nerdexam
Cisco

300-320 · Question #615

Which two characteristics of MSDP when designing an interdomain multicast network are true? (Choose two.)

The correct answer is A. MSDP is a mechanism that allows RPs to share information about active sources. C. In the PIM-SM model, multicast sources and receivers must register with their local RP. MSDP enables interdomain multicast by allowing RPs in different PIM-SM domains to share information about active multicast sources, with receivers in each domain registering with their local RP.

Advanced Addressing and Routing Solutions

Question

Which two characteristics of MSDP when designing an interdomain multicast network are true? (Choose two.)

Options

  • AMSDP is a mechanism that allows RPs to share information about active sources.
  • BAny network utilizing iBGP or eBGP can use MSDP
  • CIn the PIM-SM model, multicast sources and receivers must register with their local RP
  • DRPs in other domains have full knowledge of sources located in other domains
  • EThe MSDP speaker periodically sends SAs that include all sources in all discovered domains.

How the community answered

(44 responses)
  • A
    57% (25)
  • B
    25% (11)
  • D
    5% (2)
  • E
    14% (6)

Why each option

MSDP enables interdomain multicast by allowing RPs in different PIM-SM domains to share information about active multicast sources, with receivers in each domain registering with their local RP.

AMSDP is a mechanism that allows RPs to share information about active sources.Correct

MSDP's core function is Source Active (SA) message exchange between RPs, allowing an RP in one domain to learn about active sources in another domain so local receivers can join those multicast groups.

BAny network utilizing iBGP or eBGP can use MSDP

MSDP requires eBGP between domains for RPF checking of SA messages; networks using only iBGP within a single AS cannot leverage MSDP for interdomain purposes.

CIn the PIM-SM model, multicast sources and receivers must register with their local RPCorrect

PIM-SM requires multicast sources to register with their local RP and receivers to send Join messages toward their local RP, making the RP the central control point in each domain.

DRPs in other domains have full knowledge of sources located in other domains

RPs in remote domains only learn about sources via SA messages from peer RPs and do not have full, complete knowledge of all sources across all domains simultaneously.

EThe MSDP speaker periodically sends SAs that include all sources in all discovered domains.

SA messages are generated only for active sources discovered within the local domain of the originating MSDP speaker, not for sources in all discovered domains.

Concept tested: MSDP interdomain multicast Source Active message exchange

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-16/imc-pim-xe-16-book/imc-msdp.html

Topics

#MSDP#interdomain multicast#PIM-SM#rendezvous point

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full 300-320 Practice