Cisco Nexus 9000 Series User manual

Cisco Nexus 9000 Series NX-OS Intelligent Traffic Director
Configuration Guide, Release 9.x
First Published: 2015-07-02
Last Modified: 2018-11-05
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CONTENTS
Preface vii
PREFACE
Audience vii
Document Conventions vii
Related Documentation for Cisco Nexus 9000 Series Switches viii
Documentation Feedback viii
Obtaining Documentation and Submitting a Service Request viii
New and Changed Information 1
CHAPTER 1
New and Changed Information 1
Configuring ITD 3
CHAPTER 2
About ITD 3
Deployment Modes 5
One-Arm Deployment Mode 5
One-Arm Deployment Mode with vPC 5
Sandwich Deployment Mode 6
Server Load-Balancing Deployment Mode 7
Device Groups 8
Multiple Device Groups in an ITD Service 8
VRF Support 9
Router ACLs 9
Include and Exclude ACLs 10
Virtual IP Address Filtering 10
Port Number-Based Filtering 10
Hot-Standby 10
Multiple Ingress Interfaces 11
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System Health Monitoring 11
Health of an Interface Connected to a Node 11
Peer Synchronization 11
Failaction Reassignment 12
No Failaction Reassignment 12
No Failaction Reassignment with a Probe Configured 12
No Failaction Reassignment without a Probe Configured 12
Licensing Requirements for ITD 12
Guidelines and Limitations for ITD 13
ITD Support Summary 14
Default Settings for ITD 15
Configuring ITD 16
Enabling ITD 16
Configuring a Device Group 16
Configuring an ITD Service 18
Assigning an ACL to an ITD Service 21
Nondisruptively Adding or Deleting Nodes 23
Nondisruptively Adding or Deleting ACEs in Include or Exclude ACLs 25
Verifying the ITD Configuration 25
Configuration Examples for ITD 28
Configuration Example: One-Arm Deployment Mode 43
Configuration Example: One-Arm Deployment Mode with vPC 44
Configuration Example: Sandwich Deployment Mode 46
Configuration Example: Server Load-Balancing Deployment Mode 47
Configuration Example: ITD as WCCP Replacement (Web-Proxy Deployment Mode) 48
Configuration Example: Peer Synchronization for Sandwich Mode 50
Configuration Example: Firewall on a Stick 52
ITD Services 52
ASA VLANs 52
Flow Symmetry 53
Link Failures 54
Configuration Example 55
Configuration Example: Firewall in Dual-Switch Sandwich Mode with vPCs 59
Configuration Example: Firewall in Layer 3 Clustering 61
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Contents

Related Documents 65
Cisco Nexus 9000 Series NX-OS Intelligent Traffic Director Configuration Guide, Release 9.x
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Contents

Cisco Nexus 9000 Series NX-OS Intelligent Traffic Director Configuration Guide, Release 9.x
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Contents

Preface
This preface includes the following sections:
•Audience, on page vii
•Document Conventions, on page vii
•Related Documentation for Cisco Nexus 9000 Series Switches, on page viii
•Documentation Feedback, on page viii
•Obtaining Documentation and Submitting a Service Request, on page viii
Audience
This publication is for network administrators who install, configure, and maintain Cisco Nexus switches.
Document Conventions
Command descriptions use the following conventions:
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}]
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DescriptionConvention
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.
!, #
Related Documentation for Cisco Nexus 9000 Series Switches
The entire Cisco Nexus 9000 Series switch documentation set is available at the following URL:
http://www.cisco.com/en/US/products/ps13386/tsd_products_support_series_home.html
Documentation Feedback
To provide technical feedback on this document, or to report an error or omission, please send your comments
to [email protected]. We appreciate your feedback.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service
request, and gathering additional information, see What's New in Cisco Product Documentation at:
http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.
Subscribe to What's New in Cisco Product Documentation, which lists all new and revised Cisco technical
documentation as an RSS feed and delivers content directly to your desktop using a reader application. The
RSS feeds are a free service.
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Preface
Related Documentation for Cisco Nexus 9000 Series Switches

CHAPTER 1
New and Changed Information
This chapter provides release-specific information for each new and changed feature in the Cisco Nexus 9000
Series NX-OS Intelligent Traffic Director Configuration Guide, Release 9.x.
•New and Changed Information, on page 1
New and Changed Information
This table summarizes the new and changed features for the Cisco Nexus 9000 Series NX-OS Intelligent Traffic
Director Configuration Guide, Release 9.x and tells you where they are documented.
Where DocumentedChanged in
Release
DescriptionFeature
Configuring ITD, on page
3
9.2 (1)Added support for the Cisco Nexus C9364C,
C9336C-FX2,C93240YC-FX2 switches.
ITD
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New and Changed Information
New and Changed Information