What is the administrative distance of a static route?
1
Static routes have a default administrative distance of 1. A router prefers a static route to a dynamic route because the router considers a route with a low number to be the shortest.
What is Null0 in static route?
A null interface is a virtual interface that discards IP packets and is used to prevent routing loops from occurring in the network. You do not assign the null interface an IP address. Instead, you create a static route for a network and set the next hop to the null interface (null0).
What is the purpose of a Null0 route in the routing table?
Null0 is a virtual interface that is a route to nowhere and is used to prevent routing loops for destinations that are included in a summary network but do not have a specific entry in the routing table.
What is the default administrative value for a floating static route?
A floating static route is simply one that has an administrative distance value greater than that of the dynamic routing protocol being used. For example, any route that is learned via OSPF will have an administrative distance value is 110 by default.
What is the administrative distance of OSPF routes?
110
The router learns RIP routes with an administrative distance of 90, although the default is 120….Default Distance Value Table.
| Route Source | Default Distance Values |
|---|---|
| IGRP | 100 |
| OSPF | 110 |
| Intermediate System-to-Intermediate System (IS-IS) | 115 |
| Routing Information Protocol (RIP) | 120 |
What is standard static route?
A default static route is a route that matches all packets. A default route identifies the gateway IP address to which the router sends all IP packets that it does not have a learned or static route for. A default static route is simply a static route with 0.0. 0.0/0 as the destination IPv4 address.
What does IP route 0.0 0.0 mean?
IP route 0.0. 0.0 Fa0/0 in plain English means “packets from any IP address with any subnet mask get sent to Fa0/0”. Without any other more specific routes defined, this router will send all traffic to Fa0/0.
What is IP address null?
A null route or black hole route is a network route (routing table entry) that goes nowhere. Null routes are typically configured with a special route flag, but can also be implemented by forwarding packets to an illegal IP address such as 0.0. 0.0, or the loopback address.
What route would have the lowest administrative distance?
A directly connected will always have the lowest, at 0. A static route will always have an AD of 1, EIGRP is 90, and OSPF is 110.
What is a floating route?
Floating static routes are static routes that have an administrative distance greater than the administrative distance of another static route or dynamic routes. By default, static routes have an administrative distance of 1, making them preferable to routes learned from dynamic routing protocols.
How do I add a floating static route?
To create floating static route(s) you will create identical routes that already exist which go to R2 through the main frame-relay link to traverse the point to point link which have a higher administrative distance so as long as Serial0/0 is up traffic will take that path but if Serial0/0 fails the router will re- …
Why would a floating static route be configured with an administrative distance?
Floating static routes are used as backup routes, often to routes learned from dynamic routing protocols. To be a floating static route, the configured route must have a higher administrative distance than the primary route. It uses a single network address to send multiple static routes to one destination address.
