INS_CNGE3FE8MS[POE][HO] Rev. 11.7.17 PAGE 287
INSTRUCTION MANUAL CNGE3FE8MS[POE][HO]
TECH SUPPORT: 1.888.678.9427
1727 local destination, 0 forwarding
0 header error, 0 address error, 0 unknown protocol
0 no route, 0 truncated, 0 discarded
Sent: 2553 total in 180047 bytes
1512 generated, 0 forwarded
0 no route, 0 discarded
Frags: 0 reassemble (0 reassembled, 0 couldn’t reassemble)
0 fragment (0 fragmented, 0 couldn’t fragment)
0 fragment created
Mcast: 0 received in 0 byte
0 sent in 0 byte
Bcast: 0 received, 0 sent
Show running-config
The virtual file running-config consists of a list of commands that, taken together, result in the
currently running system configuration.
This list of commands is usually not 100% identical to the list of commands a user has input to
configure the device. That is because running-config is a textual representation of the system
configuration that is stored in binary form in the RAM memory of the device.
Because the effective device configuration is huge, running-config in the majority of cases only
lists the delta between default settings and current settings. This significantly reduces the amount
of output and greatly improves readability of the configuration, but it does require the reader to
know what the default settings are.
With show running-config all-defaults, it is possible to include values that are at default.
Default vs. Non-default vs. All Defaults
In this example, if the speed and duplex settings of an Ethernet interface are at default values
(auto-negotiation), then nothing will be output. If the user then changes the speed to be fixed at
1 Gbps, then that value is now non-default and will be output. Duplex is also output because it is
forced to ‘full’ when the speed is fixed at 1 Gbps.
! Display current configuration for an interface. All settings are at default:
my-device# show running-config interface GigabitEthernet 1/4
Building configuration...
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