Administrator Guide

dot1p Value in
the Incoming
Frame
Egress Queue Assignment
1 0
2 2
3 3
4 4
5 5
6 6
7 7
Dell#show qos dot1p-queue-mapping
Dot1p Priority : 0 1 2 3 4 5 6 7
Queue : 1 0 2 3 4 5 6 7
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.
Max Use Count mode in Buffer Statistics is supported. 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.
The SNMP support for monitoring PFC and BST counters and statistics is supported. The enhancement is made on F10-
FPSTATS MIB with additional tables to display the PFC and BST counters and statistics.
The following new tables are supported in F10-FPSTATS MIB
● fpEgrQBuffSnapshotTable
● fpIngPgBuffSnapshotTable
● fpStatsPerPgTable
● pfcPerPrioTable
fpEgrQBuffSnaps
hotTable
This table fetches the BST statistics at Egress Port with respect to the buffer used. This table displays
the Snapshot of the Buffer cells used by Unicast and Multicast Data and Control Queues.
fpIngPgBuffSnap
shotTable
This table fetches the BST statistics at the Ingress Port with respect to 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, will be displayed in this table. This table is
indexed by stack-unit index, port number and the priority group number.
fpStatsPerPgTab
le
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 a
value of 1 if the mode of allocation is Dynamic. This table is indexed by stack-unit number, port number
and priority group number.
pfcPerPrioTable This table fetches the number of PFC frames transmitted (PFC Requests) and the number of PFC frames
received (PFC Indications) per priority on a per port basis. This table is indexed by the stack-unit index,
port number and priority.
250 Data Center Bridging (DCB)