54
QoS/DSCP (the DiffServ model)
DSCP-ECN defines QoS at Layer 3 (Network Layer). The Differentiated Services (DiffServ) model is
based on packet marking and router queuing disciplines. The marking is done by adding a field to the
IP header, called the DSCP (Differentiated Services Codepoint). This is a 6-bit field that provides 64
different class IDs. It gives an indication of how a given packet is to be forwarded, known as the Per Hop
Behavior (PHB). The PHB describes a particular service level in terms of bandwidth, queueing theory,
and dropping (discarding the packet) decisions. Routers at each network node classify packets according
to their DSCP value and give them a particular forwarding treatment; for example, how much bandwidth
to reserve for it.
Below are the setting options of DSCP (DiffServ Codepoint). Specify the DSCP value for each application
(0~63).
HTTP
Advanced Mode
To utilize HTTP authentication, make sure that your have set a password for the Network Camera first;
please refer to Security on page 38 for details.
Authentication: Depending on your network security requirements, the Network Camera provides two
types of security settings for an HTTP transaction: basic and digest.
If
basic
authentication is selected, the password is sent in plain text format and there can be potential
risks of being intercepted. If
digest
authentication is selected, user credentials are encrypted using MD5
algorithm and thus provide better protection against unauthorized accesses.
