Cisco Nexus 7000 Series Manuale utente

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

First Published: 2016-11-24

Last Modified: --

Americas Headquarters

Cisco Systems, Inc.

170 West Tasman Drive

San Jose, CA 95134-1706

USA

http://www.cisco.com

Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 527-0883

CONTENTS

CHAPTER 1

Preface 1

Audience 1

Document Conventions 1

Related Documentation 3

Documentation Feedback 3

Obtaining Documentation and Submitting a Service Request 3

CHAPTER 2

New and Changed Information 5

CHAPTER 3

Overview 7

VXLAN Overview 7

VXLAN Flood and Learn 8

VXLAN MAC Distribution 8

VXLAN Tunnel Endpoint 9

Virtual Network Identifier (VNI) 9

VXLAN BGP EVPN Control Plane 10

CHAPTER 4

Configuring VXLAN Flood and Learn 13

Information About VXLAN 13

VXLAN with vPC Overview 13

VXLAN Layer 2 Gateway 14

VXLAN Layer 3 Gateway 14

VXLAN Licensing Information 17

Guidelines and Limitations for VXLAN 17

Considerations for VXLAN Deployment 19

vPC Considerations for VXLAN Deployment 19

Network Considerations for VXLAN Deployments 21

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

iii

Considerations for the core VRF 22

ISSU Support 22

Configuring VXLAN 23

Enabling VXLANs 23

Configuring VNI Service Instances 24

Mapping VLAN to VNI 24

Creating an VTEP and NVE Interface 25

Configuring vPC Peer-link 26

Configuring L3 Interface on VXLAN Tunnel/Hypervisor VLAN 26

Configuring L3 Interface for IP Cloud Connectivity 27

Configuring L3 Interface on Tenant Bridge-Domains/VNIs in L3 Gateway 27

Disabling VXLANs 28

Verifying the VXLAN Configuration 29

Configuration Examples 30

Example of VXLAN Flood and Learn Configuration 30

Example of Verifying VXLAN Flood and Learn Configuration 32

Feature History for VXLAN Flood and Learn 37

CHAPTER 5

Configuring VXLAN BGP EVPN 39

Information About VXLAN BGP EVPN 39

Introducing IP Fabric Overlays (VXLAN) 39

Realizing Layer-2 and Layer-3 Multi-Tenancy 42

Fabric Overlay Control-Plane (MP-BGP EVPN) 43

End Host and Subnet Route Distribution 45

ARP Suppression 50

Performing End Host Detection, Deletion and Move 52

Multi-Destination Traffic 54

Guidelines and Limitations for VXLAN BGP EVPN 54

Configuring VXLAN BGP EVPN 56

BGP EVPN and Overlay Configuration 56

Feature History for VXLAN BGP EVPN 62

CHAPTER 6

Configuring ACI WAN Interconnect 63

VXLAN EVPN - MPLS L3VPN for ACI Fabric 63

Prerequisites for Configuring ACI WAN Interconnect 63

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

Contents

Feature History for ACI WAN Interconnect 63

Overview of VXLAN EVPN - MPLS L3VPN for ACI Fabric 64

Spine –DCI Connectivity 66

Spine –DCI BGP EVPN Session 66

OpFlex DCI Auto-Configuration 69

Interconnect Policy Provisioning (IPP) 70

OpFlex Peering and Multi-POD 70

DCI Auto-Configuration Scenario 71

Show and Debug Command Examples 75

CHAPTER 7

Campus Fabric 81

Overview of Campus Fabric 81

VXLAN Encapsulation for Layer-3 LISP Configuration 84

Feature History for Campus Fabric 86

CHAPTER 8

Campus Fabric Interconnect - MPLS L3VPN 89

Prerequisites of Campus Fabric Interconnect—MPLS L3VPN 89

Information About Campus Fabric Interconnect—MPLS L3VPN 90

Campus Fabric Architecture—Fabric 1 91

Traffic Flow Between Fabrics—Campus Fabric Interconnect 91

How to Configure Campus Fabric Interconnect—MPLS L3VPN 92

Feature Set Configuration 92

Campus Fabric Configuration 92

Campus Fabric Interconnect Configuration 93

Verifying Campus Fabric Interconnect—MPLS L3VPN 94

Verifying MPLS LDP Configuration 94

Verifying MPLS LDP Neighbor Configuration 94

Verifying MPLS Label Switching VRF Information 95

Feature History for Campus Fabric Interconnect—MPLS L3VPN 95

CHAPTER 9

LISP Support for Disjointed RLOC Domains 97

Overview of LISP Support for Disjointed RLOC Domains 97

Prerequisites for LISP Support for Disjointed RLOC Domains 97

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

Contents

Information About LISP Support for Disjointed RLOC Domains 97

LISP Map-Server 98

LISP RTR 98

Workflow of LISP Support for Disjointed RLOC Domains 99

How to Configure LISP Support for Disjointed RLOC Domains 100

PxTR 1 or RTR Configuration 100

PxTR 1 or RTR Configuration—RTR Locator-Set Inheritance 102

Map-Server Configuration 103

Verifying LISP Support for Disjointed RLOC Domains 103

Testing Reachability from xTR 1 in Site A to the xTR in Site B 103

Testing Reachability from PxTR 1 to the xTR in Site B 103

EID Space Details in the Map-Server/Map-Resolver (MSMR) 104

Verify LISP map-cache Details on PxTR 1 105

Feature History for LISP Support for Disjointed RLOC Domains 105

CHAPTER 10

PBR support for the VXLAN BGP EVPN fabric 107

Prerequisites for PBR Support for the VXLAN BGP EVPN Fabric 107

Guidelines and Limitations for PBR Support for the VXLAN BGP EVPN Fabric 107

Information About PBR Support for the VXLAN BGP EVPN Fabric 108

Workflow of PBR Support for the VXLAN BGP EVPN Fabric 108

PBR Rules on L1 and L2 (Enabled on BDI10 and BDI20) 109

PBR Rules on the Service Leaf Switch 109

How to Configure PBR Support for the VXLAN BGP EVPN Fabric 109

Enable PBR Configurations on L1, L2 and the Service Leaf Switch 110

Verifying PBR Support for VXLAN BGP EVPN Fabric 110

Verifying PBR Route Map Policy Configuration on the BDI 111

Verifying PBR Route Map Policy Details 111

Feature History for PBR Support for the VXLAN BGP EVPN Fabric 111

CHAPTER 11

VXLAN BGP EVPN and OTV Interoperation 113

Prerequisites for VXLAN BGP EVPN and OTV Interoperation 113

Guidelines and Limitations for VXLAN BGP EVPN and OTV Interoperation 114

Information About VXLAN BGP EVPN and OTV Interoperation 114

Sample Topologies and Workflow of the VXLAN BGP EVPN and OTV Interoperation 115

Layer 2 Switching 116

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

Contents

Control Plane 117

Layer 3 Unicast Routing 118

Layer 2 Multicast Forwarding and Layer 3 Multicast Routing 119

How to Configure VXLAN BGP EVPN and OTV Interoperation, and OTV with BDI 121

Configure VXLAN BGP EVPN and OTV Interoperation on the Border Leaf Switches in DC-1

and DC-2 121

Configure OTV with BDI Configuration on the Border Switches in DC-4 123

Verifying VXLAN BGP EVPN and OTV Interoperation, and OTV with BDI 124

Display VXLAN Configuration on the Border Leaf Switch BL1 124

Display OTV Configuration on the Border Leaf Switch BL1 125

Display OTV Overlay State 126

Display OTV Adjacencies 127

Display Tier IDs 127

Troubleshooting VXLAN BGP EVPN and OTV Interoperation, and OTV with BDI 128

Feature History for VXLAN BGP EVPN and OTV Interoperation 128

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

vii

Contents

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

viii

Contents

CHAPTER 1

Preface

This preface describes the audience, organization, and conventions of the Book Title. It also provides

information on how to obtain related documentation.

This chapter includes the following topics:

•Audience, page 1

•Document Conventions, page 1

•Related Documentation, page 3

•Documentation Feedback, page 3

•Obtaining Documentation and Submitting a Service Request, page 3

Audience

This publication is for experienced network administrators who configure and maintain Cisco NX-OS on

Cisco Nexus 7000 Series Platform switches.

Document Conventions

Note •As part of our constant endeavor to remodel our documents to meet our customers' requirements,

we have modified the manner in which we document configuration tasks. As a result of this, you

may find a deviation in the style used to describe these tasks, with the newly included sections of

the document following the new format.

•The Guidelines and Limitations section contains general guidelines and limitations that are applicable

to all the features, and the feature-specific guidelines and limitations that are applicable only to the

corresponding feature.

Command descriptions use the following conventions:

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide

DescriptionConvention

Bold text indicates the commands and keywords that you enter literally

as shown.

bold

Italic text indicates arguments for which the user supplies the values.

Italic

Square brackets enclose an optional element (keyword or argument).[x]

Square brackets enclosing keywords or arguments separated by a vertical

bar indicate an optional choice.

[x | y]

Braces enclosing keywords or arguments separated by a vertical bar

indicate a required choice.

{x | y}

Nested set of square brackets or braces indicate optional or required

choices within optional or required elements. Braces and a vertical bar

within square brackets indicate a required choice within an optional

element.

[x {y | z}]

Indicates a variable for which you supply values, in context where italics

cannot be used.

variable

A nonquoted set of characters. Do not use quotation marks around the

string or the string will include the quotation marks.

string

Examples use the following conventions:

DescriptionConvention

Terminal sessions and information the switch displays are in screen font.screen font

Information you must enter is in boldface screen font.boldface screen font

Arguments for which you supply values are in italic screen font.

italic screen font

Nonprinting characters, such as passwords, are in angle brackets.< >

Default responses to system prompts are in square brackets.[ ]

An exclamation point (!) or a pound sign (#) at the beginning of a line

of code indicates a comment line.

!, #

This document uses the following conventions:

Means reader take note. Notes contain helpful suggestions or references to material not covered in the

manual.

Note

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