Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 724

value Enter a number in the range of 0 to 7 to denote the priority to be allocated to the dynamic buffer control mechanism buffer-size Ingress buffer size size Size of the ingress buffer in KB. Enter a number in the range of 0 to 7787. The default is 45 KB. pause-threshold Buffer limit for pause frames to be sent threshold-value Buffer limit at which the port sends the pause to peer in KB. Enter a number in the range of 0 to 7787. The default is 10 KB. resume-offset Buffer offset limit for resuming in KB threshold-value Buffer offset limit at which the port resumes the peer in KB. Enter a number in the range of 1 to 7787. The default is 10 KB. shared-threshold- Buffer shared threshold weight weight size Weightage of the priorities on the shared buffer size in the system. Enter a number in the range of 0 to 9. The default shared threshold weight is 10. Default The default size of the ingress buffer is 45 KB. The default buffer limit at which the port sends the pause to peer and recommences the sending of packets to the peer is 10 KB. The default threshold weight of the shared buffer space is 10. Command Modes DCB-BUFFER-THRESHOLD mode Command History Version Description 9.9(0.0) Introduced on the C9010. 9.7(0.1) Introduced on the S3048-ON and S4048-ON. 9.7(0.0) Introduced on the S6000-ON. 9.3(0.0) Introduced on the S4810, S4820T, and S6000 platforms. Usage Information For each priority, you can specify the shared buffer threshold limit, the ingress buffer size, buffer limit for pausing the acceptance of packets, and the buffer offset limit for resuming the acceptance of received packets. When PFC detects congestion on a queue for a specified priority, it sends a pause frame for the 802.1p priority traffic to the transmitting device. You can use the priority command to set up both the administrative and peerrelated PFC priorities. For example, you can configure the intended buffer configuration for all eight priorities. If you configure the number of lossless queues as 4 and if the administrator-configured priorities configured within the DCB input policy is applied, then the configuration for those priorities are pre-designed. However, if the peerprovided priorities are applied, although a DCB input policy is present, the peerprovided priorities become effective for buffer configuration. This method of Data Center Bridging (DCB) 724