Configuring user-defined classes
There are three user-defined classes: Level1, Level2, and Level3.
We do not have the option to create any more, but we can edit the ones that are there.
How to do it...
- Navigate to
Fabric|Access Policies|Global Policies|QOS Class Policies. - Select
Level1from the menu, or double-click on it in the workspace:
- Change the bandwidth allocation to 25%, and set the
CoSfield tocos 1. - Tick
PFC Admin State:
- Click on
Submit.
How it works...
Once we select a CoS marking, we must enable the PFC Admin State, which changes the congestion algorithm to No Drop. If we do no select the PFC Admin State, we will receive a warning when we click on Submit:
PFC stands for priority flow control: it prevents frame loss when there is congestion within the network and works on a per-CoS basis.
There's more...
Apart from the three user-defined classes, there are three reserved classes. The reserved classes are not configurable by the user, however.
The three reserved classes are:
- IFC
- Control...
