Quiz Entry - updated: 2026.07.14
What are the key show commands for verifying switch configuration?
The core set: show interfaces, show running-config/show startup-config, show flash, show version, show ip/ipv6 interface, and show mac-address-table.
| Command | What It Shows |
|---|---|
show interfaces [interface-id] |
Interface status, statistics, speed, duplex, errors |
show startup-config |
Configuration stored in NVRAM (Non-Volatile Random-Access Memory) (survives reboot) |
show running-config |
Current active configuration in RAM (Random-Access Memory) |
show flash |
Files stored in the flash file system |
show version |
Hardware, software version, uptime, boot image |
show history |
Previously entered commands |
show ip interface [interface-id] |
IPv4 information for an interface |
show ipv6 interface [interface-id] |
IPv6 information for an interface |
show mac-address-table |
Learned MAC (Media Access Control) addresses and their associated ports |
Key distinction:
running-config= what's currently active (in RAM, lost on reboot unless saved)startup-config= what loads on boot (in NVRAM, persistent)- Use
copy running-config startup-configto save changes