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User Guide
78
Note: The default value for the SLA Ethertype in Ethernet endpoint mode is
0x8902 (IEEE 802.1ag / ITU-T Y.1731 OAM). There is no way to set a custom Eth-
ertype in IP endpoint mode, which is statically set to 0x0800 (IPv4 protocol).
6. Select one of the traffic flows between Flow 1 and Flow 8 to enter in the flow spe-
cific configuration.
All settings related with payload configuration in the current flow are displayed.
7. Choose one of BERT, SLA or All zeroes in Payload type.
Note: BER is available only for flow 1.
8. If you have configured Payload type to BER, choose the bit pattern you are going
to use for generation and analysis with the help of the BERT patterns control.
9. If you have configured BERT patterns to User, enter a 32-bit test pattern in User
payload in hexadecimal format.
Figure 4.5: Albedo payload for SLA tests (Ethernet Endpoint mode).
bits
13 5 7
Flags (0)
24 6 8
1
1
1
bytes
ITU-T Y.1731 OAM envelope
MEL (7) Version (0)
OpCode (VSM, 51)
1
End TLV (0)
1
TLV offset (16)
Layer 2
bits
13 5 7
2
468
ATSL-OUI
Sequence number
3
1
4
bytes
ALBEDO Telecom
Test Pattern (PRBS 2
31
-1)
Pattern Type (2)
1
SubOpCode (3)
8
IEC 61588
Timestamp
Length
2
Type (32)
1
Ethernet SLA Frame
(Type 0x8902)
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