Traffic Generation
79
10. If necessary, repeat the payload configuration process for one or more traffic flows
(Flow #1 to Flow #8) available from the Payload menu.
Table 4.3: Ethernet Frame Settings
Setting Description
Payload Type • BERT: The payload content is set to a bit pattern suitable
for measuring the Bit Error Ratio (BER). The tester
includes support for two different kinds of BERT pattern:
Pseudo-Random Bit Sequences (PRBSs) or 32-bit user
configurable patterns. BERT generation and analysis over
framed interfaces is supported by flow 1 only.
•SLA: This is the payload to be used to measure latency,
packet loss and all the SLA metrics derived from them. If
the current operation mode is set to Ethernet endpoint, the
SLA payload constitutes a proprietary extension of the
Operation, Administration and Maintenance (OAM) proto-
col for Ethernet defined in ITU-T Y.1531. The SLA payload
in IP Endpoint mode is a proprietary ALBEDO Telecom for-
mat.
• All zeroes: Sets the transmitted pattern to all zeroes.
BERT Patterns Sets the transmitted and expected test pattern (port A) or the
expected test pattern (port B). Supported patterns are:
• PRBS 2
11
-1 /2
11
-1 inverted: This is a pseudo-random bit
pattern specified in ITU-T O.150 and O.153 for error per-
formance measurements below the primary rate (2048 kb/
s). The 2
11
-1 inverted is a 2
11
-1 bit wise inverted pattern.
• PRBS 2
15
-1 /2
15
-1 inverted: This is a pseudo-random bit
pattern specified in ITU-T O.150 and O.151 for measure-
ments at the primary rate or above. The 2
15
-1 inverted is a
2
15
-1 bit wise inverted pattern.
• PRBS 2
20
-1 /2
20
-1 inverted: This is a pseudo-random bit
pattern specified in ITU-T O.150 and O.151 for error per-
formance measurements at the primary bit rate or above.
The 2
20
-1 inverted is a 2
20
-1 bit wise inverted pattern.
• PRBS 2
23
-1 /2
23
-1 inverted: This is a pseudo-random bit
pattern specified in ITU-T O.150 and O.151 for error per-
formance measurements at the primary bit rate or above.
The 2
23
-1 inverted is a 2
23
-1 bit wise inverted pattern.
To Next Page
Loading...