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Privileged EXECDomain 1.0

show running-config

Spits out the entirety of the device's currently active configuration running in RAM. This includes interface IP addresses, routing protocols, access control lists, and security policies. It is the primary troubleshooting tool used to verify that global config commands were entered correctly.

Quick Reference

Execution ModeRouter#
Target MemoryVolatile RAM
Common Abbreviationsh run
Piped Filteringsh run | section [keyword]

CLI Deployment Scenarios

Scenario 1: Viewing the Config

Router# show running-config
Building configuration...
Current configuration : 1582 bytes
!
version 15.2
hostname R1
!
--More-- // Press Spacebar to advance a page, or Enter to advance a line.

Scenario 2: Piped Output Extraction

Enterprise configurations can be thousands of lines long. Instead of pressing the spacebar to manually scroll to the bottom to find OSPF details, you can "pipe" the output to filter specifically for what you want.

Router# show running-config | section ospf
router ospf 1
 router-id 1.1.1.1
 network 10.0.0.0 0.255.255.255 area 0