Release Notes for Cisco IWAN Release 2.1.1
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Release Notes for Cisco IWAN Release2.1.1
What’s New in Cisco IWAN Release 2.1.1
Multiple VPN routing and forwarding (VRF) Support
BGP Routing across the Overlay
Cisco Cloud Services Router (CSR) 1000V Series Support
Supported Cisco Platforms and Software Releases
Obtaining Documentation and Submitting a Service Request
Release Notes for Cisco IWAN Release 2.1.1
This release notes document provides information about Cisco Intelligent WAN (IWAN) Solution, Release 2.1.1.
Introduction
This release notes provide a summary of the components in the latest release of the Cisco Intelligent Wide Area Network (Cisco IWAN) Solution.
Cisco IWAN is a prescriptive solution for leveraging multiple transport providers, including low cost business grade broadband services as part of your WAN transport strategy. IWAN is a suite of components that brings all the WAN optimization, performance routing, and security levels of leased lines and expensive MPLS VPN services to the public Internet. IWAN makes it possible to get the performance, reliability and security benefits of private and virtual private network services while allowing the option of using more attractively priced service offerings and require simpler peering relationships with the transport provider. The same prescriptive design may be used with any transport provider; an important flexibility to have when multiple regional providers are needed.
Cisco IWAN can be implemented using Command Line Interface (CLI) commands on the routers of the hub and branch sites.
What’s New in Cisco IWAN Release 2.1.1
The new features and enhancements in Cisco IWAN Release 2.1.1, introduced via Cisco IOS XE Release 3.16.2S, Cisco IOS Release 15.5(3)S2 and Cisco IOS Release15.5(3)M2a, are as follows:
■
Multiple VPN routing and forwarding (VRF) Support
■BGP Routing across the Overlay
■Cisco Cloud Services Router (CSR) 1000V Series Support
Multiple VPN routing and forwarding (VRF) Support
Cisco IWAN 2.1.1 supports 20 VRFs on a hub and 7 VRFs on branches.
BGP Routing across the Overlay
Cisco IWAN Release 2.1.1 supports Internal BGP (iBGP) in addition to EIGRP across the overlay.
Multiple WAN Paths
Cisco IWAN Release 2.1.1 supports five paths in the IWAN domain. The paths can be a combination or mixture of MPLS, Internet, 4G or LTE interfaces. The paths terminate in a branch, but a branch might have two to five paths and branches might not share the same paths. When branches do not share the same paths, spoke-to-spoke tunnels cannot be established and the ability of Performance Routing (PfR) to manage performance is limited.
Advanced Load Balancing
In Cisco WAN 2.1, load balancing was performed when the load balance command was configured for traffic that did not have a performance or path preference policy. In Cisco IWAN 2.1.1, the advanced keyword is added to the load balance command, allowing paths to be excluded from load balancing for different traffic types, thereby making the load balancing policy flexible.
Path of Last Resort
A single path can be designated as the path of last resort. In most cases, this is a 4G or LTE path or service depending on usage.
PfRv3 Remote Prefix Tracking
Starting with Cisco IOS XE Denali 16.3.5c and Cisco IOS XE Everest 16.6.1, the PFRv3 Site prefix feature enhances networks running Performance Routing Version3 (PfRv3) to learn local site prefixes from the Routing Information Base (RIB) table as well as track the remote site prefix using RIB.
For more information, see the following Cisco document:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/pfrv3/configuration/xe-16-6/pfrv3-xe-16-6-book/pfrv3-remote-prefix.html
Hierarchical Path Preference
The path preference policy has been enhanced to support more than two levels of path preference hierarchy.
SGT Based QoS
SGT Based QoS support is supported with Cisco IOS XE Release 3.16.2S and Cisco IOS Release15.5(3)S2. This feature matches a Security Group Tag (SGT) and sets Differentiated Services Code Point (DSCP) on a LAN ingress policy. The WAN egress policy is based on DSCP (as is in Cisco IWAN 2.1).
Cisco Cloud Services Router (CSR) 1000V Series Support
Cisco Cloud Services Router (CSR) 1000V Series on the CSX platform or Cisco Unified Computing System (UCS) platform with multiple Ethernet interfaces, supports the following in Cisco IWAN Release 2.1.1:
■As a single branch router—Master Controller and border router (MC/BR)
■As a border router at the branch
■As a Master Controller (MC) in a hub site with scale enhancement from 500 sites to 2000 sites
Serviceability Enhancements
The following serviceability features are available in Cisco IWAN 2.1.1:
TC State Change Reason
The output of the show traffic class command has been enhanced to display uncontrolled to uncontrolled transitions due to lack of channel availability, for example, bandwidth not available, and bandwidth ceiling limit.
Show command Enhancements
1. The output of the show channel commands have been enhanced to display the label.
2. The output of the show traffic class summary command has been enhanced to display hexadecimal and text form of DSCP.
Cisco IWAN App Release 1.1
New features and functions are available in Cisco IWAN App Release 1.1.0 are as follows:
■Day-N addition and deletion of POP for datacenters
■Day 0 multilink support (more than two links) for hub sites
–Autopopulating WAN interface information
–Autopopulating OSPF LAN information
■Enable spoke provisioning with multiple interface
■Support for static IP address support in spokes for internet links
■Enhanced user experience through enhanced dashboard that displays provisioning and monitoring status, application experience and configuration differences
Note: Cisco Prime Infrastructure Release 3.1 is required for this feature and will be available from April 2016.
■Support for coexistence of non-IWAN sites with IWAN sites
■Update download link for Cisco IWAN App to point to APIC-EM release 1.1
System Requirements
The following sections describe the system requirements for Cisco IWAN 2.1.1, which are as follows:
■Supported Cisco Platforms and Software Releases
Supported Cisco Platforms and Software Releases
Cisco IWAN 2.1.1 supports the following Cisco devices and software releases.
Software Requirements
Cisco Wide Area Application Services
Cisco Wide Area Application Services (WAAS) release 5.5.5a or higher.
Cisco Prime Infrastructure release 3.1.
Limitations and Restrictions
This section lists limitations and restrictions in Cisco IWAN 2.1.1:
■Cisco Cloud Services Router (CSR) 1000V Series is not supported as hub border router.
■It is recommended that the unreachable timer be configured to four seconds.
■The following configuration is recommended for the hold-queue command on the loopback interface of the branch router (MC/BR):
Note: The hold-queue adjustment is not required on ISR-G2 but required on all Cisco IOS XE devices—ASR1k, ISR4k, Cisco Cloud Services Router (CSR) 1000V Series
■A single tunnel interface is supported for each border router at the IWAN POP.
Caveats
Cisco Bug Search Tool
For more information about how to use the Cisco Bug Search Tool, including how to set email alerts for bugs and to save bugs and searches, you can also see the Help & FAQ within the Bug Search Tool.
About the Bug Search Tool
This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products. Within the Cisco Bug Search Tool, each bug is given a unique identifier (ID) with a pattern of CSCxxNNNNN, where x is any letter (a-z) and N is any number (0-9). The bug IDs are frequently referenced in Cisco documentation, such as Security Advisories, Field Notices and other Cisco support documents. Technical Assistance Center (TAC) engineers or other Cisco staff can also provide you with the ID for a specific bug. The Cisco Bug Search Tool enables you to filter the bugs so that you only see those in which you are interested.
In addition to being able to search for a specific bug ID, or for all bugs in a product and release, you can filter the open and/or resolved bugs by one or more of the following criteria:
■Status, such as fixed (resolved) or open
You can save searches that you perform frequently. You can also bookmark the URL for a search and email the URL for those search results
Before You Begin
You must have a Cisco.com account to log in and access the Cisco Bug Search Tool. If you do not have one, you can register for an account.
Using the Bug Search Tool
1. In your browser, navigate to the Cisco Bug Search Tool.
2. If you are redirected to a Log In page, enter your registered Cisco.com username and password and then, click Log In.
3. To search for a specific bug, enter the bug ID in the Search For field and press Enter.
4. To search for bugs related to a specific software release, do the following:
In the Product field, choose Series/Model from the drop-down list and then enter the product name in the text field. If you begin to type the product name, the Cisco Bug Search Tool provides you with a drop-down list of the top ten matches. If you do not see this product listed, continue typing to narrow the search results.
In the Releases field, enter the release for which you want to see bugs.
The Cisco Bug Search Tool displays a preview of the results of your search below your search criteria.
5. To see more content about a specific bug, you can do the following:
–Mouse over a bug in the preview to display a pop-up with more information about that bug.
–Click on the hyperlinked bug headline to open a page with the detailed bug information.
Caveats in Cisco IWAN 2.1.1
This section provides information about the caveats in Cisco IWAN 2.1.1.
Software Download Information
The following table provides the path on Download Software page for downloading the software for Cisco IWAN Release 2.1.1.
Products > IOS and NX-OS Software > IOS XE > IOS XE S > IOS XE 3S > Routers > platform > Software on Chassis > IOS XE Software-3.16.5aS ( https://software.cisco.com/download/special/release.html?config=684110644675436ad1349ee490ed79ff) |
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Downloads Home > Products > IOS and NX-OS Software > IOS > IOS Software Release 15M&T > IOS 15.5M&T > platform > IOS Software-15.5(3)M5a ( https://software.cisco.com/download/special/release.html?config=1ad84c394cb5e333c4a79d0b4a7448ef) |
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Downloads Home > Products > Cloud and Systems Management > Routing and Switching Management > Network Management Solutions > Prime Infrastructure > Prime Infrastructure 3.1 > Prime Infrastructure Software-3.1.0 |
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Cisco Application Policy Infrastructure Controller Enterprise Module (APIC-EM) 1.0 Software |
Products > Cloud and Systems Management > Policy and Automation Controllers > Application Policy Infrastructure Controller Enterprise Module (APIC-EM) > APIC-EM Software-1.1 |
Products > Application Networking Services > Wide Area Application Services > Wide Area Application Services (WAAS) Software > Wide Area Application Services (WAAS) Software-5.5.5a |
Related Documentation
Cisco Application Policy Infrastructure Controller Enterprise Module Deployment Guide |
Information about the underlying Cisco APIC-EM product including deployment steps, verification, and troubleshooting. |
Cisco IWAN designs are explained in the Cisco IWAN technology design guides. Look for the guides in the Cisco Validated Designs (CVDs) at |
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Refer to this guide for information about Cisco Prime Infrastructure, which can be used to configure Cisco IWAN. |
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Description of the features and caveats for Cisco Prime Infrastructure. |
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Release Notes for Cisco Intelligent Wide Area Network Application (Cisco IWAN App) |
Description of the features, system requirments, prerequisites, and caveats for the Cisco Intelligent Wide Area Network Application (Cisco IWAN App) on APIC-EM. |
Description of the features and caveats for Cisco Network Plug and Play. |
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Release Notes for the Cisco Application Policy Infrastructure Controller Enterprise Module |
Description of the features and caveats for the Cisco Application Policy Infrastructure Controller Enterprise Module (Cisco APIC-EM). |
Overview of the Plug and Play solution, component descriptions, summary of major use cases, and basic deployment requirements, guidelines, limitations, prerequisites, and troubleshooting tips. |
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Information about the installation, deployment, configuration of Cisco IWAN on APIC-EM. Explains the Cisco IWAN GUI and how to manage connected devices and hosts within your network. |
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.
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