I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the security area directors.
Document editors and WG chairs should treat these comments just like any other last-call comments.

Summary:
This document defines the encoding for BGP Wide Communities, which can be used to specify, carry as well as use for execution of an operator's defined set of parameters. It provides an extensible platform for any new community encoding needs in the future. 

The description is very clear and has a very clear description of the Security Consideration. 

Thanks, Linda Dunbar