Command
Inteface
Use
Selects an interface on the router to enter into configuration mode.
Syntax
Router(config)#interface FastEthernet <0-6>
Optional Switches
| -Async | Async interface |
| -BVI | Bridge-Group Virtual Interface |
| -CDMA-Ix | CDMA Ix interface |
| -CTunnel | CTunnel interface |
| -Dialer | Dialer interface |
| -FastEthernet | FastEthernet IEEE 802.3 |
| -Group-Async | Async Group interface |
| -Lex | Lex interface |
| -Loopback | Loopback interface |
| -MFR | Multilink Frame Relay bundle interface |
| -Multilink | Multilink-group interface |
| -Null | Null interface |
| -Port-channel | Ethernet Channel of interfaces |
| -Tunnel | Tunnel interface |
| -Vif | PGM Multicast Host interface |
| -Virtual-PPP | Virtual PPP interface |
| -Virtual-Template | Virtual Template interface |
| -Virtual-TokenRing | Virtual TokenRing |
| -range | interface range command |
Example
Since there are many different interface options we have added an interface section with some of the more useful commandsfor a CCNA candidate.
This example shows how to use the interface command to enter config mode for FastEthernet 0/0
R3(config)#interface fa0/0 R3(config-if)#