cifLFELoopbackDeviceAndCode

This object specifies the type of the end device and
the type of mechanism used to establish the loopback.
Loopback type may not be modified once the farend loopback
is established. 
              
Latching Loopback: Latching Loopback is appropriate with
64 kbit/s DS0-A rate.  Once invoked by a specific activation
sequence, it typically remains in effect until released by
another specific code sequence.
              
non-latching loopback:  Non latching activation involves
continuous transmission of loopback command codes, followed
by test data interspersed with command codes.
               
nonLatchOCUwithOneDevice(1): Non-latching OCU with 
         one device.
              
nonLatchOCUwithChainDevices(2): Non-latching OCU 
         with chain of devices.
              
nonLatchCSU(3): Non-latching CSU.
              
nonLatchDSU(4): Non-latching DSU.
              
latchDS0Drop(5): Latching DS0-DP Drop device.
              
latchDS0Line(6): Latching DS0-DP line device.
              
latchOCU(7): Latching OCU.
              
latchCSU(8): Latching CSU.
              
latchDSU(9): Latching DSU.
              
latchDSU(9): Latching DSU .
              
latchHL96(10): Latching HL96 device.
              
v54PN127Polynomial(8): For fractional T1.
         This loopback is based on 
         CCITT-ITU V.54 and is 
         used to place either a single 
         DS0 or a DS0 Bundle(N*DS0) in 
         loopback mode.
              
lineInband(12): This is used to loop back the
         entire T1 line at the far end.
         This is a repeating 5-bit
         pattern(00001), i.e. 00001000010001....
                                             
lineLoopbackESF(13): This loopback results in a full
         1.544Mbit/s loopback of the 
         incoming signal at the far end.
         The loopback is activated (latched) and
         deactivated by a bit sequence defined in
         ANSI T1.403 - 1995.
         This corresponds to Facility Data Link
         (FDL) loopbacks on a T1 channel.
         This causes a repeating, 16-bit ESF data
         link code word (00001110 11111111) to be
         sent to the remote end requesting that it 
         enter into a network line loopback.
              
payloadLoopbackESF(14): This loopback results in 
         1.536 Mbit/s
         loopback of the payload of the incoming
         signal at the far end. The loopback
         is activated(latched) and deactivated
         by a bit sequence defined in
         ANSI T1.403 - 1995.
         This corresponds to Facility Data Link
         (FDL) loopbacks on a T1 channel.
         This causes a repeating, 16-bit ESF data
         link code word (00010100 11111111) to be
         sent to the remote end requesting that it 
         enter into a network payload loopback.
              
noCode (15): LoopBack is on this device - NearEnd.
              
lineLoopbackFEAC(16): The FEAC channel is used to request 
         a line loopback
         at the Far-end. Loopback activate and 
         de-activate are specified using the 
         code-words specified in ANSI T1.404-1994. 
              
smartJackInband(17): Inband loop code for SmartJack (a Telco owned
         device that represents the demarcation point of T1 service),
         Ref: TR-TSY-000312

MIB

CISCO-IF-LOOPBACK-MIB

OID

.1.3.6.1.4.1.9.9.9399.1.1.1.1.3

Type

column

Access

readwrite

Status

current

Parent

cifLConfEntry

Table

cifLConfTable

Siblings

3