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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
About This Guide
This section describes the objectives, audience, organization, and conventions of this software
configuration guide. It contains the following sections:
• Document Revision History, page xxxvii
• Objectives, page xlvii
• Audience, page xlvii
• Organization, page xlvii
• Conventions, page l
• Related Documentation, page li
• Obtaining Documentation, Obtaining Support, and Security Guidelines, page li
Document Revision History
The Document Revision History table records technical changes to this document.
Document
Number Date Change Summary
OL-23826-01 November 2011 Initial version of the document.
OL-23826-02 January 2012 Following are the updates specific to this release:
• Cisco ASR 901 supports port based licensing. This type of
license is applicable to gigabit ethernet ports only. Ports 4 to
7 are enabled by default. For Copper and SFP ports, you need
to purchase separate licenses to enable them. For more
details see, Chapter 2, “Licensing”.
• SL-A901-B license supports VRF-Lite. For more details see,
Chapter 2, “Licensing”.
• The minimum time interval supported for BFD is 50 ms. For
more details, see Chapter 19, “Configuring Bidirectional
Forwarding Detection”.
• Cisco ASR 901 supports MLPPP configuration. For more
details, see Chapter 25, “Configuring MLPPP”.