Cisco Nexus 7000 Series User manual

Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide
First Published: 2016-11-24
Last Modified: --
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©2016 Cisco Systems, Inc. All rights reserved.

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
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
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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
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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
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
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
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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
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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
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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:
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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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Preface
Document Conventions