300-170 · Question #152
You are implementing multicast routing between bridge domains for a client who is running ACI version 3.0 with Nexus ACI first-generation switches. What s required for multicast to operate ?
The correct answer is D. An external router to perform multicast routing between the bridge domains. To implement multicast routing between bridge domains in Cisco ACI version 3.0 with Nexus ACI first-generation switches, an external router is required.
Question
You are implementing multicast routing between bridge domains for a client who is running ACI version 3.0 with Nexus ACI first-generation switches. What s required for multicast to operate ?
Options
- APIM Any Source Multicast protocol
- BBootstrap router for RP to group mapping
- CPIM Source Specific Multicast protocol
- DAn external router to perform multicast routing between the bridge domains
How the community answered
(27 responses)- A4% (1)
- B4% (1)
- C7% (2)
- D85% (23)
Why each option
To implement multicast routing between bridge domains in Cisco ACI version 3.0 with Nexus ACI first-generation switches, an external router is required.
PIM Any Source Multicast (ASM) is a multicast protocol, but it is not natively supported for inter-bridge domain routing on first-generation ACI switches without an external router.
First-generation ACI switches do not support native PIM Any-Source Multicast (ASM) or Source-Specific Multicast (SSM) between bridge domains internally. Therefore, an external Layer 3 device capable of multicast routing must be deployed to handle multicast traffic forwarding and routing between different bridge domains within the ACI fabric.
Concept tested: ACI multicast routing limitations first-generation switches
Source: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739343.html
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