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ADTRAN Stub Routing manual

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Table of contents for the manual

  • Page 1

    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. It is most often associat[...]

  • Page 2

    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 audio program delivery , music-on-h old for an IP PBX, conferencin g applications, an d delivery of s oftwar e updates, da ta, or other information to m[...]

  • Page 3

    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.[...]

  • Page 4

    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 network, the media server sends specific content in a single stream to a s pecific multicast IP addres s, much like a lo cal broadcast TV station s end[...]

  • Page 5

    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 ecific media se rver conte nt which is deliver ed on a single m ulticast strea m and copie d once to e ach segmen t containing su bscribin g client PC[...]

  • Page 6

    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 . RFC 1 112 di scuss es mul ticas t addres sing i n deta il.[...]

  • Page 7

    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). Th i s a llows a distribution tree to be built fr om the source to all receivers , thus ensuring the following: • There is a p[...]

  • Page 8

    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. Th e spok es in a hub- and- spoke ne twork are a commo n form of stu b netwo rk, al though [...]

  • Page 9

    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. The c onnection to the class room LAN is the stu b router’s downstream co nnection. ?[...]

  • Page 10

    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. N ote the fol low ing key po ints fo r this rele ase: • [...]

  • Page 11

    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. The choice depends on several network desig n parameters such as: ?[...]

  • Page 12

    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[...]

  • Page 13

    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. T ho ugh not show n in F igure 3 o[...]

  • Page 14

    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 between AOS multicast stub routing and th at of some oth er common p roduct operating systems are as follows: • In AOS, th e multicast helper address[...]

  • Page 15

    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.x (and later ) supports local I P multicast (source and r eceivers attached to lo cal router interfaces) and IP m ultic ast[...]

  • Page 16

    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). A VLAN or LA N segm en ts connected layer 2 s[...]

  • Page 17

    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. Multicast Routing : T he ability to determ ine the p roper loop-fre e paths on which to forward multicast packets such that all subscribing listeners receive the stream withou t w[...]

  • Page 18

    Glossary IP Multicast Stub Rout ing in AOS 18 Copyr ight © 2005 ADTRA N, Inc. 61200 890L1-2 9.3A[...]