Exfo ETS-1000G Instrukcja Użytkownika Pobierz pdf (Strona 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.

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Exfo ETS-1000G Instrukcja Użytkownika Strona 38