Mininet Delay Type!

[SalarJamal]

What is the type of delay in Mininet (shown in attached figure)?
Is it propagation delay or packet transmission delay or what?
What is the minimum allowed delay value that can be set in this field?

[BlueShahriar]

Dear @SalarJamal ,
Mininet emulates link delay by adding a constant delay to the interface. So this delay is an intentional simulation delay specified by user and is in addition to other delays like processing delay, queuing delay and propagation delay (if hardware interface is used).
Under the hood, Mininet defines a TCLink class which configures a TCIntf class to emulate link delay. At the end, netem queue discipline is used to emulate the interface delay in linux ( by running a tc qdisc ... command in linux),
Regards.