Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

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Yellow packets when the average queue length is greater than 45 KB
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Green packets when the average queue length is greater than 90 KB
host1(config)# drop-profile colorblindRed
host1(config-drop-profile)# committed-threshold percent 30 90 5
host1(config-drop-profile)# exit
host1(config)# queue-profile colorSensitive
host1(config-queue)# committed-length 100000 100000
Related Topics
Configuring RED on page 27
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Dropping Behavior Overview on page 25
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RED and WRED Overview on page 26
Configuring WRED
The main difference between RED and WRED is that WRED deals with different
colored packets. The router assigns a color to each packet. Committed means green,
conformed means yellow, and exceeded means red.
Each line module supports a default drop profile and 15 configurable drop profiles.
WRED is not supported on the ES2 10G Uplink LM. On the ES2 10G LM, you must
configure WRED in one of the 15 configurable drop profiles; you cannot configure
its default drop profile.
To enable support for 32,000 subscribers with 128,000 QoS queues on ES2 10G ADV
LMs, scheduler memory enhancements have reduced the number of QoS rate counters
that are supported per egress queue rom 7 to 5:
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1 is used for forwarding events
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3 are used for tail dropping behavior
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1 is used for WRED functionality (an aggregate of all colors)
Each line module supports a default drop profile and 15 configurable drop profiles.
On the ES2 10G ADV LM, you must configure WRED in one of the 15 configurable
drop profiles; you cannot configure its default drop profile. Queue rate statistics
measure the forwarding and drop rates of each queue in bits per second. Queue
event statistics configure the E Series router to count the number of times that
forwarding or drop rates exceed a specific threshold. To display information about
the number of committed packets and bytes dropped by WRED for ES2 10G ADV
LMs, see the number displayed in the Dropped by WRED committed field in the
output of the
show ip interface command. The Dropped by WRED confirmed and
Dropped by WRED exceeded fields always display a value of zero because of the
single counter being used for WRED functionality being calculated and displayed in
the Dropped by WRED committed field of the output.
To configure WRED:
Configuring WRED
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Chapter 4: Configuring Dropping Behavior with RED and WRED