Qos - Planet Networking & Communication ICA-M4320P User Manual

VLAN ID
Live Video
Live Audio
Event/Alarm
Management

3.5.12 QoS

This section describes how to set up the Differentiated Services Code Point (DSCP) values in
Quality of Service (QoS) configurations. 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 RFC2474 and RFC2475, the DiffServ standard supersedes the
original specification for defining packet priority described in RFC791.
The DiffServ architecture defines the DiffServ (DS) field, which supersedes the ToS field in
IPv4 to make per-hop behavior (PHB) decisions about packet classification and traffic
conditioning functions, such as metering, marking, shaping, and policing.
The six most significant bits of the DiffServ field is called as the DSCP. Routers at the edge of
the network classify packets and mark them with either the IP Precedence or DSCP value in a
Diffserv network. Other network devices in the core that support Diffserv use the DSCP value
in the IP header to select a PHB behavior for the packet and provide the appropriate QoS
treatment.
DiffServ Field
DS5 DS4 DS3 DS2
•
DSCP—six bits (DS5-DS0)
•
ECN—two bits
H.265 3 Mega-pixel IR IP Camera with Remote Focus and Zoom
Enter the ID of the VLAN to which CoS packets are directed.
Value from 0 (lowest priority) through 7 (highest priority) that
specifies the CoS priority value for steaming video data.
Value from 0 (lowest priority) through 7 (highest priority) that
specifies the CoS priority value for steaming audio data.
Value from 0 (lowest priority) through 7 (highest priority) that
specifies the CoS priority value for event/alarm data.
Value from 0 (lowest priority) through 7 (highest priority) that
specifies the CoS priority value for management data.
DS1 DS0 ECN
56
ECN
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