Introduction
device, and to have it pause its transmission while the receiving device processes the frames already received. Flow control can be enabled or disabled on a
The 9E531-24 supports the following two types of flow control:
•frame based 802.3x
•back pressure
Frame based 802.3x flow control is supported on all Ethernet ports operating in the full duplex mode.
Back pressure flow control is supported on all Ethernet ports operating in the standard mode of operation.
802.1p Port Priority
The IEEE 802.1p standard is used to assign a default priority to the frames received without priority information in their tag header, and to map prioritized frames to the appropriate transmit queues.
The default
Table
Priority Indicator | Transmit Queue |
|
|
|
|
7 | 3 |
|
|
6 | 3 |
|
|
5 | 2 |
|
|
4 | 2 |
|
|
3 | 1 |
|
|
2 | 0 |
|
|
1 | 0 |
|
|
0 | 1 |
|
|
Switching Options
The