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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 insufficient, especially for real-time streaming multimedia applications. Quality can be defined as, for instance, a maintained level of bit rate, low latency, no packet dropping, etc.

The following are the main benefits of a QoS-aware network:

■The ability to prioritize traffic and guarantee a certain level of performance to the data flow.

■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 defines 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 different 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 first.

NOTE:

► 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 offer a "best-effort." Users can think of CoS as "coarsely-grained" traffic control and QoS as "finely-grained" traffic control.

►Although CoS is simple to manage, it lacks scalability and does not offer end-to-end guarantees since it is based on L2 protocol.

78 - User's Manual

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Vivotek IP8355EH user manual Network QoS Quality of Service, Requirements for QoS
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IP8355EH specifications

The Vivotek IP8355EH is a sophisticated IP camera designed to meet the demands of various surveillance applications. With its blend of advanced technologies and robust features, this camera is ideal for monitoring both indoor and outdoor environments.

One of the standout features of the IP8355EH is its 2-Megapixel resolution, which ensures clear, high-definition video captures. This clarity is essential for detailed monitoring, whether for security purposes or general surveillance. The camera utilizes a 1/2.7" progressive scan CMOS sensor, allowing for improved performance in low-light conditions, delivering quality images even in challenging lighting.

Built for resilience, the Vivotek IP8355EH boasts an IP66 weatherproof rating, making it suitable for outdoor usage where exposure to harsh weather elements is a concern. Additionally, it comes equipped with an IK10-rated vandal-proof housing, providing an added layer of protection against tampering or physical damage.

The camera features wide dynamic range (WDR) technology, which enhances visibility in high-contrast scenes. This capability is crucial in environments where backlighting may present challenges, enabling clear images of both bright and dark areas within a single frame.

With the Smart Stream II technology, the camera efficiently optimizes bandwidth usage without compromising image quality. This feature adjusts the image quality according to the monitored area and the level of detail needed, resulting in significant savings on storage capacity.

The IP8355EH is equipped with a built-in Infrared (IR) LED, providing night vision capabilities up to 30 meters. This allows continuous monitoring even in complete darkness, ensuring round-the-clock surveillance for enhanced security.

Networking capabilities are robust, with support for both Ethernet and Wi-Fi, enabling flexible installation options. Moreover, it supports Power over Ethernet (PoE), simplifying the deployment process by allowing power and data to be transmitted over a single cable.

Additionally, the camera is compliant with the ONVIF standard, ensuring compatibility with various video management systems. This interoperability is key for users seeking to integrate the IP8355EH into existing surveillance setups.

Overall, Vivotek's IP8355EH is a feature-rich, reliable outdoor IP camera that stands out in the competitive landscape of surveillance technology. Its combination of high-resolution imaging, durable design, low-light performance, and user-friendly features makes it an excellent choice for ensuring the safety and security of any environment.
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