ADTRANメーカーStub Routingの使用説明書/サービス説明書
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6120089 0L1-29. 3A Mar ch 2005 Configuration Guide IP Multicast S tub Routing in AOS Overview an d Examples fo r IP Multicast T echnology IP mu lticast provides an efficient me thod for d eliverin g common inform ation from a single source to multiple recipients with out unnecessary duplication and network resource was te.
IP Multicas t Overview IP Multicast Stub Rout ing in AOS 2 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A IP Mul ticast Over view IP multicast has many applications, ranging fr om video and/or au.
IP Mu ltic ast St ub Rou ting in AOS IP Mu ltic ast O verv iew 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 3 Figure 1. Non-Multicast Net work PCs 1, 2, 4, an d 6 have subscribed t o a specifi c media server co ntent which is deliver ed with a se parate u nicast stream for each subscribin g client PC.
IP Multicas t Overview IP Multicast Stub Rout ing in AOS 4 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A Satellite Classroom Application on a Multicast-Enabled Netwo rk In a multicast-enab led n.
IP Mu ltic ast St ub Rou ting in AOS IP Mu ltic ast O verv iew 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 5 Figure 2. Multicast- Enabled Network PCs 1, 2 , 4, and 6 have subscribed to a sp .
IP Multicas t Addressing and Protocol s IP Multicast St ub Routing in AOS 6 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A IP Multica st Addressi ng and Pr otocols Multicast Addressing The IP V4 add ress sc heme (l ayer 3) set s asi de C lass D a ddre sse s for us e in IP m ulti cast .
IP Multicas t Stub Routing in AOS IP Multicas t Addressing and Protocol s 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 7 routers (ultimately reach ing the router connected to the so urce of the multicast stream).
IP Multicast i n Stub Topol ogies IP Multicast Stub Rout ing in AOS 8 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A IP M ultica st in Stub T opol ogi es A stub network is a portion of a ne twork with a single connection to the remainder of the network.
IP Multicast Stub Rout ing in AOS IP Multic ast in Stub Topologies 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 9 to the multicast-enabled network (the backbone in Figur e 2) . The connection to the backbone is the stub router ’s upstream co nnection.
IP Multicast Stub Rout ing in the AOS IP Multicast Stub Rout ing in AOS 10 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A IP M ult ica st Stub R ou tin g in th e A OS In Release 7.1, AOS introduced IP multicast support in the f orm of IP Multicast Stu b Routing using IGMP Fo rwardi ng.
IP Multicast Stub Routi ng in AOS IP Multicast Stub Routing in the AOS 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 11 Helper Address T echn ical Note The helper address can b e any address on the path from th e desired upstre am interface to the multicast-source dev ice.
IP Multicast Stub Rout ing in the AOS IP Multicast Stub Rout ing in AOS 12 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A Figure 3. AOS M ult icast Stub and IGMP For warding Support.
IP Multicast Stub Rout ing in AOS Example Configur ation 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 13 Exa mple Con fig urat ion In the following exam ple, Router 1 is assumed to be a non-AOS product configured with an operating system common to other vendors, and the Stu b R out er is an AO S prod uct.
Key Differe nces in Multicast Stub Rout ing IP Multicast St ub Routing in AOS 14 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A Key Diff erences in Mult icast Stu b Routing The ke y differences b.
IP Multicas t Stub Routing in AOS Frequently Ask ed Que stions (FAQs) 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 15 Frequ ently Aske d Questi ons (F AQs) Q1: What multicas t appl ications does AOS support? A1: AOS 7.
Glossary IP Multicast Stub Rout ing in AOS 16 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A Glos sary Br oadcast : A transmission addressed to all receivers , usually contained within the given broadcast domai n. Br oadcast Do main : A laye r 2 domai n, sep arate d by lay er 3 d evices (route rs).
IP Mu ltic ast St ub Ro uting in AO S Glos sary 61200 890L1-2 9.3A Copyr ight © 2 005 ADT RAN, I nc. 17 Multicast : A transmis sion sent to a sp ecific set of receivers.
Glossary IP Multicast Stub Rout ing in AOS 18 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A.
デバイスADTRAN Stub Routingの購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
ADTRAN Stub Routing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ADTRAN Stub Routing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。ADTRAN Stub Routing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。ADTRAN Stub Routing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。
ADTRAN Stub Routing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ADTRAN Stub Routing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、ADTRAN Stub Routing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ADTRAN Stub Routing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。