![]() With this type of configuration, a router performs Address Resolution Protocol (ARP) on the Ethernet for every destination the router finds through the default route because the router considers all these destinations to be directly connected to Ethernet 0. An example of such a static route is: ip route 0.0.0.0 0.0.0.0 Ethernet0. This configuration is not recommended because when the static route points to an interface and has no next hop information, the router considers each host within the range of the route to be directly connected through that interface. The route is inserted into the routing table only when the interface is active. If configured to point as a static route to an interface, do not specify the next hop IP address. Static Route to Interface without Next Hop IP Address Conventionsįor more information on document conventions, refer to Cisco Technical Tips Conventions. Note: An administrative distance of 255 is considered unreachable, and static routes with an administrative distance of 255 are never entered into the routing table. It is installed in the routing table only when the dynamically learned route disappears. To configure a static route that is overridden by an EIGRP route, specify an administrative distance that is greater than 170 for the static route.Ī static route with a high administrative distance is called a floating static route. ![]() For example, Enhanced Interior Gateway Routing Protocol (EIGRP) derived routes have a default administrative distance of 90 for internal routes, and 170 for external routes. When the administrative distance is increased to a value greater than the dynamic routing protocol, the static route can be a safety net when dynamic routing fails. Static routes are used for a variety of reasons and are often used when there is no dynamic route to the destination IP address, or to override the dynamically learned route.īy default, static routes have an administrative distance of one, which gives them precedence over routes from any dynamic routing protocol. ![]() If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions. There are no specific requirements for this document. This document describes static routes and uses a problem scenario to demonstrate when it is desirable to specify how to reach the next hop IP address.
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