Axis 211W Guida Utente

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 a maintained level of bandwidth, low latency, and no packet losses. 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 bandwidth 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 types of traffic marked by the camera are video, audio, event/alarm and 

management network traffic.

QoS DSCP Settings
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 hexadecimal format, but saved values are always shown in 

decimal. For more information on Quality of Service, please see the Axis support web at www.axis.com/techsup

Enter the host names or addresses for your primary and secondary mail servers in the fields provided, to enable 

the sending of notifications and image 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.

The Simple Network Management Protocol (SNMP) allows remote management of network devices. Depending 

on the level of security required, select the version of SNMP to use. The three levels of security are:

• SNMP V1 - includes no security.
• SNMP V2c - uses very simple security. The community name can be specified as a password for read or 

read/write access to all supported SNMP objects. The community is the group of network devices using 

SNMP.

• SNMP V3 - provides encryption and secure passwords. HTTPS must be enabled.

Traps are used by the camera to send messages to a management system for important events or status changes. 

These settings are used with SNMP v1/v2.

You can activate trap reporting, enter the IP address of the management server, and choose the trap community 

to use when sending a trap message to the management system.

See the online help

.

The camera includes support for UPnP

™

, which is enabled by default. If also enabled on your computer, the 

camera will automatically be detected and a new icon will be added to “My Network Places.” 

Check your operating system’s documentation for enabling UPnP™