-Enabled Interfaces 350
IEEE 802.3ad Link Bundling 351
Benefits of IEEE 802.3ad Link Bundling 352
LACP Enhancements 352
LACP for Gigabit Interfaces 352
Features Supported on Gigabit EtherChannel Bundles 353
Guidelines for LACP for Gigabit Interfaces Configuration 354
Understanding LACP 1:1 Redundancy 355
How to Configure IEEE 802.3ad Link Bundling 355
Enabling LACP 355
Configuring a Port Channel 357
Configuring the EtherChannel Min-Links Feature 358
Configuring LACP (802.3ad) for Gigabit Interfaces 360
Configuring LACP 1:1 Redundancy with Fast-Switchover 362
Setting LACP System Priority and Port Priority 364
Adding and Removing Interfaces from a Link Bundle 366
Removing a Channel Group from a Port 367
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Monitoring LACP Status 368
Troubleshooting Tips 368
Displaying Gigabit EtherChannel Information 369
Configuration Examples for IEEE 802.3ad Link Bundling 374
Example: Configuring LACP for Gigabit Interfaces 374
Example Associating a Channel Group with a Port Channel 374
Example Adding and Removing Interfaces from a Bundle 376
Example Monitoring LACP Status 377
Example: Displaying Port-Channel Interface Information 378
Additional References Configuring IEEE 802.3ad Link Bundling 378
Feature Information for Configuring IEEE 802.3ad Link Bundling 379
CHAPTER 17 Configuring Switched Port Analyzer 381
Finding Feature Information 381
Prerequisites for Configuring Local Span and RSPAN 381
Restrictions for Local Span and RSPAN 382
Understanding Local SPAN and RSPAN 383
Information About Local SPAN Session and RSPAN Session 383
Local SPAN Session 383
Local SPAN Traffic 384
RSPAN Session 384
RSPAN Traffic 384
Destination Interface 385
Source Interface 385
Traffic Directions 386
Configuring Local SPAN and RSPAN 389
Configuring Sources and Destinations for Local SPAN 389
Removing Sources or Destinations from a Local SPAN Session 390
Configuring RSPAN Source Session 391
Configuring RSPAN Destination Session 393
Removing Sources or Destinations from a RSPAN Session 394
Sample Configurations 395
Configuration Example: Local SPAN 395
Configuration Example: Removing Sources or Destinations from a Local SPAN Session 395
Configuration Example: RSPAN Source 396
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Configuration Example: RSPAN Destination 396
Verifying Local SPAN and RSPAN 396
Additional References 397
Feature Information for Local SPAN and RSPAN 398
CHAPTER 18 Configuring IEEE 802.1ad 401
Finding Feature Information 402
Prerequisites for 802.1ad 402
Restrictions for 802.1ad 402
Rewrite Configuration Model for 802.1ad Ports 403
Information About 802.1ad 403
802.1ad Ports 403
Service Provider Bridges 404
S-Bridge Component 404
C-Bridge Component 405
NNI Port 405
MAC Addresses for Layer 2 Protocols 405
Bridge Protocol Data Units Destination MAC Addresses 407
How to Configure 802.1ad 409
Configuring the IEEE 802.1ad on Service Instances 409
Configuring the IEEE 802.1ad on Trunk EFP Service Instances 412
Configuring the IEEE 802.1ad on Cross-Connect on EFP 414
Verifying IEEE 802.1ad 416
Additional References 417
Feature Information for IEEE 802.1ad 418
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CHAPTER 1
Trunk EFP Support
The Trunk EFP Support feature provides support for Ethernet flow points (EFPs) on trunk ports. A trunk
port allows a range of VLANs to be forwarded on a given interface while still maintaining data-plane
segmentation between the VLANs.
•Finding Feature Information, page 1
•Restrictions for Trunk EFP Support, page 1
•Information About Trunk EFP Support, page 2
•How to Enable Trunk EFP Support, page 3
•Configuration Examples for Trunk EFP Support, page 6
•Additional References, page 7
•Feature Information for Trunk EFP Support, page 9
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and
feature information, see Bug Search Tool and the release notes for your platform and software release. To
find information about the features documented in this module, and to see a list of the releases in which each
feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Restrictions for Trunk EFP Support
•The rewrite ingress tag pop 1 symmetric command is the only rewrite command that is supported for
trunk EFP configurations. The rewrite ingress tag pop 1 symmetric command must be included in the
configuration when the Trunk EFP Support feature is enabled.
•A bridge-domain number that is part of a trunk EFP configuration cannot be shared by other EFPs under
the same port or interface.
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•Only one trunk EFP can be configured under one port or interface.
•All features configured on a trunk EFP (other than encapsulations and bridge-domain assignments) are
applied uniformly to all VLANs and bridge domains. If a feature requires VLAN-specific or
bridge-domain-specific configuration values, the feature cannot be applied on the trunk EFP. Those
special VLANs or bridge domains must be removed from the EFP trunk to form individual EFPs.
Information About Trunk EFP Support
Benefits of Trunk EFP Support
The Carrier Ethernet infrastructure supports the following types of Ethernet flow points (EFPs):
•Static EFPs that are user-configurable.
•Dynamic EFPs that are created and maintained during a Cisco Intelligent Services Gateway ( ISG)
session.
With this feature, a new EFP type has been added that is intended for use on a trunk port.
A trunk port allows a range of VLANs to be forwarded on a given interface while maintaining data-plane
segmentation between the VLANs.
Trunk EFP (with or without port channel) supports encapsulation of up to 1000 VLANs.Note
Like a static EFP, this new type of EFP is user-configurable via the service instance trunk command, the
encapsulation command, and the bridge-domain from-encapsulation command when the Trunk EFP
Support feature is enabled.
Ethernet Flow Points
An Ethernet flow point (EFP) is a forwarding decision point in the provider edge (PE) router, which gives
network designers flexibility to make many Layer 2 flow decisions within the interface. Many EFPs can be
configured on a single physical port. (The number varies from one device to another.) EFPs are the logical
demarcation points of an Ethernet virtual connection (EVC) on an interface. An EVC that uses two or more
user network interfaces (UNIs) requires an EFP on the associated ingress and egress interfaces of every device
that the EVC passes through.
EFPs can be configured on any Layer 2 traffic port; however, they are usually configured on UNI ports. The
following parameters (matching criteria) can be configured on the EFP:
•Frames of a specific VLAN, a VLAN range, or a list of VLANs (100-150 or 100,103,110)
•Frames with no tags (untagged)
•Frames with identical double-tags (VLAN tags) as specified
•Frames with identical Class of Service (CoS) values
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Trunk EFP Support
Information About Trunk EFP Support