Connectivity Guide

Table Of Contents
Table 19. Queue Assignments
Internal-priority Queue
0 2
1 0
2 1
3 3
4 4
5 5
6 6
7 7
3. Dot1p->Queue Mapping Configuration is retained at the default value.
Default dot1p-queue mapping is,
DellEMC#show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue : 2 0 1 3 4 5 6 7
4. Interface Configurations on server connected ports.
a. Enable DCB globally.
DellEMC(conf)#dcb enable
b. Apply PFC Priority configuration. Configure priorities on which PFC is enabled.
DellEMC(conf-if-te-1/1)#pfc priority 1,2
SNMP Support for PFC and Buffer Statistics Tracking
Buffer Statistics Tracking (BST) feature provides a mechanism to aid in Resource Monitoring and Tuning of Buffer Allocation.
The Max Use Count mode provides the maximum value of the counters accumulated over a period of time.
Priority Flow Control (PFC) provides a link level flow control mechanism, which is controlled independently for each frame
priority. The goal of this mechanism is to ensure zero loss under congestion in DCB networks.
Dell EMC Networking OS provides SNMP support for monitoring PFC and BST counters, and statistics. The enhancement is
made on DELL-NETWORKING-FPSTATS-MIB with additional tables to display the PFC and BST counters and statistics.
The following tables are available in DELL-NETWORKING-FPSTATS-MIB:
dellNetFpEgrQBuffSnapshotTable
dellNetFpIngPgBuffSnapshotTable
dellNetFpStatsPerPgTable
dellNetPfcPerPrioTable
dellNetFpEgrQBu
ffSnapshotTable
This table fetches the BST statistics at Egress Port for the buffer used. This table displays the Snapshot
of the Buffer cells used by Unicast and Multicast Data and Control Queues.
dellNetFpIngPgB
uffSnapshotTabl
e
This table fetches the BST statistics at the Ingress Port for the Shared Cells, and the Headroom cells
used per Priority Group. The snapshot of the Ingress Shared cells used and the Ingress Headroom cells
used per Priority Group, when PFC is enabled, display in this table. This table lists the stack-unit index,
port number and the priority group number.
254 Data Center Bridging (DCB)