In a link-state routing protocol, what is the main reason for assigning a distinct numerical ID to each device?
To determine interface priority in elections
To control how often routing updates are sent
To uniquely identify the router within the network
To set the cost of interfaces for path selection
Assigning a distinct numerical ID to each router allows the protocol to uniquely identify and differentiate routers within the network. This is crucial for establishing neighbor relationships and for certain protocol operations like election processes. The interface cost is used to calculate the best path but is unrelated to the router's numerical ID. The frequency of routing updates is determined by protocol timers, not by the router's identifier. Interface priorities are used in designated router elections but are separate from the router's unique ID.
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