Network troubleshooting commands
A person's efficiency is greatly enhanced if he has the right tools. We have covered some NMS tools earlier, including SNMP, syslogs, and netflow. In this section, we will describe the commands that are used for network troubleshooting.
IOS commands
Cisco IOS provides a variety of commands for monitoring and troubleshooting a network. The commands are clubbed together as the show
commands. These commands are used to view the various parameters on the devices such as the configuration, interfaces, VLANs, IP addresses, protocols, and routing tables. We will discuss the specific show
commands in the next section.
The show
command output can be very long and certain keywords are used within the IOS to parse the information. Some of the keywords and their impact are listed as follows:
include
: This option shows the output of the command and includes only the lines that include the text that is passed on as an argument. The syntax for the usage of this option isshow...