Optional Checksums in Intermediate System to Intermediate System
RFC 3358, “Optional Checksums in Intermediate System to Intermediate System”, is an Informational document published in August 2002 by T. Przygienda. The canonical text is published by the RFC Editor.
Abstract
This draft describes an optional extension to IS-IS protocol, used today by several ISPs for routing within their clouds. IS-IS is an interior gateway routing protocol developed originally by OSI and used with IP extensions as IGP. IS-IS originally does not provide CSNP and PSNP checksums, relying on the underlying layers to verify the integrity of information provided. Experience with the protocol shows that this precondition does not always hold and scenarios can be imagined that impact protocol functionality. This document introduces a new optional TLV providing checksums.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 3358 is hosted at rfc-editor.org. Available in TXT,HTML.
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