Quick Reference Guide

372 | Quality of Service (QoS) Commands
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buffer dynamic interface (S25P)
This command sets the dynamic buffer size for S25P ports.
Syntax
[no] buffer dynamic interface unit/slot/port buffer
To return buffers to their default values, use the no buffer dynamic interface unit/slot/port
command syntax.
Parameters
Defaults
257KB for SFP ports, 385k for stack and 10G ports; oversubscription ratio: eight times for SFP ports,
12 times for stack and 10G ports
Mode
Global Config
Command
History
Related
Commands
buffer dynamic interface system-downlink
This command sets the downlink buffer size for the S50 switch fabric.
Syntax
[no] buffer dynamic interface system-downlink Queue-1_buffer Queue-2_buffer
Queue-3_buffer Queue-4_buffer
Queue-5_buffer Queue-6_buffer
To return buffers to their default values, use the no buffer dynamic interface system-downlink
command.
Parameters
Defaults
Equal allocation per queue.
No static buffering on the switch fabric
Mode
Global Config
unit/slot/port buffer Enter the S25P port to configure (ports 1 – 28) in unit/slot/port format,
followed by a number indicating the desired dynamic buffer size, in 1KB
increments (for example, 100 for 100KB).
Range: 0–2013KB
Version 2.5.1 Introduced
buffer check Verify that the configured buffer allocations meet the hardware requirements.
buffer dedicated interface
(10G ports)
Set buffer sizes per port and per queue for ASICs controlling the optional 10GB
ports 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 packet
limits for
each port in an S50, S50V, or S25P, as well as the actual settings
from the switch hardware.
show buffer allocation
interface
Display configured and actual static buffer allocation and packet allocation
values per queue for the
selected port in an S50, S50V, or S25P.
Queue-1_buffer
Queue-2_buffer...
...Queue-6_buffer
For each of the six queues, in sequence, enter a number indicating its desired
buffer size, in 1KB increments (for example, 10 for 10KB).
Range: 0 – 128KB
128KB is available per interface.