Install Guide

!
class-map match-any dscp-pfc-2
match ip dscp 20-25,30-35
2. Associate above class-maps to Queues Queue assignment as below.
Table 19. Queue Assignments
Internal-priority Queue
0 0
1 0
2 0
3 1
4 2
5 3
6 3
7 3
3. Dot1p->Queue Mapping Configuration is retained at the default value.
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.
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.
dellNetFpStatsPe
rPgTable
This table fetches the Allocated Min cells, Shared cells, and Headroom cells per Priority Group, the mode
in which the buffer cells are allocated — Static or Dynamic and the Used Min Cells, Shared cells and
Headroom cells per Priority Group. The table fetches a value of 0 if the mode of allocation is Static and
Data Center Bridging (DCB) 223