EXFO FTB-1, User Manual

Page: 488 / 675

Test Functions
476
FTB-700G/800 Series
Packet Capture
Frame Length
Specifies the length of the frame that will be saved in the capture buffer.

Complete
captures the entire frames.

Truncated captures only the first specified number of bytes per frame.
Use either the Bytes field to manually enter the number of bytes per
frame or tap on the
Truncation Calculator button for automatic bytes
per frame calculation.
Bytes allows the selection of the number of bytes that will be saved in
the capture buffer for each frame captured. Choices are from 14
(default) to 1536 bytes.
Truncation Calculator
allows to easily determine at what byte to
truncate the frame captured by selecting the desired frame header
components.

Header Layer specifies the header layer level: Layer 2 (Ethernet) ,
Layer 3 (IP)
, or
Layer 4 (TCP/UDP)
.

IP Version specifies the IP version: IPv4 or IPv6 .

Encapsulation
parameters are optional and not selected by
default.
VLAN
check box, when selected, enables VLAN and allows to
select the number of VLANs: 1, 2, or 3.
MPLS
check box, when selected, enables MPLS and allows to
select the number of labels: 1 or 2.

Additional Payload (bytes)
allows to optionally select the number
of additional payload bytes (1 to 1400 bytes).

Total Number of Bytes
indicates the number of bytes for the
selected frame parameters. This value will be used as the
truncated frame length (
Truncated
field).