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Conclusion
This simple extension defines a backwards compatible way to extend the current IS-IS TLV code and length field from one octet into two octets
TLV code (255) needs to be assigned by IANA
Authors would like to request the adoption as an IS-IS WG document ?
http://www.ietf.org/internet-drafts/drafts-shen-isis-extended-tlv-00.txt
PPT Version