Cisco ASR 9000 Series Instruction Manual

L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000
Series Routers, IOS XR Release 6.3.x
First Published: 2017-09-01
Last Modified: 2018-03-01
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CONTENTS
Preface xxv
PREFACE
Changes to This Document xxv
Obtaining Documentation and Submitting a Service Request xxv
New and Changed VPN Features 1
CHAPTER 1
New and Changed VPN Features 1
The Carrier Ethernet Model 5
CHAPTER 2
Prerequisites for Configuring Layer 2 Ethernet Interfaces 5
Layer 2 Theory and Standards Adherence 6
Ethernet Technology Overview 6
Carrier Ethernet Services 6
Ethernet Wire Service 7
Ethernet Virtual Private Line 8
Ethernet LAN Service 8
Ethernet Flow Point 9
Ethernet Virtual Circuit 9
Ethernet OAM Protocols 9
Layer 2 VPN on Ethernet Interfaces 9
Gigabit Ethernet Protocol Standards Overview 10
IEEE 802.3 Physical Ethernet Infrastructure 10
IEEE 802.3ab 1000BASE-T Gigabit Ethernet 10
IEEE 802.3z 1000 Mbps Gigabit Ethernet 10
IEEE 802.3ae 10 Gbps Ethernet 11
General Ethernet Standards 11
MAC Address 11
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Ethernet MTU 11
Flow Control on Ethernet Interfaces 12
VRRP 12
HSRP 12
Link Autonegotiation on Ethernet Interfaces 13
What is an Ethernet Flow Point? 13
Improving the Scalability of EFPs on Bundle Interfaces 14
EFP CLI Overview 14
Egress EFP Filtering 15
Identifying Frames of an EFP 15
Applying Features 17
Defining Data-Forwarding Behavior 17
802.1Q VLAN 18
802.1Q Tagged Frames 18
Subinterfaces 18
Subinterface MTU 19
VLAN Subinterfaces on Ethernet Bundles 19
Layer 2 VPN on VLANs 19
How to Configure Layer 2 Features on Ethernet Interfaces 20
Default Configuration Values for Gigabit Ethernet and 10-Gigabit Ethernet 20
Configuring Ethernet Interfaces 21
Configuring a 10-Gigabit Ethernet Interface 21
Configuring a Gigabit Ethernet Interface 23
What to Do Next 25
Configuring an Attachment Circuit on an Ethernet Port 25
Configuring Egress EFP Filtering 28
Configuring 802.1Q VLAN Interfaces 30
Configuring 802.1Q VLAN Subinterfaces 30
Configuring Native VLAN 32
Removing an 802.1Q VLAN Subinterface 33
Configuration Examples 34
Configuring an Ethernet Interface: Example 34
Configuring a L2VPN AC: Example 35
Configuring VPWS with Link Bundles: Example 36
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Physical Interfaces (Port mode) 36
Sub Interfaces (EFP mode) 36
Configuring Ethernet Bundle with L2 and L3 Services: Example 37
Configuring VLAN Subinterfaces: Example 37
Where to Go Next 38
Ethernet Features 39
CHAPTER 3
Prerequisites for Implementing Ethernet Features 39
Information About Implementing Ethernet Features 39
Policy Based Forwarding 39
Layer 2 Protocol Tunneling 40
L2PT Features 40
L2PT in the Forward Mode 40
L2PT in the Reverse Mode with Protocol Frame Tagging 42
L2PT Configuration Notes 45
How to Implement Ethernet Features 46
Configuring Policy Based Forwarding 46
Enabling Policy Based Forwarding 46
Configuring Source Bypass Filter 48
Configuration Examples 49
Configuring Policy Based Forwarding: Example 49
Configuring Layer 2 Protocol Tunneling: Example 50
Configuring L2PT in forward mode 50
Configuring L2PT in reverse mode 51
Configuring Link Bundles 53
CHAPTER 4
Feature History for Configuring Link Bundles 53
Prerequisites for Configuring Link Bundles 53
Information About Configuring Link Bundles 54
Link Bundling Overview 54
Characteristics of Link Bundles 55
IEEE 802.3ad Standard 56
Non Revertive Behavior for LACP Bundle Interface 56
QoS and Link Bundling 56
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VLANs on an Ethernet Link Bundle 57
Link Bundle Configuration Overview 57
Nonstop Forwarding During Card Failover 58
Link Failover 58
Bundle Interfaces: Redundancy, Load Sharing, Aggregation 58
How to Configure Link Bundling 58
Configuring Ethernet Link Bundles 58
Configuring VLAN Bundles 62
Configuration Examples for Link Bundles 67
EtherChannel Bundle running LACP: Example 67
Creating VLANs on a Ethernet Bundle: Example 68
ASR 9000 Link Bundles connected to a Cisco 7600 EtherChannel: Example 68
Implementing Point to Point Layer 2 Services 73
CHAPTER 5
Prerequisites for Implementing Point to Point Layer 2 Services 75
Information About Implementing Point to Point Layer 2 Services 75
Layer 2 Virtual Private Network Overview 75
Layer 2 Local Switching Overview 75
ATMoMPLS with L2VPN Overview 76
Virtual Circuit Connection Verification on L2VPN 76
Ethernet over MPLS 76
Ethernet Port Mode 76
VLAN Mode 77
Inter-AS Mode 77
QinQ Mode 78
QinAny Mode 79
Quality of Service 79
High Availability 80
Preferred Tunnel Path 80
Multisegment Pseudowire 80
Pseudowire Redundancy 82
Pseudowire Load Balancing 82
Pseudowire Grouping 82
Ethernet Wire Service 83
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IGMP Snooping 83
IP Interworking 84
AToM iMSG 85
Any Transport over MPLS 86
Control Word Processing 87
High-level Data Link Control over MPLS 87
PPP over MPLS 87
Frame Relay over MPLS 87
MPLS Transport Profile 88
Circuit Emulation Over Packet Switched Network 88
L2VPN Nonstop Routing 90
L2TPv3 over IPv6 90
Overview 90
L2TPv3 over IPv4 91
Dynamic Single-Segment Pseudowire 92
Active and Passive Signaling 92
Functionality of Dynamic Single Segment Pseudowire 92
Prerequisites for Configuring L2VPN Single Segment Pseudowires 93
Restrictions for Configuring L2VPN Single Segment Pseudowires 93
Configuring L2VPN Single Segment Pseudowire 93
EVPN Virtual Private Wire Service (VPWS) 98
Information About EVPN-VPWS Single Homed 98
Prerequisites for EVPN-VPWS 99
Restrictions for EVPN-VPWS 99
How to Implement Point to Point Layer 2 Services 100
Configuring an Interface or Connection for Point to Point Layer 2 Services 100
Configuring Local Switching 101
Configuring Local Connection Redundancy 103
Configuring Static Point-to-Point Cross-Connects 105
Configuring Dynamic Point-to-Point Cross-Connects 107
Configuring Inter-AS 108
Configuring L2VPN Quality of Service 109
Restrictions 109
Configuring an L2VPN Quality of Service Policy in Port Mode 109
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Configuring an L2VPN Quality of Service Policy in VLAN Mode 110
Configuring Multisegment Pseudowire 111
Provisioning a Multisegment Pseudowire Configuration 111
Provisioning a Global Multisegment Pseudowire Description 113
Provisioning a Cross-Connect Description 114
Provisioning Switching Point TLV Security 116
Enabling Multisegment Pseudowires 117
Configuring Pseudowire Redundancy 118
Configuring Point-to-Point Pseudowire Redundancy 118
Forcing a Manual Switchover to the Backup Pseudowire 121
Configuring a Backup Pseudowire 121
Configuring Point-to-Point Pseudowire Redundancy 122
Forcing a Manual Switchover to the Backup Pseudowire 125
Configuring Preferred Tunnel Path 125
Configuring PW Status OAM 126
Enabling Flow-based Load Balancing 127
Enabling Flow-based Load Balancing for a Pseudowire Class 129
Enabling Pseudowire Grouping 130
Setting Up Your Multicast Connections 131
Configuring AToM IP Interworking 133
Configuring PPP IP Interworking 134
Configuring IP Interworking between PPP and Ethernet 137
Configuring MLPPP IP Interworking 140
Configuring Circuit Emulation Over Packet Switched Network 143
Adding CEM attachment circuit to a Pseudowire 143
Associating a Pseudowire Class 144
Enabling Pseudowire Status 147
Configuring a Backup Pseudowire 147
Configuring L2VPN Nonstop Routing 149
Configure MPLS LDP Nonstop Routing 150
Configuring L2TPv3 over IPv6 Tunnels 151
Configuring Neighbor AFI for Pseudowire 151
Configuring L2TPv3 encapsulation and protocol 153
Configuring Source IPv6 address for L2TPv3 over IPv6 tunnel 154
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Configuring Local and Remote Sessions 156
Configuring Local And Remote Cookies 158
Enabling L2TP Static Submode 160
Enabling TOS Reflection in the L2TPv3 Header 161
Configuring TTL for L2TPv3 over IPv6 Tunnels 163
Configuring Traffic Mirroring over L2TPv3 over IPv6 Tunnels 164
Configuring L2TPv3 over IPv4 Tunnels 166
Configuring a Dynamic L2TPv3 Pseudowire 167
Configuring L2TPv3 Encapsulation and Protocol 168
Configuring L2TP Control-Channel Parameters 169
Configuring L2VPN Single Segment Pseudowire 172
Configuring L2VPN Global Parameters 172
Configuring L2VPN VPWS SS-PW 174
Configuring L2VPN MS-PW Address Family Under BGP 176
Verifying Single-Segment Pseudowires 177
Displaying Information about the L2VPN Single-Segment Pseudowires 177
How to Configure EPVN-VPWS 177
Configuring L2VPN EVPN Address Family Under BGP 177
Configuring EVPN-VPWS 178
Configuring an Access Pseudowire using EVPN-VPWS 180
Configuration Examples for Point to Point Layer 2 Services 181
L2VPN Interface Configuration: Example 182
Local Switching Configuration: Example 182
Local Connection Redundancy Configuration: Example 182
Point-to-Point Cross-connect Configuration: Examples 183
Inter-AS: Example 183
L2VPN Quality of Service: Example 185
Pseudowires: Examples 185
Configuring Dynamic Pseudowires at T-PE1 Node: Example 186
Configuring Dynamic Pseudowires at S-PE1 Node: Example 186
Configuring Dynamic Pseudowires at T-PE2 Node: Example 186
Configuring Dynamic Pseudowires and Preferred Paths at T-PE1 Node: Example 187
Configuring Dynamic Pseudowires and Preferred Paths at S-PE1 Node: Example 187
Configuring Dynamic Pseudowires and Preferred Paths at T-PE2 Node: Example 187
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Configuring Static Pseudowires at T-PE1 Node: Example 188
Configuring Static Pseudowires at S-PE1 Node: Example 188
Configuring Static Pseudowires at T-PE2 Node: Example 188
Preferred Path: Example 188
MPLS Transport Profile: Example 189
Configuring Preferred Tunnel Path: Example 189
Configuring PW Status OAM: Example 189
Viewing Pseudowire Status: Example 189
show l2vpn xconnect 189
show l2vpn xconnect detail 189
Configuring Any Transport over MPLS: Example 190
Configuring AToM IP Interworking: Example 191
Configuring PPP IP Interworking: Example 191
Configuring cHDLC IP Interworking: Example 191
Configuring MLPPP IP Interworking: Example 192
Configuring Circuit Emulation Over Packet Switched Network: Example 192
Configuring L2VPN Nonstop Routing: Example 193
Enabling Pseudowire Grouping: Example 194
Configuring L2TPv3 over IPv6 Tunnels: Example 194
Configuring Neighbor AFI for Pseudowire: Example 194
Configuring L2TPv3 encapsulation and protocol: Example 194
Configuring Source IPv6 address for L2TPv3 over IPv6 tunnel: Example 194
Configuring Local and Remote Sessions: Example 194
Configuring Local and Remote Cookies: Example 195
Enabling L2TP Static Submode: Example 195
Enabling TOS Reflection in the L2TPv3 Header: Example 196
Configuring TTL for L2TPv3 over IPv6 Tunnels: Example 196
Configuring Traffic Mirroring over L2TPv3 over IPv6 Tunnels: Example 196
Configuring L2TPv3 over IPv4 Tunnels: Example 197
Configuring a Dynamic L2TPv3 Pseudowire 197
Configuring L2TPv3 Encapsulation and Protocol: Example 198
Configuring L2TP Control-Channel Parameters: Example 199
Configuration Examples for EVPN-VPWS 199
Configuring EVPN-VPWS: Example 199
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