Multicast tutorial PDF - Garr

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MBGP Overview•MBGP: Multiprotocol BGP(‏networks (multicast BGP in multicast(‏BGP Defined in RFC 2858 (extensions toCan carry different route types for different purposesUnicast<strong>Multicast</strong>Both route types carried in same BGP sessionDoes not propagate multicast state informationSame path selection and validation rulesAS-Path, LocalPref, MED, …66
MBGP Overview•New multiprotocol attributes:MP_REACH_NLRIUsed to advertise one or more routes to a peer that shares thesame path attributeMP_UNREACH_NLRIUsed to indicate a previously route is no longer reachable•They include the next information:(‏IPv4‎‏)‏ Address Family Information (AFI) = 1(‏unicast Sub-AFI = 1 (NLRI is used for(‏check Sub-AFI = 2 (NLRI is used for multicast RPFSub-AFI = 3 (NLRI is used for both unicast and multicast RPF(‏check•This information is used to build routing tables•Allows different policies and topologies between multicast and unicast67
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AgendaIntroductionMulticast address
Page 6:
A bit of historyIn 1995 the first m
Page 9 and 10:
The evolutionPIM Sparse mode(‏RP
Page 11 and 12:
PIM Dense Mode OverviewPruning Unwa
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(S,G) notation• For every multica
Page 15 and 16: Multicast Forwarding•Multicast Ro
Page 17 and 18: Multicast Forwarding•Multicast us
Page 19 and 20: Multicast Distribution TreesShortes
Page 21 and 22: Multicast Distribution Trees•Sour
Page 23 and 24: Multicast AddressingIP Multicast Gr
Page 25 and 26: Multicast AddressingGLOP addressesP
Page 27 and 28: •Introduction•Multicast address
Page 29 and 30: IGMPv2 Protocol Flow - Join a Group
Page 31 and 32: IGMPv2 Protocol Flow - Leave a Grou
Page 33 and 34: IGMP EnhancementsIGMP Version 2mult
Page 35 and 36: PIM-SMProtocol Independent Multicas
Page 37 and 38: PIM-SM Shared Tree JoinRP(*, G) Joi
Page 39 and 40: PIM-SM Sender RegistrationSourceRPT
Page 41 and 42: PIM-SM SPT SwitchoverSourceRPTraffi
Page 47 and 48: PIM-SSMNo shared treesNo register p
Page 49 and 50: PIM-SSMSourceRPData flows down the
Page 51 and 52: MSDPMulticast Source Discovery Prot
Page 53 and 54: MSDP Source Active MessagesInitial
Page 55 and 56: MSDP OverviewMSDP PeersDomain BRPDo
Page 57 and 58: MSDP Peers•MSDP establishes a nei
Page 59 and 60: MSDP with SSM - Unnecessary!ASM MSD
Page 61 and 62: MSDP Application: Anycast-RP•RFC
Page 63 and 64: Anycast-RPSrcRecRP1 - lo0X.X.X.X10.
Page 65: MBGP Overview•Multiprotocol Exten
Page 69 and 70: Summary•IGMP - Internet Group Man
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Multicast tutorial PDF - Garr

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