DECbit and Red

Question 1

What is DECbit?

Answer 1

Bit in packet header set by router when congestion happens, sender adjusts the rate based on the fraction of packets

<50%: increase congestion window by 1 packet
>=50%: decrease congestion window by 12.5%

Question 2

What is RED?

Answer 2

Routing algorithm that randomly drops packets before the queue is full to signal congestion early