Troubleshooting Commands
185
From the information provided in Table 4.3, you can categorize the show
commands into four types: global, interface, process, and protocol-related.
Depending on the problem you are troubleshooting, you can focus on the
problem by using appropriate commands. For example, if you are trouble-
shooting a protocol-related problem, then you will probably use the protocol
family of show commands. If you notice problems on a circuit, you can use
the interface family of show commands to give you detailed information
about the interface.
Global Commands
Global commands deal with global router settings. This means that informa-
tion that does not relate to interfaces or protocols, yet has overall router
information, is considered to be a global show command. Table 4.4 shows
useful global show commands.
stacks
Process stack utilization
startup-config
Contents of start-up configuration
tcp
Status of TCP connections
tech-support
Show system information for Tech Support
version
System hardware and software version and status
T A B L E 4 . 4
Global show Commands
Global show
Command
Description
version
System hardware and software status
running-config
Current operating configuration
startup-config
Contents of start-up configuration
T A B L E 4 . 3
Frequently Used show Commands (continued)
show
Command
Description
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