The maximum PDU Length that is sent in
the Common Session Parameters of an Initialization
Message. According to the LDP Specification [RFC3036]
a value of 255 or less specifies the
default maximum length of 4096 octets, this is why
the value of this object starts at 256. The operator
should explicitely choose the default value (i.e. 4096),
or some other value.
The receiving LSR MUST calculate the maximum PDU
length for the session by using the smaller of its and
its peer's proposals for Max PDU Length.