Digisol DG-GS4826S Management Manual page 993

When a packet of size B bytes arrives at time t, the following happens if
trTCM is configured to operate in color-aware mode:
If the packet has been precolored as red or if Tp(t)-B < 0, the
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packet is red, else
if the packet has been precolored as yellow or if Tc(t)-B < 0, the
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packet is yellow and Tp is decremented by B, else
the packet is green and both Tp and Tc are decremented by B.
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The trTCM can be used to mark a IP packet stream in a service, where
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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
specify the previously defined "rd-class," uses the
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 ip dscp 3
Console(config-pmap-c)#police trtcm-color-blind 100000 4000 100000 6000
exceed-action 0 violate-action drop
Console(config-pmap-c)#
set
This command modifies the CoS, DSCP or IP Precedence value in a
matching packet (as specified by the
remove this traffic classification.
S
YNTAX
[no] set {cos new-cos | ip dscp new-dscp | ip precedence new-ip-
precedence}
new-cos - New Class of Service (CoS) value. (Range: 0-7)
new-dscp - New Differentiated Service Code Point (DSCP) value.
(Range: 0-63)
new-ip-precedence - New IP Precedence value. (Range: 0-7)
D S
EFAULT ETTING
None
C M
OMMAND ODE
Policy Map Class Configuration
C 41
HAPTER
match command). Use the no form to
– 993 –
| Quality of Service Commands
class command to
set command to classify