September 2003
Intermediate to advanced
432 pages
8h 53m
English
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Troubleshooting Routing
Routing problems are notoriously difficult to resolve, particularly when routers that are external to your organization—such as on the Internet—are used. As an administrator, though, you can verify that your configuration has been set up correctly and also demonstrate that the routers within your organization are working as expected. This section outlines some of the utilities that can be used, such as ping, netstat, and traceroute.
Verifying the Configuration
You should confirm that the system being used as a router is configured correctly. Start by running the ifconfig -a command to verify that the network interfaces have been configured correctly. If the interfaces are marked UP and RUNNING, then also check the IP addresses, ...