Configuration manual

Data Center Bridging (DCB)

Data center bridging (DCB) is supported on the platform.

NOTE:

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 support for Max Use Count mode in Buffer Statistics is introduced in Dell

Networking OS 9.3(0.). Max Use Count mode provides the maximum value of the counters accumulated

over a period of time. This feature is supported in Z9000.

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 introduced in Dell Networking

OS 9.3(0.1). 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 added in F10-FPSTATS MIB in Dell Networking OS 9.3(0.1):

• fpEgrQBuffSnapshotTable

• fpIngPgBuffSnapshotTable

• fpStatsPerPgTable

• pfcPerPrioTable

fpEgrQBuffSna

pshotTable

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.

fpIngPgBuffSna

pshotTable

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.

fpStatsPerPgTa

ble

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.

pfcPerPrioTabl

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.

Data Center Bridging (DCB)