Release Notes for Cisco 8500 Series Secure Routers, Release 17.15.x

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Updated:September 9, 2025

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Updated:September 9, 2025
 

                                   

Cisco 8500 Series Secure Routers, Release 17.15.x. 3

New hardware features. 3

New software features. 3

Resolved issues. 3

Open issues. 4

Related resources. 4

Legal information. 4

 

 

Cisco 8500 Series Secure Routers, Release 17.15.x

Cisco IOS XE 17.15.4a is the first release for Cisco 8500 Series Secure Routers in the Cisco IOS XE 17.15.x release series.

This document describes the features and issues for Cisco 8500 Series Secure Routers, Release 17.15.x.

The Cisco 8500 Series Secure Routers are compact 1RU platforms that are well-suited for Datacenter and Colocation deployments. The primary use-case for these routers is Enterprise WAN Aggregation.

The Cisco 8500 Series Secure Routers includes the following models:

●     C8570-G2

●     C8550-G2

For more information on the features and specifications of Cisco 8500 Series Secure Routers, see the Cisco 8500 Series Secure Routers Datasheet

New hardware features

This section provides a brief description of the new hardware features introduced in this release.

New hardware features in Cisco IOS XE 17.15.4a

Table 1.             New hardware features for Cisco 8500 Series Secure Routers, Release 17.15.4a

Feature

Description

Cisco 8500 Series Secure Routers

From Cisco IOS XE 17.15.4a, Cisco 8500 Series Secure Routers are available in these models.

C8570-G2

C8550-G2.

New software features

This section provides a brief description of the new software features introduced in this release.

New software features in Cisco IOS XE 17.15.4a

Table 2.             New software features for Cisco 8500 Series Secure Routers, Release 17.18.1a

Product impact

Feature          

Description

Licensing Process

 

Cisco 8500 Series Secure Routers licensing

Cisco 8500 Series Secure Routers supports platform-based licensing, a way of grouping licenses and devices based on platform-classes. A platform class is a hierarchical categorization based on the product family and place in the network. In this platform-based licensing model, Essentials and Advantage licenses are available. License portability is supported across devices within the same platform class and usage of the same license across different modes is also possible.

 

Resolved issues

The following section lists the resolved bugs in this specific software release.

Note: This software release may contain bug fixes first introduced in other releases. Additional information for all resolved bugs for this release is available in the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com

Resolved issues in Cisco IOS XE 17.15.4a

There are no customer impacting bugs that were fixed in this release.

Open issues

The following section lists the open bugs in this specific software release.

Note: This software release may contain bug fixes first introduced in other releases. Additional information for all resolved bugs for this release is available in the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com

Open issues in Cisco IOS XE 17.15.4a

There are no customer impacting bugs that were identified in this release.

Related resources

·       Hardware Installation Guide for Cisco 8500 Series Secure Routers

·       Software Installation Guide for Cisco 8500 Series Secure Routers

·       Cisco 8000 Series Secure Routers

Legal information

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

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