EXFO FTB-1, User Manual

Page: 230 / 675

Test Setup - Test Configurator, Timer, and System
218
FTB-700G/800 Series
RFC 6349

CIR
The Local-to-Remote CIR and Remote-to-Local CIR represent the
Committed Information Rate of the Ethernet Service under test:
1.0 Mbit/s
to Line Rate. The CIR is not used to actually transmit frames
at this rate but to calculate a Bandwidth Delay Product (BDP) which in
turn is used to set the Max Window Size of the TCP connections.
Rate Unit determines the unit used to display the rate values:
Mbit/s
(default) or
Gbit/s
.

TOS/DS (IPv4) allows to enter an hexadecimal value, 00 (default) to
FF
. Changing the
IP TOS/DS
value will affect the
TOS/DS Config
settings and vice versa.
MTU

Max MTU (bytes) determines the Maximum Transfer Unit (MTU) to
use when the client is generating TCP traffic toward the server: from
1080 to 1500 bytes (default).

Path MTU Discovery
check box when selected (default) allows to
perform a Packetization Layer Path MTU Discovery phase.
Window Sweep

Window Sweep check box when selected (default) allows to perform
the Window Sweep phase.

Duration (per step) is the duration of the Window Sweep phase per
direction and per Window tested: 30 seconds (default) to 5 minutes.