Command Manual – Port
Quidway S8500 Series Routing Switches Chapter 3 POS Port Configuration Commands
Huawei Technologies Proprietary
3-7
undo flag { j0 | j1 } { sdh | sonet }
View
POS port view/Ethernet GE port view
Parameter
c2: Signal label byte C2 belongs to high-order path overhead byte, and is used to
indicate the multiplexing structure and message payload of the VC (virtual container)
frame. By default, it is 0x16 (hexadecimal).
j0: Regenerator section trace byte J0 belongs to section overhead byte, and is used to
check port connectivity at section level. By default, it is default.
j1: Path trace byte J1 also belongs to high-order overhead byte, and is used to check
port connectivity at path level. The value range is 1 to 63 characters (string). The
default value is “default”.
sdh: Frame format is SDH. 10GEWAN port currently only needs SDH type.
sonet: Frame format is SONET.
flag-value: The value range of c2 is 0 to ff (hexadecimal).
In the SDH format, the value ranges of j0 and j1 are both 1 to 15 characters (string).
In the SONET format, the value range of j0 is 0 to 7f (hexadecimal).
Description
Use the flag command to set overhead byte type at the port.
Use the undo flag command to restore the default overhead byte type at the port.
Note that:
z The C2, J0 and J1 configurations should be consistent for the sender and receiver.
Otherwise, the system may give alarms. The frame format of overhead bytes J0
and J1 must be consistent at both POS ports. Otherwise, the system cannot read
the peer field values correctly.
z A GE port supports the flag command only when operating in WAN mode.
Example
# Configure overhead byte J0 of the POS port.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface pos2/1/1
[Quidway-Pos2/1/1] flag j0 sdh ff
# Configure overhead byte J0 of the 10GE WAN port.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
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