The frequency range in the 1.2TL card is 186.1 THz to 190.85 THz with a default of 188.5 THz. Only 100MHz
grid spacing is supported. Only non-ITU channels are supported.
The frequency range in the OTN-XP card is 191.25 THz to 196.1 THz with a default of 193.1 THz. 50GHz
and 100MHz grid spacing is supported.
From R7.3.1 onwards, you can configure frequency with 50GHz and 100MHz grid spacing on trunk ports of
the 2-QDD-C card. The frequency range in the 2-QDD-C card is 191.15 to 196.1 THz with a default of 193.1
THz.
To configure the wavelength, use the following commands:
configure
controller optics Rack/Slot/Instance/Port
dwdm-carrier {100MHz-grid frequency frequency} | {50GHz-grid [frequency frequency}
commit
Pseudo Random Binary Sequence
Table 4: Feature History
Feature DescriptionRelease InformationFeature Name
1.2T card supports PRBS on the
ODU4 controller. This feature
allows you to test whether the
traffic is error free during link bring
up without depending on the peer
port.
Cisco IOS XR Release 7.3.1PRBS (Pseudo Random Binary
Sequence) on ODU4
The Pseudo Random Binary Sequence (PRBS) feature allows you to perform data integrity checks between
the NCS1004 trunk links without enabling the actual client traffic.
You need to enable PRBS feature on both the transmitting and receiving NCS 1004 trunk ports. The transmitting
trunk port generates a bit pattern and sends it to the peer NCS 1004 device. The device detects if the sent bit
pattern is received.
From R7.3.1 onwards, you can configure PRBS on the NCS 1004 trunk port for the 2-QDD-C card.
You can configure NCS 1004 trunk port in any one of the following modes for PRBS on the 1.2T card:
• Source mode — The NCS 1004 at trunk port generates PRBS signal on the line continuously as per the
configured PRBS pattern.
• Sink mode — The NCS 1004 at trunk port gets locked to the ingress signal according to the configured
pattern, analyzes and reports the errors.
• Source-Sink mode — The NCS 1004 at trunk port acts as both the PRBS transmitter and receiver, that
is, it generates PRBS signal as per the configured pattern, and also gets locked to the ingress signal with
the same pattern, and reports the errors.
Configuring Controllers
45
Configuring Controllers
Pseudo Random Binary Sequence
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