Working with the M111
Configuring Quality of Service (QoS)
Very-high, high, normal, low priority
This mechanism is unique to the M111. It enables you to assign a single priority level to all traffic on a station profile. If you enable one of these priority mechanisms, it takes precedence regardless of the existing priority assigned to the traffic when it is received.
Queue | Priority value |
|
|
1 | |
|
|
2 | High |
|
|
3 | Normal |
|
|
4 | Low |
|
|
Differentiated Services (DiffServ)
This mechanism classifies traffic based on the value of the Differentiated Services (DS) codepoint field in IPv4 and IPv6 packet headers (as defined in RFC2474). The codepoint is composed of the six most significant bits of the DS field.
Queue | DiffServ | ||
DS codepoint value | |||
| |||
|
|
| |
1 | 111000 | (Network control) | |
| 110000 | (Internetwork control) | |
|
|
| |
2 | 101000 | (Critical) | |
| 100000 | (Flash override) | |
|
|
| |
3 | 011000 | (Flash) | |
| 000100 | (Routine) | |
|
|
| |
4 | 010000 | (Immediate) | |
| 001000 | (Priority) | |
|
|
|
TOS
This mechanism classifies traffic based on value of the TOS (Type of Service) field in an IP packet header.
TOS
Queue Type of Service field value
10x30, 0xE0, 0x88, 0xB8
20x28, 0xA0
30x08, 0x20
4All other TOS traffic