7210 SAS-Dxp can use two slopes per queue. Using two WRED slopes per queue (port egress queues) allows differentiation of in-profile and out-of-profile TCP traffic flows. The slope is not enabled by default.
All non-TCP traffic is tail-dropped if the egress queues are full when the traffic is being enqueued.
The following table describes the WRED slope used for different traffic flows with two slopes per queue.
Slopes |
High-low slope option (Uses 2 WRED slopes per queue) |
|---|---|
SAP Ingress TCP/IP traffic (Number of VLAN tags <=2) |
High-priority or low-priority slope, based on packet profile |
SAP Ingress non-TCP traffic (Number of VLAN tags does not matter) |
Tail-drop |
SAP Ingress TCP/IP traffic (Number of VLAN tags>2) |
Tail-drop |