Which two overlay network design considerations must be made for a Cisco SD-Access network? (Choose two.)

The correct answer is C. Reduce subnets and simplify DHCP management E. Avoid overlapping IP subnets. For the SD-Access overlay, two critical design considerations are: (C) Reduce subnets and simplify DHCP management - SD-Access uses Virtual Networks (VNs) and macro-segmentation, allowing organizations to consolidate subnets and manage IP addressing more efficiently with larger…

Advanced Addressing and Routing Solutions

Question

Options

ALAN automation for deployment
BLayer 3 to the access design
CReduce subnets and simplify DHCP management
DDedicated IGP process for the fabric
EAvoid overlapping IP subnets

How the community answered

(55 responses)

A
5% (3)
B
11% (6)
C
80% (44)
D
4% (2)

Explanation

For the SD-Access overlay, two critical design considerations are: (C) Reduce subnets and simplify DHCP management - SD-Access uses Virtual Networks (VNs) and macro-segmentation, allowing organizations to consolidate subnets and manage IP addressing more efficiently with larger supernets, reducing DHCP scope complexity. (E) Avoid overlapping IP subnets - since SD-Access carries traffic from multiple VNs over a shared fabric underlay using VXLAN encapsulation, overlapping IP spaces within or across VNs would cause routing ambiguity and traffic black-holing in the overlay. The other options are incorrect for overlay design: LAN automation (A) and automated underlay (D, implied) pertain to underlay provisioning, not the overlay design. Layer 3 to the access (B) is a traditional campus design approach that SD-Access replaces rather than incorporates.

Topics

#SD-Access#Overlay Network Design#Virtual Networks (VNs)#IP Addressing

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