Network Port Egress Scheduling; Table 43: Scheduling Order When Multiple Saps Configured On A Port; Figure 6: Network Port Egress Scheduling - Alcatel-Lucent 7210 SAS-R6 OS Quality Of Service Manual

Overview

Network Port Egress Scheduling

Two levels of scheduling occur at the network egress:
•
•
At the queue level, the cir-level and pir-level determine the scheduling priority. The queue's pir-
weight determines the proportion of bandwidth given to the queue when multiple queues at the
same level are vying for available port bandwidth.
The port egress rate determines the outgoing traffic rate at a given port.

Table 43: Scheduling Order when Multiple SAPs Configured on a Port

belowCIRpass
aboveCIRpass
Page 360

Figure 6: Network Port Egress Scheduling

Queue level
Port egress rate or line rate level
Pass
The cir-level applies across all SAPs, that is, the cir-
level "8" queues of all SAPs are scheduled before cir-
level "7" queues of all SAPs, and so on.
The pir-level applies across all SAPs, that is, pir-level
"4" queues of all SAPs are scheduled before pir-level
"3" queues of all SAPs, and so on.
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
Scheduling Order