Quick Reference Guide

370 | Quality of Service (QoS) Commands
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Parameters
Defaults
Equal allocation per queue
Mode
Global Config
Command
History
Usage
Information
For example, to set the buffer to 20k in each buffer on port 1/0/1 in unit 1 in an S50 stack, the
command would be buffer dedicated interface 1/0/1 20 20 20 20 20 20 20.
There is no dynamic buffering on these ports.
Related
Commands
buffer dynamic (1G and stack ports)
This command sets 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.
Syntax
[no] buffer dynamic {interface unit/slot/port | system-uplink unit} buffer
interface unit/slot/port Enter the keyword interface followed by the port that you want to
configure, in unit/slot/port format.
The only ports that this command configures are ports 49 and 50 on the
S50. Use buffer dedicated (1G and stacking ports) for the other ports.
The possible ports vary by platform:
S50: The optional 10Gb ports — 49
and 50 (Use buffer dedicated (1G and
stacking ports) for ports 1 – 48.)
S25P: 1 through 25
Queue-0_buffer,
Queue-1_buffer...
...Queue-6_buffer
For each of the seven queues, in sequence, enter a number indicating its
desired buffer size, in 1KB increments (for example, 100 for 100KB).
Each queue can be assigned from 0KB to any portion of the remaining
total memory. Queue 7 is unavailable for buffer carving, inheriting any of
the total buffer size not allocated.
The total buffer size varies by platform:
• S50: 342KB
• S50V: 2013KB
Memory measurement is the total combined dedicated and dynamic
memory per 12-port group.
Version 2.5.1 Introduced
buffer check Verify that the configured buffer allocations meet the hardware requirements.
buffer dedicated (1G and
stacking ports)
Set buffer sizes per port and per queue for ports 1 – 48 and the stack port on the
S50, and ports 1 – 52 and the stack port on the S50V.
buffer dynamic (1G and
stack ports)
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.
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.