Supermicro SSE-G2252, Руководство пользователя

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Chapter 38: Quality of Service Commands
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the packet is green and both Tp and Tc are decremented by B.
•
The trTCM can be used to mark a IP packet stream in a service, where
different, decreasing levels of assurances (either absolute or relative)
are given to packets which are green, yellow, or red. Refer to RFC 2698
for more information on other aspects of trTCM.
E
XAMPLE
This example creates a policy called “rd-policy,” uses the class command to
specify the previously defined “rd-class,” uses the set phb command to
classify the service that incoming packets will receive, and then uses the
police trtcm-color-blind command to limit the average bandwidth to
100,000 Kbps, the committed burst rate to 4000 bytes, the peak
information rate to 1,000,000 kbps, the peak burst size to 6000, to remark
any packets exceeding the committed burst size, and to drop any packets
exceeding the peak information rate.
Console(config)#policy-map rd-policy
Console(config-pmap)#class rd-class
Console(config-pmap-c)#set phb 3
Console(config-pmap-c)#police trtcm-color-blind 100000 4000 1000000 6000
conform-action transmit exceed-action 0 violate-action drop
Console(config-pmap-c)#
set cos
This command modifies the class of service (CoS) value for a matching
packet (as specified by the match command) in the packet’s VLAN tag. Use
the no form to remove this setting.
S
YNTAX
[ no ] set cos cos-value
cos-value - Class of Service value. (Range: 0-7)
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
Policy Map Class Configuration
C
OMMAND
U
SAGE
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The set cos command is used to set the CoS value in the VLAN tag for
matching packets.
•
The set cos and set phb command function at the same level of
priority. Therefore setting either of these commands will overwrite any
action already configured by the other command.
E
XAMPLE
This example creates a policy called “rd-policy,” uses the class command to
specify the previously defined “rd-class,” uses the set cos command to
classify the service that incoming packets will receive, and then uses the