3Com MSR 50 This table, FRED, COFA, and SEF are alarm errors AERRs, Possible error types, 673

673

Description Use the display controller cpos command to display information about CPOS interfaces, such as state of E1/T1 channels, and alarms, and errors occurred to the regeneration section, multiplex section, and higher-order path.

The following table lists possible error types in the displayed information:

Table 121 Possible error types

Field	Description
FRED	Receive loss of basic frame alignment, or receive frames with red alarm
	errors.
COFA	Change of frame alignment.
SEF	Severely error frame. Four consecutive frame synchronization errors
	generate one SEF.
FERR	Framing Bit Error. It refers to the frame with the Ft/FPS/FAS error.
CERR	CRC error
FEBE	Far end block error. This occurs when the CRC4 framing format applies on
	the E1 channel.
BERR	PRBS bit error (Pseudo-random binary sequence bit error, for test only).
BIP	Bit-interleaved parity.
REI	Remote error indication.

In this table, FRED, COFA, and SEF are alarm errors (AERRs).

Related command: display controller cpos e1, display controller cpos t1.

Example # Display the path information of interface CPOS 4/0.

<Sysname> display controller cpos 4/0 Cpos4/0 current state : UP Description : Cpos4/0 Interface

Frame-format SDH, multiplex AU-3, clock master, loopback not set

Tx: J0: 0x01, J1: "NetEngine", C2: 0x02

Rx: J0: 0x01, J1: "NetEngine", C2: 0x02

Regenerator section:

Alarm: none

Error: 0 BIP, 0 SEF

Multiplex section:

Alarm: none

Error: 0 BIP, 0 REI

Higher order path(VC-3-1):

Alarm: none

Error: 0 BIP, 0 REI

Higher order path(VC-3-2):

Alarm: none

Error: 0 BIP, 0 REI

Higher order path(VC-3-3):

Alarm: none

Error: 0 BIP, 0 REI

Cpos4/0 CT1 1 is up

Frame-format ESF, clock master, loopback not set

Cpos4/0 CT1 2 is up

Frame-format ESF, clock master, loopback not set