Axis Communications 207W QoS (Quality of service), SMTP (email)

QoS (Quality of service)

Quality of Service (QoS) provides the means to guarantee a certain level of a specified

resource to selected traffic on a network. Quality can be defined as e.g. a maintained level

of bandwidth, low latency, no packet losses, etc. The main benefits of a QoS-aware

network can be summarized as:

• The ability to prioritize traffic and thus allow critical flows to be served before

flows with lesser priority.

• Greater reliability in the network, thanks to the control of the amount of band-

width an application may use, and thus control over bandwidth races between

applications.

The QoS in Axis network video products marks the data packets for various types of

network traffic originating from the product. This makes it possible for network routers

and switches to e.g. reserve a fixed amount of bandwidth for these types of traffic. The

following types of traffic are marked:

• live video

• live audio

• event/alarm traffic

• management network traffic.

For each type of network traffic supported by your Axis network video product, enter a

DSCP (Differentiated Services Codepoint) value. This value is used to mark the traffic’s IP

header. When the marked traffic reaches a network router or switch, the DSCP value in the

IP header tells the router or switch which type of treatment to apply to this type of traffic,

for example, how much bandwidth to reserve for it.

Note that DSCP values can be entered in decimal or hex form, but saved values are always

shown in decimal.

For more infomation on Quality of Service, please see the Axis support web at

www.axis.com/techsup

SMTP (email)

Enter the host names (or IP addresses) and port numbers for your primary and secondary

mail servers in the fields provided, to enable the sending of notifications and image/video

email messages from the camera to predefined addresses via SMTP.

If your mail server requires authentication, check the box for Use authentication to log in

to this server and enter the necessary information.