NSAF: An Approach for Ensuring Application-Aware Routing Based on Network QoS of Applications in SDN

Table 1

DiffServ classes [17].

Service class (application type)	QoS tolerance
	Packet loss	Delay	Jitter
Network control	Low	Low	Yes
Telephony	Very low	Very low	Very low
Signaling	Low	Low	Yes
Multimedia conferencing	Low-medium	Very low	Low
Real-time interactive	Low	Very low	Low
Broadcast video	Very low	Medium	Low
Multimedia streaming	Low-medium	Medium	Yes
Low-latency data	Low	Low-medium	Yes
OAM	Low	Medium	Yes
High-throughput data	Low	Medium-high	Yes
Standard	Not specified
Low-priority data	High	High	Yes