Users Guide

dot1p Value in
the Incoming
Frame
Priority Group Assignment
6 LAN
7 LAN
The following describes the priority group-bandwidth assignment.
Priority Group Bandwidth Assignment
IPC 5%
SAN 50%
LAN 45%
PFC and ETS Conguration Command Examples
The following examples show PFC and ETS conguration commands to manage your data center trac.
1 Enabling DCB
Dell(conf)#dcb enable
2 Congure DCB map and enable PFC, and ETS
Dell(conf)# service-class dynamic dot1p
Or
Dell(conf)# interface tengigabitethernet 1/1
Dell(conf-if-te-1/1)# service-class dynamic dot1p
3 Apply DCB map to relevant interface
dcb-map test
priority-group 1 bandwidth 50 pfc on
priority-group 2 bandwidth 45 pfc off
priority group 3 bandwidth 5 pfc on
priority-pgid 2 2 2 1 3 2 2 2
Example of Applying DCB Map to an Interface
Dell(conf)# int tengigabitethernet 1/1
Dell(conf-if-te-1/1)# dcb-map test
QoS dot1p Trac Classication and Queue
Assignment
The following section describes QoS dot1P trac classication and assignments.
DCB supports PFC, ETS, and DCBx to handle converged Ethernet trac that is assigned to an egress queue according to the following
QoS methods:
Honor dot1p
You can honor dot1p priorities in ingress trac at the port or global switch level (refer to Default dot1p to Queue
Mapping) using the service-class dynamic dot1p command in INTERFACE conguration mode.
Layer 2 class maps You can use dot1p priorities to classify trac in a class map and apply a service policy to an ingress port to map
trac to egress queues.
266 Data Center Bridging (DCB)