Fcs Calculated Bit Sequence; Table 7-4 Fcs Calculated Bit Sequence Supported By Each Type Of Boards - Huawei OptiX OSN 550 Configuration Manual

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Value
No
FCS32
Configuration Guidelines
If Mapping Protocol is set to HDLC or LAPS, the value of Check Field Length must be
consistent for the interconnected VCTRUNKs at the two ends.
Relationship with Other Parameters
If Mapping Protocol is set to HDLC or LAPS, select FCS32 only.

7.24 FCS Calculated Bit Sequence

Description
The FCS Calculated Bit Sequence parameter specifies the sequence of storing the bits in the
CRC field of the mapping protocol.
Impact on the System
If the value of FCS Calculated Bit Sequence for the VCTRUNK of the local equipment is
different from that of FCS Calculated Bit Sequence for the VCTRUNK of the interconnected
equipment, the service is interrupted.
Values
Table 7-4

Table 7-4 FCS calculated bit sequence supported by each type of boards

Board Name
EFS8
EGT1
Issue 02 (2011-06-30)
Description
The protocol frame does not contain the CRC field. Only the
GFP protocol supports this option.
The CRC field of the protocol frame contains 32 bits.
shows the value range of each type of board.
Mapping
Protocol
l GFP
l LAPS
l HDLC
l GFP
l LAPS
l HDLC
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Value Range Default Value
Big endian l Mapping Protocol:
GFP
Little endian
l FCS Calculated Bit
Sequence: Big endian
l Mapping Protocol:
Big endian
GFP
l FCS Calculated Bit
Sequence: Big endian
7 List of Parameters
7-25