Router troubleshooting

In this section, you will get acquainted with some of the possible scenarios of problems that may occur in routers.

Verifying IPv4 interface settings

So far, we have seen that the show command accompanied by its relevant options is quite handy in identifying various issues on switch interfaces. In that line of discussion, we are interested to know how handy the show command would be in identifying issues on router interfaces. The following lists some of the show command variations that can be used to verify IPv4 interface settings:

• The show ip interface brief command shows some brief information about all the router's interfaces, including their IPv4 addresses (see Figure 8.5):

Figure 8.5. The...