
16
OmniBER OTN Communications Performance Analyzers
Error and alarm generation
Error generation
OTN Physical: Entire frame (1)
OTU2: Frame (OA1,OA2), MFAS, BIP-8, BEI,
correctable FEC errors, uncorrectable FEC blocks
ODU2: BIP-8, BEI
Payload: Bit
Error control: Single, error all (3), M.P x 10-n (where
M.P = 0.1 to 9.9 in 0.1 steps; n = 3 to 9)(4),
SONET Physical: Entire frame (1)
Transport O/H: Frame (A1A2), CV-S (B1), CV-L (B2),
REI-L (CV-LFE ) (2)
Path O/H: CV-P (B3), REI-P (CV-PFE)
Bulk payload: Bit.
Additional error add capability provided by:
Signal: BPV (STS-1).
VT path: CV-V (V5), CV-VFE (REI-V).
DSn/En payload: See DSn and PDH (En) error add for
details.
Error Control: Single, error all(3), M.P x 10-n (where
M.P = 0.1 to 9.9 in 0.1 steps; n = 3 to 9)(4), N-in-4(5),
N-in-T(6).
SDH Physical: Entire frame (1)
Section O/H: Frame (A1A2), B1 BIP, B2 BIP ,
MS-REI.(2)
Path O/H: B3 BIP, HP-REI
Tandem path (VC-3/4 and VC-4-Nc): IEC, TC-REI, OEI.
Bulk payload: Bit.
Additional error add capability provided by:
Signal: Code (STM-0e).
LO-path: B3 (VC-3), BIP-2 (VC-1/2); LP-REI.
Tandem path (VC-11/12): TC-REI, TC-OEI, N2-BIP.
PDH/DSn payload: See PDH and DSn error add for
details.
Error Control: Single, Error All (3), M.P x 10 -n (where
M.P = 0.1 to 9.9 in 0.1 steps; n = 3 to 9) (4), N-in-4 (5),
N-in-T (6)(7)
GFP - Framed Correctable core HEC, uncorrectable core HEC,
correctable type HEC, uncorrectable type HEC,
correctable extension HEC, uncorrectable extension
HEC, payload FCS.
GFP -
Transparent
Correctable core HEC, uncorrectable core HEC,
correctable type HEC, uncorrectable type HEC,
correctable extension HEC, uncorrectable extension
HEC, uncorrectable superblock errors, correctable
superblock errors (pre scrambler), superblock errors
(post scrambler), 10B_ERR errors, payload FCS.
LAPS Undersize Frames <=7bytes, undersize frames
<=5bytes, FCS, Invalid Control Sequence
Ethernet MAC Jumbo Frame, Runt Frame, FCS
DSn DS1: BPV(8), excess zeros(9), frame, CRC6, bit.
DS3: BPV (8), excess zeros(9), frame, MFAS, P-bit,
CP-bit, FEBE, bit.
Error Control: Single, M.P x 10 -n (where M.P = 0.1 to
9.9 in 0.1 steps, and n = 3 to 9)(4), N-in-4(10) , N-in-6(11)
PDH (En)) 2 Mb/s: Code(8), frame, CRC4, E-bit, bit.
8 Mb/s and 34 Mb/s: Code(8), frame, bit.
140 Mb/s: frame, bit.
Error Control: Single, M.P x 10 -n (where M.P = 0.1 to
9.9 in 0.1 steps, and n = 3 to 9)(4), N-in-4(10).
Notes:
1. Errors added after scrambling (and also after FEC calculation for OTN)
to simulate transmission errors.
2. For OC-192/STM-64, supports both the 'M1 only' and 'M0+M1' options
of the standards.
3. Not supported for data, frame, MFAS BPV/code, FEC block or bit.
4. The maximum error rate for any error type is 1 x 10-3 or the maximum
error rate supported by the error type (its saturation value), whichever is
the lower.
5. Supported for frame (A1A2) errors. N = 1 to 4.
6. SONET: B2 errors only. N errors transmitted during time T (T = 10 ms
to 1000 s in decade steps; N = 0 to 640 x n errors, where n is the
hierarchical level of the STS-n/OC-n signal).
7. SDH: B2 errors only. N errors transmitted during time T (T = 10 ms to
1000 s in decade steps;N = 0 to 640 errors for STM-0, and 0 to 1920 x n
errors for all other line rates, where n is the hierarchical level of the STM-n
signal).
8. Not available when signal is a mapped payload in SONET/SDH or a
channel within a higher rate DSn/PDH signal.
9. Single burst of 3 to 16 zeros (user selectable) transmitted without line
coding.
10. Supported for DS3 frame, DS3 MFAS and PDH frame errors. N = 1 to 4.
11. Supported for DS1 frame errors. N = 1 to 6.
Alarm generation
Alarm control On/Off/Single/Stress
On/Off: The alarm is turned on or off
Single: A single instance of the selected alarm is
generated as per ITU-T /Telcordia recommendations
Stress test: Performed using a 'p' , 'n' and ' m'
sequence. With alarm initial condition ON (OFF), the
alarm is toggled OFF (ON) for 'p' frames followed by a
continuous repeat of 'n' frames ON (OFF) then 'm'
frames OFF (ON). The values of p, n and m can be
changed hitlessly during testing.
Note: Single and stress test only available for SONET
and SDH alarm testing, excluding VT/TU alarms
OTN Physical: LOS
OTU2: LOF, OOF, OOM, AIS, IAE, BDI
ODU2: AIS, OCI, LCK, BDI
SONET Physical: LOS.
Transport O/H: LOF, SEF, AIS-L, RDI-L.
Path O/H: AIS-P, LOP-P, RDI-P, RDI-P-P, RDI-P-S,
RDI-P-C, UNEQ-P.
VT path: H4-LOM, AIS-V, LOP-V, RDI-V, RDI-V-P,
RDI-V-S, RDI-V-C, RFI-V, UNEQ-V.
SDH Physical: LOS.
Section O/H: LOF, OOF, MS-AIS, MS-RDI.
Path O/H: AU-AIS, AU-LOP, HP-RDI, HP-RDI-P,
HP-RDI-C, HP,RDI-S, HP-UNEQ.
Tandem path: (VC-3/4 and VC-4-Nc): TC-OOM,
VC-AIS, TC-IAIS, TC-RDI, ODI, TC-UNEQ.
LO-path: H4-LOM, TU-AIS, TU-LOP, LP-RDI, LP-RFI,
LP-UNEQ.
Tandem path (VC-11/12): TC-RDI, TC-ODI, VC-AIS,
TC-UNEQ.
Virtual
Concatenation
OOM1, OOM2, LOM, SQM - applied to selected
member of group
AIS-P, RDI-P, LOP-P, UNEQ-P, AIS-V, RDI-V, LOP-V,
UNEQ -V applied to all SONET members.
HP-AIS, HP-RDI, AU-LOP, HP-UNEQ, TU-AIS, LP-RDI,
TU-LOP, LP-UNEQ - applied to all SDH members.
GFP - Framed
and
Transparent
Loss of Client Signal (LOCS), Loss of Client Character
Synchronization (LOCCS) with configurable time
interval between 100 and 1000ms.
LAPS Erroneous frame - abort, - inverted FCS, link loss.
DSn DS1: LOS, LOF, AIS, RAI.
DS3: LOS, LOF, AIS, RAI, idle.
PDH (En) 2 Mb/s: LOS, LOF, LOMF, AIS, RDI, RDI (MF), minor
alarm.
8 /34/140 Mb/s: LOS, LOF, AIS, RDI, minor alarm.