CHAPTER 2
Traffic Policing Standards
•
Supported Standards for Policing on page 13
Supported Standards for Policing
Three-color policers are part of an assured forwarding (AF) per-hop-behavior (PHB)
classification system for a Differentiated Services (DiffServ) environment, which is
described and defined in the following RFCs:
•
RFC 2474,
Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6
Headers
•
RFC 2475,
An Architecture for Differentiated Service
•
RFC 2597,
Assured Forwarding PHB Group
•
RFC 2598,
An Expedited Forwarding PHB
•
RFC 2698,
A Two Rate Three Color Marker
In a DiffServ environment, the most significant 6 bits of the type-of-service (ToS) octet
in the IP header contain a value called the
Differentiated Services code point
(DSCP).
Within the DSCP field, the most significant 3 bits are interpreted as the
IP precedence
field, which can be used to select different per-hop forwarding treatments for the packet.
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Copyright © 2016, Juniper Networks, Inc.
Содержание EX9200 Series
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