The value of tmnxMcPathBdlChlVdoRTState specifies the state of
Retransmission (RT) Server on this multicast channel.
When this object has a value of 'enabled', RT server is enabled. When
its value is 'disabled', RT server is disabled. When its value is
'inherit', state of RT server is inherited from the value of
tmnxMcPathBdlVdoRTState which specifies the state of RT server at
the bundle level.