Link State Tracking is a feature (within Cisco Switches) that binds the link state of multiple interfaces. This provides the ability to “down” interfaces based upon the link state of upstream interfaces.<\/p>\n
The diagram below shows a simple of example of an scenario where link state tracking would be required. As you can see from the diagram if interface e0\/0 was to go down (on either switch) unless the corresponding e0\/1 link state was also changed to down, the server would continue to send traffic via the switch that has the downed upstream link.<\/p>\n
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