How much presentage of the bandwidth does EIGRP uses for it self. And what exactly does that mean. For instance this bandwidth is reserved only for EIGRP's message and cannot be use for data or something else.
And also if we use redistibution with specific metrics and we also put the bandwidth over each interface , which of both will EIGRP will use for metric. The interface bandwidth or the metric for redistribution.
By default EIGRP will not use more than 50% of the interface bandwidth. This is the configured bandwidth over that interface.
In a stable network you would not see anything except EIGRP hellos and hence will not utilize much bandwidth and will be available for other traffic.
EIGRP requires that you mention the metrics during redistribution and hence the mentioned value is taken. However when you redistribute static routes it is not mandatory to define metrics. If not defined, it takes the interface metrics