These release notes support Cisco IOS XE Release 3S releases up to and including Cisco IOS XE Release 3.5.2S. These release notes are for the Cisco ASR 1000 Series Aggregation Services Routers, which support Cisco IOS XE 3S releases. The Cisco ASR 903 Aggregation Service Router is introduced in Cisco IOS XE 3.5.0S. These release notes are updated as needed to provide information about new features, caveats, potential software deferrals, and related documents.
Cisco IOS XE 3S releases inherit all Cisco IOS XE Release 2 features that were released before the introduction of the Cisco IOS XE 3.1.0S release with few exceptions. For information about inherited features that were introduced in Cisco IOS XE Release 2 releases, see Release Notes for Cisco ASR 1000 Series Aggregation Services Routers for Cisco IOS XE Release 2 at:
We recommend that you view the field notices for this release to check whether your software or hardware platforms are affected. If you have an account on cisco.com, you can find field notices at:
If you do not have a cisco.com login account, you can find field notices at: