Cisco Cisco Gigabit Ethernet Switch Module (CGESM) for HP Technical References

Page of 742
   
2-483
Cisco Gigabit Ethernet Switch Module for the HP p-Class BladeSystem Command Reference Guide
380265-002
Chapter  2      CGESM Switch Cisco IOS Commands
srr-queue bandwidth share
srr-queue bandwidth share
Use the srr-queue bandwidth share interface configuration command switch to assign the shared 
weights and to enable bandwidth sharing on the four egress queues mapped to a port. The ratio of the 
weights is the ratio of frequency in which the shaped round robin (SRR) scheduler dequeues packets 
from each queue. Use the no form of this command to return to the default setting.
srr-queue bandwidth share weight1 weight2 weight3 weight4
no srr-queue bandwidth share 
Syntax Description
Defaults
Weight1, weight2, weight3, and weight4 are 25 (1/4 of the bandwidth is allocated to each queue).
Command Modes
Interface configuration
Command History
Usage Guidelines
The absolute value of each weight is meaningless, and only the ratio of parameters is used.
In shared mode, the queues share the bandwidth among them according to the configured weights. The 
bandwidth is guaranteed at this level but not limited to it. For example, if a queue empties and does not 
require a share of the link, the remaining queues can expand into the unused bandwidth and share it 
among themselves.
If you configure a shaped queue weight to 0 by using the srr-queue bandwidth shape interface 
configuration command, this queue participates in SRR shared mode. The weight specified with the 
srr-queue bandwidth shape command is ignored, and the weights specified with the srr-queue 
bandwidth share
 interface configuration command for a queue take effect.
When configuring queues for the same port for both shaping and sharing, make sure that you configure 
the lowest numbered queue for shaping.
Note
The egress queue default settings are suitable for most situations. You should change them only when 
you have a thorough understanding of the egress queues and if these settings do not meet your QoS 
solution.
weight1 weight2 
weight3 weight4
The ratios of weight1weight2weight3, and weight4 specify the ratio of the 
frequency in which the SRR scheduler dequeues packets. Separate each value 
with a space. The range is 1 to 255.
Release
Modification
12.2(25)SE1
This command was introduced.