User Manual
Table Of Contents
- Overview
- Ready to Use
- Accessing the Network Camera
- Using VIVOTEK Recording Software
- Using 3GPP-compatible Mobile Devices
- Using RTSP Players
- Main Page
- Client Settings
- Configuration
- System > General settings
- System > Homepage layout
- System > Logs
- System > Parameters
- System > Maintenance
- Media > Image
- Media > Video
- Media > Audio
- Network > General settings
- Network > Streaming protocols
- Network > SNMP (Simple Network Management Protocol)
- Network > FTP
- Bonjour
- Security > User accounts
- Security > HTTPS (Hypertext Transfer Protocol over SSL)
- Security > Access List
- PTZ > PTZ settings
- PTZ
- Mechanical PTZ Operation
- Event > Event settings
- Applications > Motion detection
- Applications > DI and DO
- Applications > Tampering detection
- Applications > Audio detection
- Applications > Shock detection
- Applications > Package management - a.k.a., VADP (VIVOTEK Application Development Platform)
- Recording > Recording settings
- Storage > Storage management
- Storage > Content management
- Appendix
VIVOTEK
96 - User's Manual
Network > QoS (Quality of Service)
Quality of Service refers to a resource reservation control mechanism, which guarantees a certain
quality to different services on the network. Quality of service guarantees are important if the
network capacity is insucient, especially for real-time streaming multimedia applications. Quality
can be dened as, for instance, a maintained level of bit rate, low latency, no packet dropping, etc.
The following are the main benets of a QoS-aware network:
■
The ability to prioritize trac and guarantee a certain level of performance to the data ow.
■
The ability to control the amount of bandwidth each application may use, and thus provide higher
reliability and stability on the network.
Requirements for QoS
To utilize QoS in a network environment, the following requirements must be met:
■
All network switches and routers in the network must include support for QoS.
■
The network video devices used in the network must be QoS-enabled.
QoS models
CoS (the VLAN 802.1p model)
IEEE802.1p denes a QoS model at OSI Layer 2 (Data Link Layer), which is called CoS, Class of
Service. It adds a 3-bit value to the VLAN MAC header, which indicates the frame priority level from
0 (lowest) to 7 (highest). The priority is set up on the network switches, which then use dierent
queuing disciplines to forward the packets.
Below is the setting column for CoS. Enter the
VLAN ID
of your switch (0~4095) and choose the
priority for each application (0~7).
If you assign Video the highest level, the switch will handle video packets rst.
► A VLAN Switch (802.1p) is required. Web browsing may fail if the CoS setting is incorrect.
►The Class of Service technologies do not guarantee a level of service in terms of bandwidth
and delivery time; they oer a "best-eort." Users can think of CoS as "coarsely-grained" trac
control and QoS as "nely-grained" trac control.
► Although CoS is simple to manage, it lacks scalability and does not oer end-to-end guarantees
since it is based on L2 protocol.
NOTE: