Which Layer 3 protocol is used within the ACI fabric?

The correct answer is D. IS-IS. As traffic enters the fabric, ACI encapsulates and applies policy to it, forwards it as needed across the fabric through a spine switch (maximum two-hops), and de-encapsulates it upon exiting the fabric. Within the fabric, ACI uses Intermediate System-to-Intermediate System…

Network Virtualization

Question

Options

AOpenFlow
BEIGRP
COSPF
DIS-IS

How the community answered

(38 responses)

A
3% (1)
B
8% (3)
C
3% (1)
D
87% (33)

Explanation

As traffic enters the fabric, ACI encapsulates and applies policy to it, forwards it as needed across the fabric through a spine switch (maximum two-hops), and de-encapsulates it upon exiting the fabric. Within the fabric, ACI uses Intermediate System-to-Intermediate System Protocol (IS-IS) and Council of Oracle Protocol (COOP) for all forwarding of endpoint to endpoint communications. This enables all ACI links to be active, equal cost multipath (ECMP) forwarding in the fabric, and fast-reconverging. For propagating routing information between software defined networks within the fabric and routers external to the fabric, ACI uses the Multiprotocol Border Gateway Protocol (MP-BGP).

Topics

#ACI fabric#IS-IS#Layer 3 routing#SDN

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