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RFC 8677
Title: Name-Based Service Function Forwarder (nSFF)
Component within a Service Function Chaining (SFC)
Framework
Author: D. Trossen,
D. Purkayastha,
A. Rahman
Status: Informational
Stream: Independent
Date: November 2019
Mailbox: [email protected],
[email protected],
[email protected]
Pages: 24
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-trossen-sfc-name-based-sff-07.txt
URL: https://www.rfc-editor.org/info/rfc8677
DOI: 10.17487/RFC8677
Adoption of cloud and fog technology allows operators to deploy a
single "Service Function" (SF) to multiple "execution locations".
The decision to steer traffic to a specific location may change
frequently based on load, proximity, etc. Under the current Service
Function Chaining (SFC) framework, steering traffic dynamically to
the different execution endpoints requires a specific "rechaining",
i.e., a change in the service function path reflecting the different
IP endpoints to be used for the new execution points. This procedure
may be complex and take time. In order to simplify rechaining and
reduce the time to complete the procedure, we discuss separating the
logical Service Function Path (SFP) from the specific execution
endpoints. This can be done by identifying the SFs using a name
rather than a routable IP endpoint (or Layer 2 address). This
document describes the necessary extensions, additional functions,
and protocol details in the Service Function Forwarder (SFF) to
handle name-based relationships.
This document presents InterDigital's approach to name-based SFC. It
does not represent IETF consensus and is presented here so that the
SFC community may benefit from considering this mechanism and the
possibility of its use in the edge data centers.
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