Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 278
SNMP Support for PFC and Buffer Statistics Tracking, dot1p Value in, the Incoming, Frame
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For DCB to operate effectively, you can classify ingress traffic according to its dot1p priority so that it maps to different data queues. The dot1p-queue assignments used are shown in the following table. dot1p Value in Egress Queue Assignment the Incoming Frame 0 1 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 fpEgrQBuffSnapsh This table fetches the BST statistics at Egress Port with respect to the buffer used. otTable This table displays the Snapshot of the Buffer cells used by Unicast and Multicast Data and Control Queues. fpIngPgBuffSnapsh This table fetches the BST statistics at the Ingress Port with respect to the Shared otTable 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. 278 Data Center Bridging (DCB)
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