dcLmpProductExtendedHelloDeadIvl

When set to a non-zero value greater than                  
lmpCcHelloDeadIntervalNegotiated, the object overrides the 
value of lmpCcHelloDeadIntervalNegotiated for a control    
channel to indicate how long the device should wait (in    
milliseconds) before declaring that control channel dead.  
                                                                         
When set to a non-zero value less than or equal to         
lmpCcHelloDeadIntervalNegotiated for a control channel,    
this field has no effect for that control channel.         
                                                                         
When set to zero (the default value), this field is not    
used by LMP.                                               
                                                                         
Use of this object is strongly discouraged because not     
detecting control channel failure in a timely manner can   
cause negative effects.  For example, as follows.          
                                                                         
-  BeginVerify messages will continue to be retried after  
   lmpCcHelloDeadIntervalNegotiated has expired, which     
   will block anonymous verification of TELs with other    
   neighbors.  On hardware with limited termination        
   capability for sending Test messages, this behaviour    
   might block all link verification to all neighbors, not 
   just anonymous verification.                            
                                                                         
-  If there are multiple control channels to a neighbor    
   and the primary control channel fails, DC-LMP will      
   continue using the failed control channel to send all   
   message types that are not control channel specific,    
   rather than another control channel becoming the        
   primary control channel.  Hence the neighbor will not   
   receive any of these messages.                          
                                                                         
-  Hello messages, and message types that are not control  
   channel specific, continue to be sent over the control  
   channel after the lmpCcHelloDeadIntervalNegotiated has  
   expired.  This behavior does not conform to RFC 4204.   
                                                                         
However, this object can be set to a non-zero value when   
                                                                         
-  the local node wishes to support LMP Graceful Restart   
   procedures for neighbors that restart and                   
-  LMP neighbors may take longer to restart than the       
   maximum possible value for the                          
   lmpCcHelloDeadIntervalNegotiated.                       
                                                                         
The object should be set to a value that is as small as     
possible because of the negative effects listed above.     
                                                                         
This field may be changed at any time.  The new value is   
used the next time that the HelloDead timer is started for 
each Control Channel.

MIB

DC-LMP-PROD

OID

.1.3.6.1.4.1.629.10.5.1.1.1.33

Type

column

Access

readwrite

Status

current

Units

milliseconds

Parent

dcLmpProductEntry