Contents

CPOS interface commands· 1

alarm-detect 1

clock· 2

controller cpos· 2

default 3

description· 3

display controller cpos· 4

display controller cpos e1· 7

e1 channel-set 8

e1 clock· 9

e1 flag· 10

e1 frame-format 11

e1 loopback· 11

e1 shutdown· 12

e1 unframed· 13

flag· 13

frame-format 14

link-delay· 15

loopback· 16

multiplex mode· 16

reset counters controller cpos· 17

shutdown· 18

threshold· 18

 

 

CPOS interface commands

 

	IMPORTANT: Only devices with the RT-MIC-X-CLP2, RT-MIC-X-CLP4, or RT-MIC-X-ET16 interface modules installed support CPOS interfaces.

‌

alarm-detect

Use alarm-detect to configure the action to take when an RDI, SD, or SF alarm occurs on an interface.

Use undo alarm-detect to restore the default.

Syntax

alarm-detect { rdi | sd | sf } action link-down

undo alarm-detect { rdi | sd | sf }

Default

The device does not take any actions on the interface when an RDI, SD, or SF alarm occurs.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

rdi: Specifies remote defect indication (RDI) alarms.

sd: Specifies signal degrade (SD) alarms.

sf: Specifies signal fail (SF) alarms.

action: Specifies the action to take when the specified alarm is detected on the interface.

link-down: Places the interface in down state.

Usage guidelines

An RDI alarm occurs if the device receives multiplexer section remote defect indication (MS-RDI) signals from the remote end.

An SD or SF alarm occurs if the bit error rate of incoming packets crosses the SD or SF alarm threshold. To set the SD or SF alarm threshold, use the threshold command.

Examples

# Configure CPos 1/1/1 to go down when an SD alarm occurs.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] alarm-detect sd action link-down

Related commands

Threshold

clock

Use clock to set the clock mode for a CPOS interface.

Use undo clock to restore the default.

Syntax

clock { master | slave }

undo clock

Default

The clock mode of a CPOS interface is slave.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

master: Sets the clock mode to master.

slave: Sets the clock mode to slave.

Usage guidelines

When the clock mode of a CPOS interface is master, it uses the internal clock source.

When the clock mode of a CPOS interface is slave, it uses the line clock source.

When connected to a SONET/SDH device, the CPOS interface must use the slave clock mode. The SONET/SDH network clock is more precise.

When two CPOS interfaces are directly connected, you must configure the two ends with different clock modes.

Examples

# Set the clock mode to master for CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] clock master

controller cpos

Use controller cpos to enter CPOS interface view.

Syntax

controller cpos cpos-number

Views

System view

Predefined user roles

network-admin

Parameters

cpos-number: Specifies a CPOS interface by its number.

Examples

# Enter the interface view of CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1]

default

Use default to restore the default settings for a CPOS interface.

Syntax

default

Views

CPOS interface view

Predefined user roles

network-admin

Usage guidelines

	CAUTION: The default command might interrupt ongoing network services. Make sure you are fully aware of the impact of this command when you use it on a live network.

 

This command might fail to restore the default settings for some commands because of command dependencies or system restrictions. You can use the display this command in interface view to check for these commands and perform their undo forms or follow the command reference to restore their default settings. If your restoration attempt still fails, follow the error message to resolve the problem.

Examples

# Restore the default settings for CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] default

description

Use description to configure the description of an interface.

Use undo description to restore the default.

Syntax

description text

undo description

Default

The interface description uses the interface name Interface format, for example, Cpos1/1/1 Interface.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

text: Specifies the description, a case-sensitive string of 1 to 255 characters.

Examples

# Configure the description of CPos 1/1/1 as CPOS-interface.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] description CPOS-interface

display controller cpos

Use display controller cpos to display status information for CPOS interfaces.

Syntax

display controller [ cpos [ cpos-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

cpos [ cpos-number ]: Specifies a CPOS interface by its number. If you do not specify the cpos keyword, this command displays information about all CPOS interfaces and CE1 interfaces. If you specify the cpos keyword without specifying an interface, this command displays information about all CPOS interfaces.

Usage guidelines

This command also displays alarms and errors that occurred to the regenerator section, multiplex section, and higher-order path.

Usage guidelines

The following table lists the possible error types in the command output.

Table 1 Possible output 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 frames with the Ft/Fs/FPS/FAS error.
CERR	CRC error.
FEBE	Far end block error. This error occurs when the E1 channel uses the CRC4 framing format.
BERR	PRBS bit error (pseudo-random binary sequence bit error, for test purposes only).
BIP	Bit-interleaved parity.
REI	Remote error indication.

 

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

Examples

# Display CPos 1/1/1 status information.

<Sysname> display controller cpos 1/1/1

Cpos 1/1/1

Current state: DOWN

Description : Cpos 1/1/1 Interface

Last clearing of counters: Never

Current system time:2020-08-08 13:43:40

Last time when physical state changed to up:-

Last time when physical state changed to down:2020-08-07 14:51:56

Frame-format SDH,multiplex AU-4,clock line,loopback none

SD threshold: 6 , SF threshold: 3 

Optical:Absent

Vendor PN:210231A562X20500083B

Vendor Name:H3C

Wavelength(nm):850,Transfer Distance(m):550

RX power: 2539 dBm/100, Alarm thresholds:[0, -1700]dBm/100

TX power: 2462 dBm/100, Alarm thresholds:[-300, -950]dBm/100

 

Regenerator section:

  Alarm:  LOS

  ERROR:  RS_BIP(B1) 0

  Tx: J0: "" 

  Rx: J0: "" 

Multiplex section:

  Alarm:  NONE

  ERROR:  MS_BIP(B2) 5135191, MS_REI 0

High order Path(AU-4-1):

  Alarm:  HP_TIM  AU_AIS  HP_RDI  HP_PLM

  ERROR:  HP_BIP(B3) 0, HP_REI 0, HP_PJE 0, HP_NJE 0

  TX: J1: "" 

  RX: J1: ""  

  TX: C2: 0x02 

  RX: C2: 0xff 

  TX: S1S0: 0x02 

  RX: S1S0: - 

              

CE1  1 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none 

CE1  2 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none 

CE1  3 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none

…

CE1 62 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none 

CE1 63 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none

Table 2 Command output

Field	Description
Current state	Physical link state of the interface: ·     Administratively DOWN—The interface has been shut down by using the shutdown command. ·     DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). ·     UP—The interface is both administratively and physically up.
Description	Description of the interface.
Last clearing of counters	The most recent time that the reset counters controller cpos command was executed. This field displays Never if this command has not been executed since the device startup.
Current system time	If you do not configure a time zone, the system time is displayed in the format of YYYY-MM-DD HH:MM:SS. If you configure a time zone, the system time is displayed in the format of YYYY-MM-DD HH:MM:SS UTC±HH:MM:SS.
Frame-format SDH, multiplex AU-4, clock master, loopback none	Physical layer information of the CPOS interface: ·     The framing format is SDH. ·     The multiplexing path is AU-4. ·     The clock mode is master. ·     Loopback is disabled.
SD threshold: 6 , SF threshold: 3	SD threshold and SF threshold of the CPOS interface.
Optical	Transmission medium.
Vendor PN	Electronic label of the module vendor.
Vendor Name	Name of the module vendor.
Wavelength	Central wavelength of the transmitted laser for the transceiver module, in nm
Transfer Distance	For a single-mode module, xx indicates the transmission distance in km. For other modules, xx indicates the distance in m.
RX power: ndBm/100,Alarm thresholds:[x,y]dBm/100	The current Rx optical power of the transceiver module is n dBm/100. The normal range for Rx optical power is x dBm/100 to y dBm/100. The unit of Rx optical power for the transceiver module is dBm, with an accuracy of 0.01.
TX power: ndBm/100,Alarm thresholds:[x,y]dBm/100	The current Tx optical power of the transceiver module is n dBm/100. The normal range for Tx optical power is x dBm/100 to y dBm/100. The unit of Tx optical power for the transceiver module is dBm, with an accuracy of 0.01.
Regenerator section	Alarm and error statistics for the regenerator section.
Tx: J0	Transmitted overhead bytes.
Rx: J0	Received overhead bytes.
Alarm	Alarm statistics.
Error	Error statistics.
Multiplex section	Alarm and error statistics for the multiplex section.
Higher order Path(VC-4-1)	Higher-order path. The multiplex path is AU-4. There is only one VC-4 for STM-1.

 

Related commands

display controller cpos e1

display controller cpos e1

Use display controller cpos e1 to display status information for an E1 channel on a CPOS interface.

Syntax

display controller [ cpos cpos-number e1 e1-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

cpos cpos-number: Specifies a CPOS interface by its number.

e1 e1-number: Specifies the number of an E1 channel on the CPOS interface, in the range of 1 to 63.

Usage guidelines

If you do not specify the cpos cpos-number e1 e1-number option, this command displays status information for CPOS interfaces. If you specify the cpos cpos-number e1 e1-number option, this command displays errors and alarms that occurred to lower-order paths and E1 frames.

Examples

# Display the status information of E1 channel 1 on CPos 1/1/1.

<Sysname> display controller cpos 1/1/1 e1 1

Cpos 1/1/1

Current state: DOWN

Description: Cpos 1/1/1 Interface

Last clearing of counters: Never

Current system time:2020-08-08 13:48:51

Last time when physical state changed to up:-

Last time when physical state changed to down:2020-08-07 14:51:56

  Alarm:  LP-AIS  LP-RDI  LP-J2-Mismatched

  ERROR:  BIP2 0, FEBE 13976819

  TX: J2: "" 

  RX: J2: "" 

  TX: LPC2: 0x02 

  RX: LPC2: 0x07 

 

CE1  1 is down

  Frame-format: NO-CRC4, Clock: slave,  Loopback: none 

  Alarm:  AIS

  ERROR:  Fer 0

Table 3 Command output

Field	Description
Current state	Physical link state of the interface: ·     Administratively DOWN—The interface has been shut down by using the shutdown command. ·     DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). ·     UP—The interface is both administratively and physically up.
Description	Description of the interface.
TxFlag	Transmitted overhead bytes.
RxFlag	Received overhead bytes. If the J2 overhead bytes are invisible characters, this field displays RxFlag: J2: unknow.
Alarm	Alarm statistics.
Error	Error statistics.
CE1 1 (1-1-1-1) is down	E1 channel 1 is physically down. The four sections in 1-1-1-1 represent the VC-4 number, TUG-3 number, TUG-2 number, and TU-12 number, from left to right.
Frame-format: NO-CRC4,  clock: slave,  loopback: none	Physical layer information for the E1 channel: ·     The framing format is no-CRC4. ·     The clock mode is slave. ·     Loopback is disabled.

 

e1 channel-set

Use e1 channel-set to bundle timeslots on an E1 channel into one channel set.

Use undo e1 channel-set to remove a channel set.

Syntax

e1 e1-number channel-set set-number timeslot-list range

undo e1 e1-number channel-set set-number

Default

No channel sets exist.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

set-number: Specifies a channel set number in the range of 0 to 30.

timeslot-list range: Specifies a comma-separated list of timeslot items. An item can be an individual timeslot or a timeslot range. Use a hyphen (-) to separate the start and end timeslot numbers of a range. The value range for the timeslot number is 1 to 31.

Usage guidelines

When the E1 channel is channelized, timeslot 0 is used for synchronization. The other 31 timeslots can be bundled to form one or multiple channel sets. For each channel set, the system automatically creates a serial interface numbered in the format interface number/channel number:channel set number.

For successful communication, make sure the local end has the same timeslot bundling settings as the remote end.

Examples

# Bundle timeslots 1 to 31 into a channel set on E1 channel 63.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 63 channel-set 1 timeslot-list 1-31

# Enter the view of the serial interface created for the channel set.

[Sysname-Cpos 1/1/1] quit

[Sysname] interface serial 1/1/1/63:1

[Sysname-Serial1/1/1/63:1]

Related commands

e1 unframed

e1 clock

Use e1 clock to set the clock mode of an E1 channel.

Use undo e1 clock to restore the default clock mode of an E1 channel.

Syntax

e1 e1-number clock { master | slave }

undo e1 e1-number clock

Default

The clock mode of an E1 channel is slave.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

master: Sets the clock mode to master.

slave: Sets the clock mode to slave.

Usage guidelines

The clock mode settings of E1 channels on a CPOS interface are independent of one another.

Set the clock mode on an E1 channel depending on its connected device.

·     If the connected device is a SONET/SDH device, enable the slave clock mode on the channel. The SONET/SDH network clock is more precise than the clock provided by the device.

·     If the E1 channel is directly connected to a router, make sure the E1 channel uses a different clock mode than the peer end.

Examples

# Set the clock mode to master on E1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 1 clock master

e1 flag

Use e1 flag to set the C2 or J2 overhead byte for an E1 channel.

Use undo e1 flag to restore the default C2 or J2 overhead byte for an E1 channel.

Syntax

e1 e1-number flag { c2 c2-value | j2 sdh j2-string }

undo e1 e1-number flag { c2 | j2 sdh }

Default

The C2 byte value is 2 (hexadecimal).

The cyclic value for the J2 byte is null.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies an E1 channel by its number. The value range for this argument is 1 to 63.

c2: Specifies the low-order channel signal tag byte (C2).

c2-value: Specifies the value of the C2 byte. The value range is 0 to 7 (except 5) in hexadecimal notation.

j2: Specifies the low-order channel trace byte (J2).

sdh: Specifies the trace byte in SDH format.

j2-string: Specifies the string filled in the J2 byte, a string of 1 to 15 characters for SDH or a string of 1 to 62 characters for SONET.

Examples

# Set the C2 byte to 7 (hexadecimal) for E1 channel 3 on CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 3 flag c2 7

e1 frame-format

Use e1 frame-format to set the framing format of an E1 channel.

Use undo e1 frame-format to restore the default framing format of an E1 channel.

Syntax

e1 e1-number frame-format { crc4 | no-crc4 }

undo e1 e1-number frame-format

Default

The framing format of an E1 channel is no-CRC4.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

crc4: Sets the framing format to CRC4.

no-crc4: Sets the framing format to no-CRC4.

Examples

# Set the framing format to CRC4 for E1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 1 set frame-format crc4

e1 loopback

Use e1 loopback to set the loopback mode for an E1 channel.

Use undo e1 loopback to disable loopback for an E1 channel.

Syntax

e1 e1-number loopback { local | remote }

undo e1 e1-number loopback

Default

Loopback is disabled on an E1 channel.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

local: Enables internal loopback.

remote: Enables external loopback.

Usage guidelines

You can test E1 channels by using the loopback command with different keywords.

·     In an internal loopback, the sender's data is directly looped to the receiver.

·     In an external loopback, data received by the receiver is looped back directly without passing through the E1 framer.

Examples

# Enable internal loopback on E1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 1 loopback local

Related commands

display controller cpos e1

e1 shutdown

Use e1 shutdown to shut down an E1 channel.

Use undo e1 shutdown to bring up an E1 channel.

Syntax

e1 e1-number shutdown

undo e1 e1-number shutdown

Default

E1 channels are up.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

Usage guidelines

When you shut down an E1 channel, its associated serial interfaces are also shut down.

Examples

# Shut down E1 channel 1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 1 shutdown

e1 unframed

Use e1 unframed to configure an E1 channel on a CPOS interface to operate in unframed mode.

Use undo e1 unframed to restore the default operating mode of an E1 channel on a CPOS interface.

Syntax

e1 e1-number unframed

undo e1 e1-number unframed

Default

E1 channels on a CPOS interface operate in framed mode.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

e1-number: Specifies the number of an E1 channel on the CPOS interface. The value range for this argument is 1 to 63.

Usage guidelines

E1 channels on CPOS interfaces support the unframed (clear channel) mode and the framed (channelized) mode.

·     In unframed mode, an E1 channel can form a 2.048 Mbps serial interface without timeslot division. It is numbered in the format of interface-number/channel-number:0.

·     In framed mode, all timeslots except timeslot 0 on the E1 channel can be bundled randomly to form serial interfaces.

Examples

# Set E1 channel 3 on CPos 1/1/1 to operate in unframed mode.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] e1 3 unframed

flag

Use flag to set an overhead byte for SDH frames.

Use undo flag to restore the default.

Syntax

flag { c2 path-number c2-value | s1s0 path-number s1s0-value }

undo flag { c2 path-number | s1s0 path-number }

flag { j0 | j1 path-number } sdh flag-value

undo flag { j0 | j1 path-number } sdh

Default

·     The C2 byte value is 2 (hexadecimal).

·     The value of S1S0 is 0 (hexadecimal) for SONET and 2 (hexadecimal) for SDH.

·     The J0 byte value for SDH is null.

·     The J1 byte value for SDH is null.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

c2 path-number c2-value: Specifies the number of a path and the path signal label byte. The value range for the c2-value argument is 0 to ff in hexadecimal notation.

s1s0 path-number s1s0-value: Specifies the number of a path and the AU type and TU type. T he value range for the s1s0-value argument is 0 to 3.

j0: Specifies the regenerator section trace message, which is a section overhead byte used to detect the continuity of the connection between two interfaces at the section layer.

j1 path-number: Specifies the path trace message, which is a higher-order path overhead byte used to detect the continuity of the connection between two interfaces at the path layer.

sdh: Specifies the SDH framing format.

flag-value: Specifies the flag value for SDH frames. In SDH frames, the flag value is a string of 1 to 15 characters for both the J0 and J1 bytes.

Usage guidelines

SDH frames provide a variety of overhead bytes for operation and maintenance (OAM) such as layered management on transmission networks.

J1, J0 and C2 are used to support interoperability between devices from different countries, areas, and vendors.

J0 is a section overhead byte used for detecting the continuity of the connection between two interfaces at the section layer. J1 and C2 are higher-order path overhead bytes. The J1 byte is used for detecting the continuity of the connection between two interfaces at the path layer. The C2 byte is used for indicating the multiplexing structure of a VC frame and the property of payload.

S1S0 are two bits in the H1 byte. They are used by ITU to indicate the AU-n/TU-n type. S1S0 must be set to 2 for AU-4, AU-3, and TU-3.

Examples

# Set the J0 byte to aa on CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] flag j0 sdh aa

Related commands

display controller cpos

frame-format

Use frame-format to set the framing format on a CPOS interface.

Use undo frame-format to restore the default framing format on a CPOS interface.

Syntax

frame-format { sdh | sonet }

undo frame-format

Default

The framing format on a CPOS interface is SDH.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

sdh: Specifies the SDH framing format.

sonet: Specifies the SONET framing format.

Examples

# Set the framing format to SONET on CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] frame-format sonet

link-delay

Use link-delay to set the physical state change suppression interval on a CPOS interface.

Use undo link-delay to restore the default.

Syntax

link-delay seconds

undo link-delay

Default

Physical state change suppression is disabled.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

seconds: Sets the physical state change suppression interval in seconds. The value range is 0 to 30.

Usage guidelines

When the physical state changes, a CPOS interface reports the event to the upper-layer modules, and generates log and SNMP notification messages. To reduce system overhead caused by frequent physical state changes, use this command to suppress physical state changes within an interval. The interface will ignore any changes that occur during each suppression interval. When the suppression interval expires, the interface will not report the change event or generate messages if the change is removed.

For example, the suppression interval starts when the interface changes from up to down. The interface reports the change event and generates messages if it is still down when the interval expires. The interface does not report the change event or generate messages if it is up when the interval expires.

This command suppresses link-down events.

Examples

# Set the physical state change suppression interval to 8 seconds on CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] link-delay 8

loopback

Use loopback to enable loopback on a CPOS interface.

Use undo loopback to disable loopback on a CPOS interface.

Syntax

loopback { local | remote }

undo loopback

Default

Loopback is disabled on a CPOS interface.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

local: Enables internal loopback to test the physical interface.

remote: Enables external loopback to test the cable connected to the interface.

Usage guidelines

Loopback is intended for testing only. Disable the feature when the interface is operating correctly.

Examples

# Enable external loopback testing on CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] loopback remote

multiplex mode

Use multiplex mode to set AUG multiplexing mode for a CPOS interface.

Use undo multiplex mode to restore the default AUG multiplexing mode for a CPOS interface.

Syntax

multiplex mode { au-3 | au-4 }

undo multiplex mode

Default

The AUG multiplexing mode is au-4 on a CPOS interface in SDH mode.

The AUG multiplexing mode is au-3 on a CPOS interface in SONET mode.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

au-3: Gets AUG through AU-3.

au-4: Gets AUG through AU-4.

Usage guidelines

SDH provides the following payload mapping/multiplexing solutions:

·     ANSI—Uses the AU-3 multiplexing scheme. This scheme multiplexes the lower-order payload to the VC-3 higher-order path. VC-3 plus an AU pointer forms AU-3. Three such AU-3s can be synchronized and multiplexed to form one AUG.

·     ETSI—Uses the AU-4 multiplexing scheme. This scheme multiplexes the lower-order payload to the VC-4 higher-order path. VC-4 plus an AU pointer forms an AU-4. This AU-4 can be synchronized and multiplexed to form one AUG.

When the CPOS interface is operating in SDH mode, you can multiplex AUG to AU-4 or AU-3 by using the multiplex mode command.

When the CPOS interface is operating in SONET mode, AUG can be multiplexed only to AU-3, which cannot be modified.

Countries and regions use different multiplexing schemes. You must use the same multiplexing scheme as the peer device. For example, the AU-4 multiplexing scheme is used in China.

Examples

# In SDH mode, multiplex AUG to AU-3.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] frame-format sdh

[Sysname-Cpos 1/1/1] multiplex mode au-3

Related commands

frame-format

reset counters controller cpos

Use reset counters controller cpos to clear CPOS interface statistics.

Syntax

reset counters controller cpos [ interface-number ]

Views

User view

Predefined user roles

network-admin

Parameters

cpos [ interface-number ]: Specifies a CPOS interface by its number. If you do not specify a CPOS interface, this command clears statistics for all CPOS interfaces.

Usage guidelines

Use this command to clear history statistics before you collect traffic statistics for a time period.

To display CPOS interface statistics, use the display controller cpos command.

Examples

# Clear statistics for CPos 1/1/1.

<Sysname> reset counters controller cpos 1/1/1

Related commands

display controller cpos

shutdown

Use shutdown to shut down a CPOS physical interface.

Use undo shutdown to bring up a CPOS physical interface.

Syntax

shutdown

undo shutdown

Default

The CPOS physical interface is up.

Views

CPOS interface view

Predefined user roles

network-admin

Usage guidelines

The shutdown command on the CPOS physical interface shuts down all E1 channels and serial interfaces formed by timeslot bundles. As a result, they stop transmitting and receiving data. To bring them up, use the undo shutdown command on the CPOS physical interface.

Examples

# Shut down CPos 1/1/1.

<Sysname> system-view

[Sysname] controller cpos 1/1/1

[Sysname-Cpos 1/1/1] shutdown

threshold

Use threshold to configure the power for setting the SD or SF alarm threshold on a CPOS interface.

Use undo threshold to restore the default power for setting the SD or SF alarm threshold on a CPOS interface.

Syntax

threshold { sd sdvalue | sf sfvalue } *

undo threshold [ sd | sf ]

Default

The sdvalue argument is 6, and the sfvalue argument is 3.

Views

CPOS interface view

Predefined user roles

network-admin

Parameters

sd: Specifies the SD alarm threshold.

sdvalue: Specifies the power for setting the SD alarm threshold. The threshold is 10e to the power of negative sdvalue (10e–sdvalue). The value range for this argument is 3 to 9. The greater the value, the lower the SD alarm threshold.

sf: Specifies the SF alarm threshold. The SF alarm threshold must be higher than the SD alarm threshold.

sfvalue: Specifies the power for setting the SF alarm threshold. The threshold is 10e to the power of negative sdvalue (10e–sfvalue). The value range for this argument is 3 to 9. The greater the value, the lower the SF alarm threshold.

Usage guidelines

SD and SF alarms indicate line performance. SF alarms are more severe than SD alarms.

·     An SD alarm occurs if the bit error rate reaches the SD alarm threshold.

·     An SF alarm occurs if the bit error rate reaches the SF alarm threshold.

Examples

# Set the SD threshold to 10e to the power of negative 4 (10e–4) on CPos 1/1/1.

<Sysname> system-view

[Sysname] interface cpos 1/1/1

[Sysname-Cpos 1/1/1] threshold sd 4