Dell S4048T-ON, Configuration Manual

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Field Description
Local DCBx Status: Protocol State Current operational state of DCBx protocol: ACK or IN-SYNC.
Peer DCBx Status: DCBx Operational Version DCBx version advertised in Control TLVs received from peer device.
Peer DCBx Status: DCBx Max Version Supported Highest DCBx version supported in Control TLVs received from
peer device.
Peer DCBx Status: Sequence Number Sequence number transmitted in Control TLVs received from peer
device.
Peer DCBx Status: Acknowledgment Number Acknowledgement number transmitted in Control TLVs received
from peer device.
Total DCBx Frames transmitted Number of DCBx frames sent from local port.
Total DCBx Frames received Number of DCBx frames received from remote peer port.
Total DCBx Frame errors Number of DCBx frames with errors received.
Total DCBx Frames unrecognized Number of unrecognizable DCBx frames received.
QoS dot1p Traffic Classification and Queue
Assignment
The following section describes QoS dot1P traffic classification and assignments.
DCB supports PFC, ETS, and DCBx to handle converged Ethernet traffic that is assigned to an egress queue according to the following
QoS methods:
Honor dot1p You can honor dot1p priorities in ingress traffic at the port or global switch level (refer to Default dot1p to Queue
Mapping) using the
service-class dynamic dot1p
command in INTERFACE configuration mode.
Layer 2 class maps You can use dot1p priorities to classify traffic in a class map and apply a service policy to an ingress port to map
traffic to egress queues.
NOTE: Dell Networking does not recommend mapping all ingress traffic to a single queue when using PFC and ETS. However,
Dell Networking does recommend using Ingress traffic classification using the
service-class dynamic dot1p
command
(honor dot1p) on all DCB-enabled interfaces. If you use L2 class maps to map dot1p priority traffic to egress queues, take into
account the default dot1p-queue assignments in the following table and the maximum number of two lossless queues supported
on a port (refer to
Configuring Lossless Queues ).
Although Dell Networking OS allows you to change the default dot1p priority-queue assignments (refer to Setting dot1p Priorities for
Incoming Traffic ), DCB policies applied to an interface may become invalid if you reconfigure dot1p-queue mapping. If the configured
DCB policy remains valid, the change in the dot1p-queue assignment is allowed.
NOTE: Although, each port on the S4810, S4820T, and S5000 devices support 8 QoS queues, you can configure only 4 QoS
queues (0-3) to manage data traffic. The remaining 4 queues (4-7) are reserved for control traffic.
dot1p Value in
the Incoming
Frame
Egress Queue Assignment
0 0
1 0
2 0
3 1
288 Data Center Bridging (DCB)