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Appendix B
Commands in This Study Guide
Command
Description
Chapter(s)
show span
Shows spanning tree information from
the router. Very different from a show
span on a switch.
11
show spantree
Reports the status of the spanning tree
process for each VLAN, when spanning-
tree has been enabled on the switch.
11
show stacks
Displays the router's stack information.
4
show startup-config
Displays the configuration version that is
saved in NVRAM.
4
show system
Provides high-level summary
information regarding the switch,
including the status of power supplies,
uptime and administrative settings, as
well as the percentage of traffic on the
backplane.
11
show tech-support
A comprehensive command that includes
show running-config
, show version,
show stacks
, show processes cpu,
and show processes memory, along
with many others.
4, 12
show test
The status of the switch, including
interface cards, power supplies, and
available memory.
11
show version
Displays the version of IOS, the reason
for last reload, and the router's hardware
configuration.
4, 5, 11
show vlans
Provides VLAN information and status
from the router.
11
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