Allied TelesisメーカーSwitchblade AT-x900-12の使用説明書/サービス説明書
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AlliedW ar e Plus TM OS How T o | C613-16112-00 REV A www .alliedtelesis .com Intr oduction This document describe s some generic configur ation examples f or Quality of Ser vice (QoS) on the AlliedW ar e Plus OS. What information will y ou find in this document? This document pro vides information in the follo wing sections: • 1.
Page 2 | AlliedW ar e Plus™ OS How T o Note: QoS 1. Setting the eg ress rat e 1. Setting the egr ess rate Example 1-1: Setting the eg r ess limit of a switch p or t Commands: interface port1.0.24 egress-rate-limit 25m These commands will set t he egr ess limit of port 24 to 25Mbps.
Page 3 | AlliedW ar e Plus™ OS How T o Note: QoS 1. Setting the eg ress rat e Example 1-2: setting the maximum bandwidth limit per ingr ess port Ingress rate limiting cannot be configur ed on the por t per se , but is achiev ed by cr eating a QoS policy with a bandwidth limited traffic class, and applying that policy to each port.
Page 4 | AlliedW ar e Plus™ OS How T o Note: QoS 1. Setting the eg ress rat e Example 1-3: Setting the maximu m bandwidth limit f or each user In example 1-1, w e configured an egress rate on ports . But the granularity of that bandwid th limiting was multiples of 651kbps.
Page 5 | AlliedW ar e Plus™ OS How T o Note: QoS 1. Setting the eg ress rat e Example 1-4: Setting the maximum ba ndwidth limit f or each IP subnet This example is very similar to example 1-3, exce pt that it is assumed that a whole subnet is attached to each port, not just a single device on each port.
Page 6 | AlliedW ar e Plus™ OS How T o Note: QoS 1. Setting the eg ress rat e Example 1-5: Setting the maxi mum bandwidth limit of VLANs mls qos enable class-map cmap2 match vlan 2 class-map cmap3 m.
Page 7 | AlliedW ar e Plus™ OS How T o Note: QoS 2. Setting the priority on a pack et 2. Setting the priority on a pack et Example 2-1: Setting the La y er 2 (VLA N/802.1p) priority per ingress port Her e we assign differ ent 802.1p values to packets ar riving on differ ent ports.
Page 8 | AlliedW ar e Plus™ OS How T o Note: QoS 2. Setting the priority on a pack et Example 2-2: Setting the La y er 2 (VLAN/802.1p) priority per VLAN This set of commands will set the La yer 2 priority of VLAN2, VLAN3 and VLAN4 traffics pack ets, receiv ed on por ts 1 to 20, to 6, 5 and 4 r espectivel y .
Page 9 | AlliedW ar e Plus™ OS How T o Note: QoS 2. Setting the priority on a pack et Example 2-3: Setting the La y er 3 (T OS/DCSP) priority per ingr ess por t Use the same configuration pr ovided .
Page 10 | AlliedW are Plus™ OS How T o Note: QoS 3. Setting the egr ess queues 3. Setting the egr ess queues In this section we look at methods f o r dir ecting certain packets into certain queues on the egress port.
Page 11 | AlliedW are Plus™ OS How T o Note: QoS 3. Setting the egr ess queues Example 3-2: Setting th e egr ess queue according to the ingr ess por t This set of commands will set the egress queue of an y traffic r eceived fr om por t 1 to egress queue 6, fr om port 2 to egress queue 5 … etc.
Page 12 | AlliedW are Plus™ OS How T o Note: QoS 3. Setting the egr ess queues Example 3-3: Configuring WRR for egr ess queues This example is used for configuring WRR on egr e ss queues according to the ingr ess por t of the traffic.
Page 13 | AlliedW are Plus™ OS How T o Note: QoS Full QoS scenario - tiered services for a single customer Full QoS scenario - tier ed ser vices for a single customer In this section, we will build up a r elatively complex QoS configuration to support a scenario requiring quite pr ecise control ov er the traffic passing through the switch.
Page 14 | AlliedW are Plus™ OS How T o Note: QoS Full QoS scenario - tiered services for a single customer Identify the types of traffic The differ ent categories of traffic w ill be identified b y the DSCP values in the packets' headers. It is up to the customer to mark the pack ets with the appropriate DSCP values.
Page 15 | AlliedW are Plus™ OS How T o Note: QoS Full QoS scenario - tiered services for a single customer What is requir ed is that: • Gold traffic AL W A YS has pr ecedence over Silv er or Bronze traffic.
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Allied Telesis Switchblade AT-x900-12をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはAllied Telesis Switchblade AT-x900-12の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Allied Telesis Switchblade AT-x900-12の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Allied Telesis Switchblade AT-x900-12で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Allied Telesis Switchblade AT-x900-12を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はAllied Telesis Switchblade AT-x900-12の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Allied Telesis Switchblade AT-x900-12に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちAllied Telesis Switchblade AT-x900-12デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
