After I Run the display fib Command, What Does Flag Mean in the Command Output?
Currently, Flag can have the following values:
B: a blackhole route, that is, a route with the outbound interface NULL0.
D: a route generated by a dynamic routing protocol such as Intermediate System to Intermediate System routing protocol (IS-IS), open shortest path first (OSPF), Border Gateway Protocol (BGP), or Routing Information Protocol (RIP).
G: a gateway route, that is, a route with a gateway as the destination address.
H: a host route.
S: a static route, that is, a route configured using the ip route-static command or configured on the network management system (NMS).
U: a route that is reachable.