Dscp Classification; Table 1: Dscp - Grandstream Networks GWN7000 User Manual

DSCP CLASSIFICATION

Differentiated Services (DiffServ) is a new model in which traffic is treated by intermediate systems with
relative priorities based on the type of services (ToS) field. Defined in
standard supersedes the original specification for defining packet priority described in
increases the number of definable priority levels by reallocating bits of an IP packet for priority marking.
The DiffServ architecture defines the DiffServ (DS) field, which supersedes the ToS field to make per-hop
behavior (PHB) decisions about packet classification and traffic conditioning functions, such as marking,
filtering, and policing.
Refer to below table for Layer3 and Layer2 classifications regarding the used applications/services.
Application/Service
Routing
Voice
Multimedia Conferencing
Multimedia Streaming
Mission-Critical Data
Call Signaling
Transactional Data
Network Management
Bulk Data
Scavenger
Best Effort (Default)

Table 1: DSCP

L3 Classification
Per-Hop-Behavior
(PHB)
CS6
EF
AF41
CS4
[AF31 CS3]
AF21
CS2
AF11
CS1
0
QoS in VoIP Environment Guide
RFC 2474 and RFC 2475, the DiffServ
RFC
L2 Classification
DSCP
48 6
46 5
34 4
32 4
25 3
[26 24] 3
18 2
16 2
10 1
8 1
0 0
791. DiffServ
CoS
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