Quality of Service (QoS) Commands | 373CommandHistoryRelatedCommandsbuffer packets interfaceThis command sets packet limits per-port/per-queue on ports 1 – 48 and the stack port on the S50, ports1 – 52 and the stack port on the S50V, and ports 1 – 28 on the S25P.Syntax [no] buffer packets interface {unit/slot/port | system-uplink | system-downlink}Queue-0_buffer Queue-1_buffer Queue-2_buffer Queue-3_buffer Queue-4_bufferQueue-5_buffer Queue-6_bufferTo return buffers to their default values, use the no buffer packets interface unit/slot/port, nobuffer packets system-uplink, or no buffer packets system-downlink command syntax,depending on the target port.ParametersDefaults Equal allocation per queueMode Global ConfigCommandHistoryVersion 2.5.1 Introducedbuffer check Verify that the configured buffer allocations meet the hardware requirements.buffer dynamic (1G and stackports)Set dynamic buffer sizes per port for ports 1 – 48 and the stack port on the S50,and ports 1 – 52 and the stack port on the S50V.buffer dedicated interface(10G ports)Set buffer sizes per port and per queue for ASICs controlling the optional 10GBports 49 and 50 on the S50 and the 10Gb ports on the S25P.show buffer unit Display configured values for dedicated buffers, dynamic buffers, and packetlimits for each port in an S50, S50V, or S25P, as well as the actual settingsfrom the switch hardware.show buffer allocationinterfaceDisplay configured and actual static buffer allocation and packet allocationvalues per queue for the selected port in an S50, S50V, or S25P.unit/slot/port Enter the port that you want to configure, in unit/slot/port format.The possible ports vary by platform:• S50: The 1Gb ports — 1 – 48 (Use buffer dedicated interface (10G ports) forports 49 and 50.)• S50V: 1 – 52• S25P: 1 – 28system-uplink For the S50 and S50V only, enter the keyword system-uplink to configurethe stack ports of all stack members.system-downlink For the S50 only, enter the keyword system-downlink to configure theoutput from the switch fabric buffer.Queue-0_bufferQueue-1_buffer......Queue-6_bufferFor each of the seven queues, in sequence, enter a number indicating its desiredbuffer size, in 1KB increments (for example, 100 for 100KB).All S50, S50V, and S25P queues have a 2047 packet limit. The total number ofpackets cannot exceed 2047 per port. It is possible to reduce the packet limit ofQueue 7 to 0 by allocating the total of 2047 packets to the other queues.Version 2.5.1 Introduced
