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Home~LT~TitelW aYxV4B1ZMulticast operation questions Home~LT~Titel<( (@'+'DrOb]SVDrW :aXIc]SDUDQ (Home~LT~Gliederung 1W :aXIyxV4B1\Z+How do routers route/forward these packets?Home~LT~Gliederung 1g* <( (@'$++/How do interested receivers learn about groups?Home~LT~Gliederung 1g* <( (@'$//%How do hosts join (and leave) groups?Home~LT~Gliederung 1g* <( (@'$%%*What would be the MAC destination address?Home~LT~Gliederung 1g* <( (@'$**$What about security and reliability?Home~LT~Gliederung 1g* <( (@'$$$DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0 DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgJoeM$mVTDrML8DrMD,DrObwSVDrW a@c]SDUDQ ! Home~LT~TitelW a@xV4B1ZIP multicast addressing Home~LT~Titel<( (@'+'DrObSVDrW )aWIc]SDUDQ (Home~LT~Gliederung 1W )aWIxV4B1Z&224.0.0.0/4 (first 4 bits always 1110)Home~LT~Gliederung 1g* <( (@'$&&.Registered, reserved and special use addressesHome~LT~Gliederung 1g* <( (@'$..e.g. 224.0.0.0/24 link localHome~LT~Gliederung 2g* <( (@''233.0.0.0/8 GLOP addressesHome~LT~Gliederung 2g* <( (@''(IP to Ethernet MAC layer address mappingHome~LT~Gliederung 1g* <( (@'$((,IANA OUI = 00:00:5e (01:00:5e for multicast)Home~LT~Gliederung 2g* <( (@'',,,Map 23 low order IP bits to last 23 MAC bitsHome~LT~Gliederung 2g* <( (@'',,,Yes, there is a mismatch (overlap of groups)Home~LT~Gliederung 2g* <( (@'',,DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0 DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgkJoeM$mVTDrML8DrMD,DrObSVDrs !cc]SDUDQ !  Home~LT~Titels !cxV4B1Z)Internet group management protocol (IGMP) Home~LT~Titel<( (@'+'))))DrObSVDr ya,Jc]SDUDQ (Home~LT~Gliederung 18 ya,JxV4B1Z-Host to router link layer signalling protocolHome~LT~Gliederung 1g* <( (@'$--0Hosts issue join/leave to signal interest or notHome~LT~Gliederung 1g* <( (@'$00*Routers use IGMP to build forwarding stateHome~LT~Gliederung 1g* <( (@'$***IGMPv1 - 1st generation, joins and queriesHome~LT~Gliederung 1g* <( (@'$** /IGMPv2 hosts can send explicit leave messagesHome~LT~Gliederung 1g* <( (@'$//*IGMPv3 hosts selectively specify sourcesHome~LT~Gliederung 1g* <( (@'$**,Required for source-specific multicast (SSM)Home~LT~Gliederung 2g* <( (@'',,!IGMPv3 not widely implemented yetHome~LT~Gliederung 2g* <( (@''!!DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0 DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPg-JoeM$mVTDrML8DrMD,DrObrSVDrn  ac]SDUDQ ! Home~LT~Titeln  axV4B1ZIGMP packet format Home~LT~Titel<( (@'+'DrObeSVDrj\P):c]SDUDQ  Defaultj\P):oNAT5 QGIF87ar$$$IIImmm,rxz#0)E8kX'[(K@Tvΐk(AMo@ rASMh}hSFktj]Hj7p2wrMtjgNsmDj7[ US% (ted30xĵ~<&&~~Gpɋz.p‡=U0m%R$$汤.L h01)l&'B`s0~4(LjvQZK*SO!u4i T:Q('CuCVfRQD[ *l&4-Vn*Ki dOYI %KMڡ; A@ \["R -M}B)[\]HS0!Ux׬Wɢ*bU B~J`Iz 1p JNsؘwY!Bb\Ȃhr4X#]| zϱR^l)w,qM  X xC(y҂ф2X)\y6x;%$Ea>#dX]}E E;)Y 6iu4IۢeKTMxmG4H* T(cْGN/#7IrBB4jٗQ@G\@'i\THg4@ YTlT$(q?+l/$p#1 tB편NV ܬ];6RbQL;DrObSVDr2HOGFc]SDUDQ  Default2HOGFNAT5 GIF87a7$$$IIImmm,7Xt0I"rQN4a@ Γ x*t?!+ G h, C pO$ VxLZKrJ6tD=+v8{H"og'}`Sc#r"8## M^FD w-1OiٿSeFE  VAXg=bxaĝSe$5' Df)P, LLP$;2d#S 2H`B :CaDyRzT%% بtimҨ `mrU2t%@QPTGuuI%RCoE)_L?3֢-"q@F7Q"b68BAoVCčkȏl*eB*kJqK N20u2ܤ58 L-B@=kfd/WEFۅbML4褄w%@Qc K4H Rw) =Xa\N':!Y%ky܊*6DVagYHDp%U\AL'}9Uc%4SKפ*0MU!HzޅG\yʥdBr2t'p@Fh N2al%s|&hi(GYFZ/חS("ʭ&`'փ :TC!I2%`'Q&PJkV0j*ZnE.XkG inYnkoҫ/iɛ[;0 '3{ZqsTwܱsx,$lW+D0|2 q3r<{MB=^F'բ*43H?-5C=վu}L[OS\6Oh"U}? 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Home~LT~Titeln  axV4B1ZMulticast routing Home~LT~Titel<( (@'+'DrOb0SVDrW aIc]SDUDQ ( Home~LT~Gliederung 1kW aIL xV4B1'Z #Broadcast and prune (DVMRP, PIM-DM)Home~LT~Gliederung 1g* <( (@'$##Reverse shortest path treeHome~LT~Gliederung 2g* <( (@''.Routers do reverse path forwarding (RPF) checkHome~LT~Gliederung 2g* <( (@''..Explicit join (CBT, PIM-SM)Home~LT~Gliederung 1g* <( (@'$,Receivers send join to rendezvous point (RP)Home~LT~Gliederung 2g* <( (@'',,.Senders send multicast data to RP, up the treeHome~LT~Gliederung 2g* <( (@''..0RP fans out multicast data (its a meeting point)Home~LT~Gliederung 2g* <( (@''00+Optimizations in PIM-SM to short-cut the RPHome~LT~Gliederung 2g* <( (@''++'Shared tree versus source specific treeHome~LT~Gliederung 3g* <( (@'*''DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgJoeM$mVTDrML8DrMD,DrObSVDrn  ac]SDUDQ !  Home~LT~Titeln  axV4B1Z2Distance vector multicast routing protocol (DVMRP) Home~LT~Titel<( (@'+'2222DrObSVDrW aIc]SDUDQ ( Home~LT~Gliederung 1W aIxV4B1ZSimilar to RIPHome~LT~Gliederung 1g* <( (@'$Infinity = 32 hopsHome~LT~Gliederung 1g* <( (@'$/Flood everywhere first, prune back if necessaryHome~LT~Gliederung 1g* <( (@'$//2Graft back leaf nodes if necessary, requires stateHome~LT~Gliederung 1g* <( (@'$22+1st generation multicast/MBONE deprecatedHome~LT~Gliederung 1g* <( (@'$++"Relatively poor scaling propertiesHome~LT~Gliederung 1g* <( (@'$""PIM-DM is similarHome~LT~Gliederung 1g* <( (@'$,Useful for dense population of group membersHome~LT~Gliederung 1g* <( (@'$,,DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgHJoeM$mVTDrML8DrMD,DrObSVDrn  ac]SDUDQ !  Home~LT~Titeln  axV4B1Z5Protocol independent multicast sparse mode (PIM-SM) Home~LT~Titel<( (@'+'5555DrObPSVDrW aIc]SDUDQ ( Home~LT~Gliederung 1W aIlxV4B1KZ+Underlying unicast routing protocol is usedHome~LT~Gliederung 1g* <( (@'$++2Receivers must explictly join groups (no flooding)Home~LT~Gliederung 1g* <( (@'$22)Everyone meets at a rendezvous point (RP)Home~LT~Gliederung 1g* <( (@'$))(RP is the core of a uni-directional treeHome~LT~Gliederung 2g* <( (@''((-First hop routers encapsulate multicast to RPHome~LT~Gliederung 2g* <( (@''---RP can join source to the tree to avoid encapHome~LT~Gliederung 2g* <( (@''--State and reliability issuesHome~LT~Gliederung 1g* <( (@'$DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgOfOJoeM$mVTDrML8DrMD,DrObrSVDrn  ac]SDUDQ ! 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Home~LT~Titeln  axV4B1ZMulti-protocol BGP (MBGP) Home~LT~Titel<( (@'+'DrObSVDrW aIc]SDUDQ ( Home~LT~Gliederung 14W aIxV4B1Z3BGP extension to carry other routes (e.g multicast)Home~LT~Gliederung 1g* <( (@'$33)Provides for route aggregation and policyHome~LT~Gliederung 1g* <( (@'$))Used between ASesHome~LT~Gliederung 1g* <( (@'$2Carries information about the sources of multicastHome~LT~Gliederung 1g* <( (@'$22DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPg#JoeM$mVTDrML8DrMD,DrObSVDrn  ac]SDUDQ !  Home~LT~Titeln  axV4B1Z*Multicast source discovery protocol (MSDP) Home~LT~Titel<( (@'+'****DrObSVDrW aIc]SDUDQ ( Home~LT~Gliederung 1W aIxV4B1Z2A way for receivers to discover groups and sourcesHome~LT~Gliederung 1g* <( (@'$22 Connects PIM-SM domains togetherHome~LT~Gliederung 1g* <( (@'$  %MSDP peering routers exchange SA infoHome~LT~Gliederung 1g* <( (@'$%%*Source advertisements announced by sendersHome~LT~Gliederung 2g* <( (@''**&MSDP messages are flooded to all peersHome~LT~Gliederung 1g* <( (@'$&&State and flooding issuesHome~LT~Gliederung 1g* <( (@'$(Widely considered to be a temporary hackHome~LT~Gliederung 1g* <( (@'$(( ...but nothing better exists yetHome~LT~Gliederung 2g* <( (@''  DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrPgEJoeM$mVTDrML8DrMD,DrObuSVDrn  ac]SDUDQ ! Home~LT~Titeln  axV4B1ZInternet IP multicast Home~LT~Titel<( (@'+'DrObSVDrW aIc]SDUDQ ( Home~LT~Gliederung 1&W aIxV4B1Z%From DVMRP MBONE to today's protocolsHome~LT~Gliederung 1g* <( (@'$%%-Widely deployed on Internet2 and intra-domainHome~LT~Gliederung 1g* <( (@'$--'IGMPv2/PIM-SM/MBGP/MSDP widely deployedHome~LT~Gliederung 1g* <( (@'$''*SSM addresses some scaling/security issuesHome~LT~Gliederung 1g* <( (@'$**.DoS and state attacks still a significant riskHome~LT~Gliederung 1g* <( (@'$..&Common tools and applications deployedHome~LT~Gliederung 1g* <( (@'$&&+IP/TV, sdr, mtrace, beacons, NUTV, on-the-iHome~LT~Gliederung 2g* <( (@''+++University of Oregon has a lot of expertiseHome~LT~Gliederung 1g* <( (@'$++DrXXgg NHome~LT~GliederungDrPgmJoeMVT$mDrML8DrMD,DrOb<SVDr&5 B0DrObPSVDr 3CG]c]SDUDQ # Home~LT~Notizen 3CG]qxV4B1\ZClick to add notesHome~LT~Notizen<( (@''DrXXgg JHome~LT~GliederungDrXXGeneric PrinterSGENPRT`TlJobData 1 printer=Generic Printer orientation=Landscape copies=1 scale=1 margindajustment=-1,-1,-1,-1 colordepth=24 pslevel=0 colordevice=0 PPDContexData PageSize:LetterPHLALA0 MA MAhB@8MAhB@0yKXhB@,LhB@hB@0yKhB@,LhB@hB@@,LHMAMA A AA DrVwV SVDr SVDr:SVDr{{SVDrA LAYER_LAYOUT:SVDr{{SVDr#SVDr SVDr# SVDr0 SVDr1 SVDr3 SVDr4SVDr@SVDr SVDrD SVDrP SVDrQ DrHL DrHL DrHL Xp|\ Root Entry!r\V)䰱CompObjEOle persist elements" SfxDocumentInfo uBasicManager2 4StarBASICSfxWindowsStandardJSfxStyleSheets3rSummaryInformation( (StarDrawDocument3$A