300-420 · Question #350
Refer to the exhibit. A company specializing in VoD content creation has two offices in a separate multicast domain connected by a WAN link. BGP communication has been established between the…
The correct answer is C. MSDP. To deliver VoD content across two separate multicast domains connected by a WAN link with BGP, the network architect must design a solution for inter-domain multicast source discovery.
Question
Refer to the exhibit. A company specializing in VoD content creation has two offices in a separate multicast domain connected by a WAN link. BGP communication has been established between the offices. Clients are inside the LAN in each office. In AS5373, R2 has been selected as RP. What must the network architect design to deliver VoD content to clients in AS65773?
Exhibit
Options
- APIM SSM
- BPIM ASM with BSR
- CMSDP
- DPIM ASM with Auto-RP
How the community answered
(29 responses)- A10% (3)
- B3% (1)
- C83% (24)
- D3% (1)
Why each option
To deliver VoD content across two separate multicast domains connected by a WAN link with BGP, the network architect must design a solution for inter-domain multicast source discovery.
PIM Source Specific Multicast (SSM) operates within a single PIM domain and requires the receiver to know the source, not for inter-domain RP discovery.
PIM Any Source Multicast (ASM) with BSR (Bootstrap Router) is an intra-domain mechanism for RP discovery within a single PIM domain.
Multicast Source Discovery Protocol (MSDP) is specifically designed to allow Rendezvous Points (RPs) in different PIM-SM domains to discover active multicast sources in other domains. This enables multicast groups to span across different autonomous systems or distinct PIM-SM routing domains, fulfilling the requirement to deliver VoD content to clients in a separate AS.
PIM Any Source Multicast (ASM) with Auto-RP is an intra-domain mechanism for RP discovery within a single PIM domain.
Concept tested: Inter-domain multicast routing with MSDP
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/imc-pim-xe-3s-book/imc-msdp.html
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