300-620 · Question #21
Which network protocol is used for Cisco ACI fabric data plane forwarding?
The correct answer is A. VXLAN. Cisco ACI utilizes VXLAN as the foundational data plane encapsulation protocol for forwarding traffic across the fabric, enabling scalable overlay networks. VXLAN encapsulates tenant traffic over the underlying IP transport network.
Question
Which network protocol is used for Cisco ACI fabric data plane forwarding?
Options
- AVXLAN
- BISIS
- CMP-BGP
- DFabricPath
How the community answered
(39 responses)- A92% (36)
- B3% (1)
- D5% (2)
Why each option
Cisco ACI utilizes VXLAN as the foundational data plane encapsulation protocol for forwarding traffic across the fabric, enabling scalable overlay networks. VXLAN encapsulates tenant traffic over the underlying IP transport network.
Cisco ACI uses VXLAN (Virtual Extensible LAN) as its data plane encapsulation protocol to forward tenant traffic across the fabric. VXLAN encapsulates original Ethernet frames into UDP packets, allowing logical networks (EPGs) to stretch across the underlying IP fabric and scale beyond traditional VLAN limits.
ISIS (Intermediate System to Intermediate System) is an interior gateway protocol used for routing in the underlay, not for data plane encapsulation.
MP-BGP (Multiprotocol BGP) is used as the control plane protocol for route distribution within the ACI fabric, specifically for host routes and bridge domain subnets, not for data plane forwarding encapsulation.
FabricPath is a Cisco proprietary Layer 2 multipathing technology used in traditional Nexus environments, but it is not the data plane forwarding protocol used in Cisco ACI.
Concept tested: ACI data plane encapsulation protocol
Source: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739487.html#_VMware_and_Microsoft_Hypervisors
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