A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Path Computation Element of the IETF.
Title : Extensions to the Path Computation Element
Communication Protocol (PCEP) to compute service aware Label Switched Path
Authors : Dhruv Dhody
Filename : draft-ietf-pce-pcep-service-aware-13.txt
Pages : 30
Date : 2016-09-22
In certain networks, such as, but not limited to, financial
information networks (e.g. stock market data providers), network
performance criteria (e.g. latency) are becoming as critical to data
path selection as other metrics and constraints. These metrics are
associated with the Service Level Agreement (SLA) between customers
and service providers. The link bandwidth utilization (the total
bandwidth of a link in actual use for the forwarding) is another
important factor to consider during path computation.
IGP Traffic Engineering (TE) Metric extensions describe mechanisms
with which network performance information is distributed via OSPF
and IS-IS respectively. The Path Computation Element Communication
Protocol (PCEP) provides mechanisms for Path Computation Elements
(PCEs) to perform path computations in response to Path Computation
Clients (PCCs) requests. This document describes the extension to
PCEP to carry latency, delay variation, packet loss and link
bandwidth utilization as constraints for end to end path computation.
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