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JN0-281 · Question #34

You are creating an IP fabric underlay and want to use OSPF as your routing protocol. In this scenario, which statement is correct?

The correct answer is C. Interface speeds should be the same throughout the fabric to ensure that all links are utilized. When creating an IP fabric underlay using OSPF as the routing protocol, consistent interface speeds are important to ensure optimal traffic distribution and utilization of all links. OSPF and Interface Speeds: OSPF calculates the cost of a link based on its bandwidth. The…

Underlay Network

Question

You are creating an IP fabric underlay and want to use OSPF as your routing protocol. In this scenario, which statement is correct?

Options

  • AAll leaf devices must be configured in separate OSPF areas.
  • BAll leaf and spine devices must be the same model to ensure the proper load-balancing behavior.
  • CInterface speeds should be the same throughout the fabric to ensure that all links are utilized.
  • DAll spine devices must use the same router ID.

How the community answered

(49 responses)
  • A
    2% (1)
  • B
    6% (3)
  • C
    82% (40)
  • D
    10% (5)

Explanation

When creating an IP fabric underlay using OSPF as the routing protocol, consistent interface speeds are important to ensure optimal traffic distribution and utilization of all links. OSPF and Interface Speeds: OSPF calculates the cost of a link based on its bandwidth. The default cost calculation in OSPF If interface speeds vary significantly, OSPF may choose paths with lower cost (higher bandwidth), resulting in some links being underutilized. Equal Utilization: To ensure that all links are equally utilized in an IP fabric, it is recommended to maintain uniform interface speeds across the fabric. This ensures balanced load sharing across all available paths.

Topics

#IP fabric#OSPF#underlay#interface speed

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