If there are multiple routes to the same destination with different metrics, the route with the lowest metric is the best route selected. Protocol: Shows how the route was learned. Flags: Describes the route with the following definitions — G The route uses a gateway ; U The interface to be used is up ; H Only a single host can be reached through the route. For example, this is the case for the loopback entry It is set if the table entry has been generated by a routing daemon like gated or by an ICMP redirect message ; M The route is set if the table entry was modified by an ICMP redirect message and!
The route is a reject route and datagrams will be dropped. Window: Indicates the maximum amount of data the system will accept in a single burst from a remote host when establishing TCP connections. A stub area is an OSPF area that does not enumerate external routes. Routing to AS external destinations in these areas is based only on a summary default route. This reduces the overhead for a stub area's internal routers. You cannot configure the backbone as a stub area.
A sample value for an X. The value set here is advertised as the link cost for this interface in the link state advertisement of the router. Faster interfaces usually have lower costs. The maximum setting is 32, All interfaces in the same area that are on the same network must use identical passwords.
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