300-610 DCID: Designing Cisco Data Center InfrastructureDemo

By Cisco · Question Mode

QuestionQ249

Network Design

An ISP is assessing options to deliver IP mobility between two hosting centers in separate cities, approximately 100 km apart. The ISP needs to enable Layer 2 host migration between the sites across a Layer 3 network for any customer VLAN. The solution must scale to 500 customers, with 100 VLANs assigned to each customer. Which technology must the ISP deploy?

  • A vPC
  • B LISP
  • C OTV
  • D VXLAN EVPN
Explanation

VXLAN EVPN extends Layer 2 segments across a Layer 3 underlay and uses EVPN to distribute endpoint reachability and support host mobility. Its 24-bit VNI namespace supports up to roughly 16 million segments, so it can accommodate the required 50,000 customer VLANs while preserving tenant segmentation.

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