Implementing Cisco Service Provider Advanced Routing Solutions (SPRI) — Question 16

Which two conditions must be met before separate ISPs can provide interdomain multicast routing? (Choose two.)

Answer options

• A. Each ISP must configure MSDP to connect its individual multicast administrative domain to the domains at other ISPs.
• B. Each ISP must dedicate a single router to handle multicast traffic between providers.
• C. Each ISP must replace its RP assignment with a global RP.
• D. Each ISP must configure its network to use PIM-DM.
• E. Each ISP must support intradomain multicast routing.

Correct answer: A, E

Explanation

Answer A is correct because configuring MSDP allows ISPs to share multicast information across different administrative domains. Answer E is also correct, as supporting intradomain multicast routing is essential for ISPs to manage multicast traffic before it can be routed between domains. The other options are not necessary for interdomain multicast routing, making them incorrect.