cbLoopback

CISCO-BERT-MIB · .1.3.6.1.4.1.9.9.185.1.1.1.1.5

Object

column Enumeration

This object specifies the type of loopback established.
Possible values are:
              
farEndLineLoopback(1): This loopback occurs at the CPE upon
	receiving a special code from the
	device which initiates the loopback.
	Upon receiving the loop activation request
	code, the CPE enters a Line loop mode in which it
	returns the entire line back to the initiator.
	The CPE will continue to return the data
	back to the initiator until it receives
	loopback deactivation request code.	
              
remoteLineLoopback(3): This loopback is established 
	at the Near-end.
	In this loopback the entire line is looped back to the
	Far-end with a) bit-sequence integrity maintained,
	b) no change in framing, and c) no removal of bi-
	polar violations.        
              
localLoopback(3): This is also known as metallic loopback.
	This loopback is used for checking the
	internal circuitry of the T3/E3, T1/E1 device.
	Only for physical lines.
              
farEndPayloadLoopback(4): This loopback occurs at the
	CPE upon receiving a special code from the
	device which initiates the loopback.
	Upon receiving the loop activation request
	code, CPE enters a Payload loop mode in which it
	returns the Payload of the received data back
	to the initiator.
	The CPE will continue to return the data
	back to the initiator until it receives
	loopback deactivation request code.
              
remotePayloadLoopback(5): This loopback is established 
	at the Near-end.
	In this loopback the signal that is returned to the
	Far-end consists of the payload of the received signal
	(with bit sequence integrity retained) and newly
	generated framing information.
              
noLoopback(6):   There is no loopback established
	on the device.

Context

MIB: CISCO-BERT-MIB
OID: .1.3.6.1.4.1.9.9.185.1.1.1.1.5
Type: column
Access: readonly
Status: current
Parent: cbConfEntry
Table: cbConfTable
Siblings: 14

Syntax

Enumeration

Values & Constraints

Enumerated Values

`1`	farEndLineLoopback
`2`	remoteLineLoopback
`3`	localLoopback
`4`	farEndPayloadLoopback
`5`	remotePayloadLoopback
`6`	noLoopback

Related Objects

Sibling Objects

Object	Type	Syntax	OID
cbTestPattern The BERT pattern to be sent and expected to be received. An implementation may choose to support only selected patterns. In some implementations, this object can not be modified w…	column	BertPatterns	`.1.3.6.1.4.1.9.9.185.1.1.1.1.1`
cbOperStatus This object shows the status of BERT in the shelf. The values for this object are valid only when cbRowStatus contains active(1). Possible values for this object: …	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.10`
cbFailedReason This object contains the reason for the BERT failure. This object gives the additional information when cbOperStatus is set to bertFailed(6). The possible val…	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.11`
cbStartDateAndTime The Date and Time when the last BERT testing is started on the interface. This object is valid only when cbRowStatus is active(1).	column	SNMPv2-TCDateAndTime	`.1.3.6.1.4.1.9.9.185.1.1.1.1.12`
cbDS0DPCodeIteration Valid only with cbLoopbackCode = latchDS0Drop. DSP-OP devices can be cross connected in the central office in a daisy chain. By this, the user has capability to put any of the d…	column	Integer32	`.1.3.6.1.4.1.9.9.185.1.1.1.1.13`
cbRowStatus The status of this conceptual row. This object is used for create or modify or deleting an entry from this table. To create a row in this table, a manager must set…	column	SNMPv2-TCRowStatus	`.1.3.6.1.4.1.9.9.185.1.1.1.1.14`
cbDs0BitMap This object is only used IF the interface type is DS1 (ifType is 18 on ifTable). This object is used to indicate which DS0 is involved on the BERT. The defualt value (DEFVAL) is v…	column	Bits	`.1.3.6.1.4.1.9.9.185.1.1.1.1.15`
cbUserPattern The object used for configuring the user defined pattern for BERT. This is the fixed repeating BERT pattern sent and expected to be received when the cbTestPattern object is set …	column	OctetString	`.1.3.6.1.4.1.9.9.185.1.1.1.1.2`
cbBertTxPatternInv This controls inversion of the transmit BERT pattern. Possible values are : notInverted(1): Pattern is transmitted normally. inverted(2): Each Mark is replaced by …	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.3`
cbBertRxPatternInv This controls inversion of the received BERT pattern. Possible values are : notInverted(1) : Pattern received is not inverted. inverted(2) : each Mark is repla…	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.4`
cbLoopbackCode This object specifies the type of the end device and the type of loopback code used. Latching Loopback: Latching Loopback is appropriate with 64 kbit/s DS0-A rate. …	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.6`
cbSingleBitErrorInsert This object is used for inserting single bit error in the transmitted BERT pattern. The possible values are: noError(1) : do not insert single …	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.7`
cbErrorInsertionRate This object is used for injecting continuous errors into transmitted BERT pattern. The errors are inserted in a BERT pattern sent, in order to do sanity check on receive interf…	column	Enumeration	`.1.3.6.1.4.1.9.9.185.1.1.1.1.8`
cbDuration This object specifies the duration for which BERT is to be run.	column	seconds Integer32	`.1.3.6.1.4.1.9.9.185.1.1.1.1.9`