Extreme Networks ExtremeWare XOS 11.1, Руководство пользователя

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Quality of Service
ExtremeWare XOS 11.1 Concepts Guide
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Using bi-directional rate shaping, excess traffic is discarded at the I/O module and does not traverse to
the backplane. You view statistics on the discarded traffic using the
show ports qosmonitor or show
ports information
command.
The 802.1p value is mapped to the ingress queue. For untagged ports, use port- or VLAN-based QoS to
map traffic to the ingress queue.
Bandwidth Settings
You apply ingress QoS profile (IQP or rate shaping) values on the BlackDiamond 10K switch as either a
percentage of bandwidth or as an absolute value in Kbps or Mbps. IQP bandwidth settings are in turn
applied to queues on physical ports. The impact of the bandwidth setting is determined by the port
speed (1 or 10 Gbps).
NOTE
You may see slightly different bandwidths because the switch supports granularity down to 62.5 Kbps.
Maximum Bandwidth Settings
The maximum bandwidth settings determine the port bandwidth available to each of the ingress port
queues.
Minimum Bandwidth Settings
The minimum bandwidth settings, or maximum committed rate settings, determine the port bandwidth
reserved for each of the ingress port queues.
Table 39 displays the maximum committed rates available for each port on each BlackDiamond 10K
switch I/O module.
Table 38: Ingress queue mapping for I/O modules on the BlackDiamond 10K switch
I/O module Ingress queues Priority value
1 Gbps module IQP1 1 to 4
IQP2 5 to 8
10 Gbps module IQP1 1
IQP2 2
IQP3 3
IQP4 4
IQP5 5
IQP6 6
IQP7 7
IQP8 8