EXFO ETS-1000G - Manual (Page 38)

Preparing RFC 2544 for Analysis
28 ETS-1000G
Additional header parameters
Press (when VLAN is selected) to automatically substitute the settings
of test port which have been specified using the menu Interface
Parameters > VLAN for the VLAN settings.
Press (when MPLS is selected) to automatically substitute the settings
of test port which have been specified using the menu Interface
Parameters > MPLS for the MPLS settings.
VLAN Opening the VLAN menu which allows setting up to three
VLAN tags.
MPLS Opening the Label Stack menu.
IP DiffServ Allows selecting the Precedence and ToS fields
(PREC+TOS) or the DSCP field (DSCP) to set the Class of
Service for the traffic received from various applications.
The description of these fields is given below.
Precedence This field specifies a frame priority. Eight frame priority
values are supported. A sender can set any value from the
table (see Reference Tables on page 143) in this field.
ToS This field defines the Type of Service of an IP packet. A
sender can set any value listed in the table. Besides, it is
possible to set any other combination of 4 bits according to
the router's settings.
DSCP The DSCP field consists of 8 bits. It allows setting more
Classes of Service for traffic than the Precedence and ToS
fields do. The description of six highorder bits is given in
Reference Tables on page 143. Two low-order bits are used
by TCP for transmitting congestion information. They are
described in Reference Tables on page 143.
UDP src A sender's UDP port number.
UDP dst A destination UDP port number.