Switch Redundancy in the Backbone

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If a backbone switch crashes, it will cause many LAN segments to lose service, not just

a single department. Organizations consider a variety of levels of redundancy for Layer

3 switches, including the following.

  • Purchase of a separate, duplicate switch that can take over if one fails.

  •  Installation of redundant power supplies in the switch. (A power supply converts AC power to the low-voltage DC power required by computers.) Switches are inoperable if the power supply fails.

  • Installation of redundant CPUs within the switch.

  •  Installation of redundant blades in the switch.


  • x
  • convention:

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