Setting the loopback mode may affect the services carried on the port, so use this command with caution.
| ID | Name | Description |
|---|---|---|
| SRN | Subrack No. | Meaning: subrack number Value range: 0-11 Explanation: 1. This parameter specifies the number of a subrack. 2. This is a key parameter that identifies the port loopback setting of an optical-port board and specifies the subrack number of the optical-port board for port loopback. Default value: None |
| SN | Slot No. | Meaning: slot number Value range: 0-27 Explanation: 1. This parameter specifies the number of a slot. 2. This is a key parameter that identifies the port loopback setting of an optical-port board and specifies the slot number of the optical-port board for port loopback. Default value: None |
| SUBBRDN | Sub-board No. | Meaning: sub-board number Value range: 0 Explanation: This parameter specifies the sub-board number of the optical-port board for port loopback. Default value: 0 |
| PN | Port No. | Meaning: port number Value range: 0-83 Explanation: 1. This parameter specifies the number of a port. Description: This is a key parameter that identifies the port loopback operation on the optical-port board and specifies the optical-port number of the optical-port board for port loopback. Default value: None |
| MODE | Loopback mode | Meaning: port loopback mode Value range: NOLOOP(no loopback); HWLOOP(lowordpathline loopback); LINELOOP(triline loopback); SYSLOOP(trisystem loopback), SIN_CHN_LOC(singlechn local loopback); SIN_CHN_REM(tdm timeslot remote loopback) Explanation: This is a key parameter that identifies the port loopback setting of the optical-port board and specifies the port loopback mode of the optical-port board for port loopback. Default value: None |
| LCN | Loopback channel | Meaning: loopback channel number when the port loopback mode is TDM remote timeslot loopback Value range: time slots 1-31 Explanation: 1. This parameter specifies the port loopback channel number of the optical-port board for port loopback. 2. This parameter supports multiple options. Default value: None |
| LCN | Loopback channel | Meaning: loopback channel number when the port loopback mode is single channel local loopback Value range: time slots 1-31 Explanation: 1. This parameter specifies the port loopback channel number of the optical-port board for port loopback. 2. This parameter does not support multiple options. Default value: None |
| AUSTOP | Loopback time | Meaning: loopback period (minute) Value range: 1-65535 Description: This is a key parameter that identifies the port loopback of an optical-port board and specifies the duration of the port loopback of the optical-port board. Default value: 60 |
1. Set the loopback mode for an OIU port (Subrack No. = 0; Slot No. = 14; Sub-board No. = 0; Port No. = 0; Loopback mode = SYSLOOP(trisystem loopback); Loopback time = 30): SET OPTLOP: SRN=0, SN=14, SUBBRDN=0, PN=0, MODE=SYSLOOP, AUSTOP=30; 2. Set the loopback mode for an OIU port (Subrack No. = 0; Slot No. = 14; Port No. = 0; Sub-board No. = 0; Loopback mode = SIN_CHN_REM(tdm timeslot remote loopback); Loopback channel = TS2(Time Slot 2); Loopback time = 45): SET OPTLOP: SRN=0, SN=14, PN=0, MODE=SIN_CHN_REM, LCN=TS2-1, AUSTOP=45;