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.

This document describes optional extensions to the
TRILL base protocol to support labeling of traffic
with many more IDs than was previously supported.

The Security Considerations section for this document
seems to be perfectly adequate and I don't have any
other security or non-security concerns related to
the document.

Thanks,

Steve