优先级映射缺省配置
Diffserv域中接口入方向上优先级与服务等级(PHB行为)/颜色的映射
802.1p优先级 |
PHB行为 |
Color |
---|---|---|
0 |
BE |
green |
1 |
AF1 |
green |
2 |
AF2 |
green |
3 |
AF3 |
green |
4 |
AF4 |
green |
5 |
EF |
green |
6 |
CS6 |
green |
7 |
CS7 |
green |
DSCP |
PHB行为 |
Color |
DSCP |
PHB行为 |
Color |
---|---|---|---|---|---|
0 |
BE |
green |
32 |
AF4 |
green |
1 |
BE |
green |
33 |
BE |
green |
2 |
BE |
green |
34 |
AF4 |
green |
3 |
BE |
green |
35 |
BE |
green |
4 |
BE |
green |
36 |
AF4 |
yellow |
5 |
BE |
green |
37 |
BE |
green |
6 |
BE |
green |
38 |
AF4 |
red |
7 |
BE |
green |
39 |
BE |
green |
8 |
AF1 |
green |
40 |
EF |
green |
9 |
BE |
green |
41 |
BE |
green |
10 |
AF1 |
green |
42 |
BE |
green |
11 |
BE |
green |
43 |
BE |
green |
12 |
AF1 |
yellow |
44 |
BE |
green |
13 |
BE |
green |
45 |
BE |
green |
14 |
AF1 |
red |
46 |
EF |
green |
15 |
BE |
green |
47 |
BE |
green |
16 |
AF2 |
green |
48 |
CS6 |
green |
17 |
BE |
green |
49 |
BE |
green |
18 |
AF2 |
green |
50 |
BE |
green |
19 |
BE |
green |
51 |
BE |
green |
20 |
AF2 |
yellow |
52 |
BE |
green |
21 |
BE |
green |
53 |
BE |
green |
22 |
AF2 |
red |
54 |
BE |
green |
23 |
BE |
green |
55 |
BE |
green |
24 |
AF3 |
green |
56 |
CS7 |
green |
25 |
BE |
green |
57 |
BE |
green |
26 |
AF3 |
green |
58 |
BE |
green |
27 |
BE |
green |
59 |
BE |
green |
28 |
AF3 |
yellow |
60 |
BE |
green |
29 |
BE |
green |
61 |
BE |
green |
30 |
AF3 |
red |
62 |
BE |
green |
31 |
BE |
green |
63 |
BE |
green |
服务等级与端口队列索引关系
缺省情况下,内部优先级(报文的服务等级)与端口队列的对应关系是一对一。在实际部署时,有时需要调整服务等级与队列的映射关系或者将不同的服务等级放入同一队列中进行调度,从而有效地节约设备缓存。设备按照内部优先级将报文送入不同的端口队列,从而针对队列进行流量整形、拥塞避免、队列调度等处理。
设备支持的内部优先级与各队列之间的对应关系如表3-4和表3-5所示。
内部优先级 |
队列索引 |
---|---|
BE(未知单播报文、组播报文、广播报文) |
0 |
AF1(未知单播报文、组播报文、广播报文) |
1 |
AF2(未知单播报文、组播报文、广播报文) |
1 |
AF3(未知单播报文、组播报文、广播报文) |
1 |
AF4(未知单播报文、组播报文、广播报文) |
2 |
EF(未知单播报文、组播报文、广播报文) |
2 |
CS6(未知单播报文、组播报文、广播报文) |
6 |
CS7(未知单播报文、组播报文、广播报文) |
6 |
BE(已知单播报文) |
0 |
AF1(已知单播报文) |
1 |
AF2(已知单播报文) |
2 |
AF3(已知单播报文) |
3 |
AF4(已知单播报文) |
4 |
EF(已知单播报文) |
5 |
CS6(已知单播报文) |
6 |
CS7(已知单播报文) |
7 |
Diffserv域中出方向上服务等级(PHB行为)/颜色与优先级的映射
PHB行为 |
Color |
802.1p优先级 |
---|---|---|
BE |
green |
0 |
BE |
yellow |
0 |
BE |
red |
0 |
AF1 |
green |
1 |
AF1 |
yellow |
1 |
AF1 |
red |
1 |
AF2 |
green |
2 |
AF2 |
yellow |
2 |
AF2 |
red |
2 |
AF3 |
green |
3 |
AF3 |
yellow |
3 |
AF3 |
red |
3 |
AF4 |
green |
4 |
AF4 |
yellow |
4 |
AF4 |
red |
4 |
EF |
green |
5 |
EF |
yellow |
5 |
EF |
red |
5 |
CS6 |
green |
6 |
CS6 |
yellow |
6 |
CS6 |
red |
6 |
CS7 |
green |
7 |
CS7 |
yellow |
7 |
CS7 |
red |
7 |
PHB行为 |
Color |
DSCP |
---|---|---|
BE |
green |
0 |
BE |
yellow |
0 |
BE |
red |
0 |
AF1 |
green |
10 |
AF1 |
yellow |
12 |
AF1 |
red |
14 |
AF2 |
green |
18 |
AF2 |
yellow |
20 |
AF2 |
red |
22 |
AF3 |
green |
26 |
AF3 |
yellow |
28 |
AF3 |
red |
30 |
AF4 |
green |
34 |
AF4 |
yellow |
36 |
AF4 |
red |
38 |
EF |
green |
46 |
EF |
yellow |
46 |
EF |
red |
46 |
CS6 |
green |
48 |
CS6 |
yellow |
48 |
CS6 |
red |
48 |
CS7 |
green |
56 |
CS7 |
yellow |
56 |
CS7 |
red |
56 |
PHB行为 |
Color |
EXP优先级 |
---|---|---|
BE |
green |
0 |
BE |
yellow |
0 |
BE |
red |
0 |
AF1 |
green |
1 |
AF1 |
yellow |
1 |
AF1 |
red |
1 |
AF2 |
green |
2 |
AF2 |
yellow |
2 |
AF2 |
red |
2 |
AF3 |
green |
3 |
AF3 |
yellow |
3 |
AF3 |
red |
3 |
AF4 |
green |
4 |
AF4 |
yellow |
4 |
AF4 |
red |
4 |
EF |
green |
5 |
EF |
yellow |
5 |
EF |
red |
5 |
CS6 |
green |
6 |
CS6 |
yellow |
6 |
CS6 |
red |
6 |
CS7 |
green |
7 |
CS7 |
yellow |
7 |
CS7 |
red |
7 |