Glossary: TCP/IP in Depth, Part 1
DSCP classes
Also written: expedited forwarding, network control, DSCP 46, DSCP 48, tos 0xb8, tos 0xc0
Named DSCP values: 46, expedited forwarding, for voice packets that routers should send first (tos 0xb8), and 48, network control, which Linux puts on its own ICMP errors (tos 0xc0).
Where the book teaches it
Related terms
DSCP (Differentiated Services Code Point)tos (type of service)