Cisco 1900 IOS Configuration Commands
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Todd1900EN(config)#int ethernet 0?
/
Todd1900EN(config)#int ethernet 0/?
<1-25> IEEE 802.3
After the 0/ configuration command, the output shows the number of
ports you can configure. However, if you only have a 1912 switch, you really
only have ports 112, 25 on the back of the switch, and 26 and 27 as the
100Mbps uplinks. The Fast Ethernet ports did not show up on the preceding
output because we chose the Ethernet interface as our type and the ports are
Fast Ethernet.
The next output shows the completed command.
Todd1900EN(config)#int ethernet 0/1
Once you are in interface configuration, the prompt changes to (config-
if
). After you are at the interface prompt, you can use the help commands
to see the available commands.
Todd1900EN(config-if)#?
Interface configuration commands:
cdp Cdp interface subcommands
description Interface specific description
duplex Configure duplex operation
exit Exit from interface configuration mode
help Description of the interactive help
system
no Negate a command or set its defaults
port Perform switch port configuration
shutdown Shutdown the selected interface
spantree Spanning tree subsystem
vlan-membership VLAN membership configuration
You can switch between interface configuration by using the int e 0/#
command at any time from global configuration mode.
Fast Ethernet Interface Configuration
To configure the two Fast Ethernet ports, the command is still type slot/
port
, but the type is Fast Ethernet instead of Ethernet. An example would be
interface
fastethernet 0/#.
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