ifTableXtndOperStatus

An extension to ifOperStatus, for showing faults 
and partial faliures, including aggregation of upper 
layer faults (up to but not including L3).
The following Pseudo code describes how the MIB
value is calculated for different interfaces:
if (AdminStatus is down) {   
   XtndOperStatus= adminDown
} else
if (OperStatus is testing) {
   XtndOperStatus = testing
} else
if (This is a backup interface and its currently in
    dormant state)
{
  XtndOperStatus= dormantDown
} else
if (OperStatus = down) {
   XtndOperStatus = faultDown
} else
switch interface type {   
  case E1/T1:      
      if (XtndOperStatus of any Channel 
          Group over this I/F is (faultDown 
          or partialDownFault)){
            XtndOperStatus = partialDownFault
      } else   
           XtndOperStatus = up
      break;
   case USP or Channel Group:
      if (XtndOperStatus of FR or PPP I/F over 
          this I/F is (faultDown or
          partialDownFault)){
        XtndOperStatus = partialDownFault
      } else   
      XtndOperStatus = up
      break;
case FastEthernet or loopback:      
if (XtndKeepAliveStatus is Down)  {
XtndOperStatus = keepAliveDown
} else   XtndOperStatus = up      
break;   
case PPP or FabricFastEthernet:         
XtndOperStatus = up      
break;                   
case Frame Relay:
      if (XtndOperStatus of any Sub FR over this
          I/F is (faultDown or
          partialDownFault)) {
         XtndOperStatus = partialDownFault
      } else   
      XtndOperStatus = up
      break;
   case Frame Relay Sub I/F:
      if (at least one DLCI is up, and at least
         one is down){
        XtndOperStatus = partialDownFault
      } else
        XtndOperStatus = up
      break;
   case Modem:
       If (modem is undetected) {XtndOperStatus = modemUndetected} 
       elseif (modem is ready to accept calls){XtndOperStatus = modemReady)
       elseif (a dialer is dialing the modem) {XtndOperStatus = modemDialing}  
       elseif (modem is connected - incoming call) 
        {XtndOperStatus = modemConnectedDialin}
       elseif (modem is connected - outgoing call) 
       {XtndOperStatus = modemConnectedDialout}
}

MIB

WAN-MIB

OID

.1.3.6.1.4.1.6889.2.1.6.2.2.1.1.15

Type

column

Access

readonly

Status

current

Parent

ifTableXtndEntry