Users Guide

2 Associate above class-maps to Queues Queue assignment as below.
Table 17. Queue Assignments
Internal-
priority
0 1 2 3 4 5 6 7
Queue 0 0 0 1 2 3 3 3
3 Dot1p->Queue Mapping Configuration is retained at the default value.
4 Interface Configurations on server connected ports.
a Enable DCB globally.
Dell(conf)#dcb enable
b Apply PFC Priority configuration. Configure priorities on which PFC is enabled.
Dell(conf-if-te-1/1/1)#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 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
dellNetFpEgrQBuff
SnapshotTable
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.
dellNetFpIngPgBuf
fSnapshotTable
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.
Data Center Bridging (DCB) 272