RFUnderstanding the 'show ip route' Command
routing
network
ip route
command
table
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This page describes the show ip route command format, provides examples, and outlines its application in network troubleshooting.
The show ip route command is essential for understanding how a router makes forwarding decisions. It allows you to examine the routing table, which contains information about known networks and the best paths to reach them.
Here’s a breakdown of the different variations of the command:
show ip route Formats
The following table describes the different options available with the show ip route command.
| Command | Description |
|---|---|
#show ip route | Displays the entire routing table. |
#show ip route protocol | Displays routing information related to a specific routing protocol (e.g., RIP, OSPF, IGRP, EIGRP). Replace protocol with the actual protocol name. For example: #show ip route rip. |
#show ip route w.x.y.z | Displays information about the route to the specific IP address w.x.y.z. For example: #show ip route 192.168.1.0. |
#show ip route connected | Displays a table of directly connected routes. These are the networks directly attached to the router’s interfaces. |
#show ip route static | Displays a table of statically configured routes. These routes are manually configured by the network administrator. |
#show ip route summary | Displays a summary of all routes in the routing table. This often includes a count of routes learned via different sources. |
show ip route Command Application
The commands listed above are used to view routing table information. This information is crucial for:
- Troubleshooting network connectivity: Understanding the routing table helps diagnose why traffic might not be reaching its destination.
- Verifying routing protocol configuration: You can confirm that routing protocols are properly exchanging routing information.
- Analyzing routing paths: You can see the path traffic will take to reach a specific network.
- Identifying routing loops: The routing table can reveal inconsistencies that lead to routing loops.
- Validating static route configurations: Ensures that manually configured routes are correctly configured.
