1-7
The priority in the 802.1Q tag header is called 802.1p precedence, because its use is defined in IEEE
802.1p.
Table 1-3
presents the values for 802.1p precedence.
Table 1-3
Description on 802.1p precedence
802.1p precedence (decimal)
802.1p precedence (binary)
Description
0 000
best-effort
1 001
background
2 010
spare
3 011
excellent-effort
4 100
controlled-load
5 101
video
6 110
voice
7 111
network-management
