Technical Summary
Key to the extensibility of the Intermediate System to Intermediate
System (IS-IS) protocol has been the handling of unsupported and/or
invalid Type/Length/Value (TLV) tuples. Although there are explicit
statements in existing specifications, deployment experience has
shown that there are inconsistencies in the behavior when a TLV which
is disallowed in a particular Protocol Data Unit (PDU) is received.
This document discusses such cases and makes the correct behavior
explicit in order to ensure that interoperability is maximized.
Working Group Summary
The document was well received and the process straight forward.
Document Quality
Most implementations already follow what this document specifies. The
implementations that do not must be updated.
Personnel
Document Shepherd: Christian Hopps
Responsible AD: Alvaro Retana