![Alcatel-Lucent OmniAccess 700 Скачать руководство пользователя страница 966](http://html.mh-extra.com/html/alcatel-lucent/omniaccess-700/omniaccess-700_cli-configuration-manual_2891856966.webp)
Quality of Service
Left running head:
Chapter name (automatic)
940
Beta
Beta
CLI Configuration Guide
Alcatel-Lucent
T
O
C
ONFIGURE
R
ANDOM
D
ETECT
•
RED (Random Early Detection)
RED is designed for a network where a single marked or dropped packet is
sufficient to signal the presence of congestion to the transport layer protocol.
It aims to control the average queue size by indicating to the end hosts when
they should temporarily slow down transmission of packets. RED congestion
control mechanisms monitor the average queue size for each output queue
and using randomization, choose connections to notify of that connection.
RED actually takes advantage of the congestion control mechanism of TCP,
packets are randomly dropped prior to periods of congestion. This causes
RED to inform the packet source to decrease its transmission rate.
•
WRED (Weighted Random Early Detection)
WRED combines the capabilities of the RED algorithm with the IP precedence
feature to provide preferential traffic handling of higher priority packets. It can
selectively discard lower priority traffic when the interface begins to get
congested and provide differentiated performance characteristics for different
classes of service.
WRED can also be configured to ignore the IP precedence when making drop
decisions so that non weighted RED behavior is achieved. WRED can provide
separate thresholds and weights for different IP precedences, which can
provide different quality of service with regard to packet dropping for different
packet types.
Command (in Class Mode)
Description
random-detect
This command enables RED.
random-detect
ip-dscp
This command enables ip-dscp based
WRED, with the default values.
random-detect
ip-precedence
This command enables ip-precedence
based WRED, with the default values.
random-detect
ip-dscp
<0-63>
min-thresh <50-750> max-thresh
<150-950>
Use this command to change the
default ip-dscp based WRED values.
This command populates the WRED
values but does not enable the
features. To enable this, use ‘random-
detect ip-dscp’ command.
Note:
The queue limit of the
traffic class should be
greater than the max
threshold value. And, for
optimal results, difference
between the two values
should be minimum 10.
Содержание OmniAccess 700
Страница 38: ...Left running head Chapter name automatic 12 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 176: ...Left running head Chapter name automatic 150 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 224: ...Per VLAN Spanning Tree Left running head Chapter name automatic 198 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 258: ...Port Monitoring Left running head Chapter name automatic 232 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 260: ...Left running head Chapter name automatic 234 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 296: ...T1E1 Line Card Left running head Chapter name automatic 270 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 360: ...Point to Point Protocol Left running head Chapter name automatic 334 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 434: ...Left running head Chapter name automatic 408 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 462: ...Common Classifiers Left running head Chapter name automatic 436 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 464: ...Left running head Chapter name automatic 438 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 534: ...Border Gateway Protocol Left running head Chapter name automatic 508 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 638: ...Left running head Chapter name automatic 612 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 762: ...Filter and Firewall Left running head Chapter name automatic 736 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 890: ...Transparent Firewall Left running head Chapter name automatic 864 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 940: ...Left running head Chapter name automatic 914 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1000: ...Quality of Service Left running head Chapter name automatic 974 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1002: ...Left running head Chapter name automatic 976 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1044: ...DNS Domain Name Service Client Left running head Chapter name automatic 1018 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1046: ...Left running head Chapter name automatic 1020 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1058: ...Left running head Chapter name automatic 1032 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1074: ...Lifeline Left running head Chapter name automatic 1048 Beta Beta CLI Configuration Guide Alcatel Lucent line con 0 end ...
Страница 1076: ...Left running head Chapter name automatic 1050 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1118: ...Web Cache Server Left running head Chapter name automatic 1092 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1120: ...Left running head Chapter name automatic 2 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1140: ...QoS Values and Mnemonics Left running head Chapter name automatic 22 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1156: ...IPsec Interoperability of OA 700 Left running head Chapter name automatic 38 Beta Beta CLI Configuration Guide Alcatel Lucent ...