Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 1 Interface Management Commands
3Com Corporation
1-10
Interface Description Attribute
Bri ISDN BRI interface Physical interface
Bridge-Template
Bridge-group virtual
interface
Logical interface
controller e1 E1 interface Physical interface
controller t1 T1 interface Physical interface
controller e3 E3 interface Physical interface
controller t3 T3 interface Physical interface
Dialer Dialer interface Logical interface
Ethernet Ethernet interface Physical interface
gigabitethernet Gigabit Ethernet interface Physical interface
Logic-Channel Logical-channel interface Logical interface
Loopback Loopback interface Logical interface
NULL Null interface Logical interface
MFR
Multi-link FR (MFR)
interface
Logical interface
Serial
Synchronous serial
interface
Physical interface
Virtual-Ethernet VE interface Logical interface
Virtual-Template Virtual-template interface Logical interface
Tunnel Tunnel interface Logical interface
Remembering the interface numbering convention mentioned earlier, you could know
that the name of a physical interface is represented by interface type + interface
number. For example, Ethernet0/0/0 represents the Ethernet interface numbered 0/0/0,
and Serial0/0/0.1 the first subinterface on the interface Serial0/0/0, and interface
Serial3/0/0:2 the second channel set of the CE1/PRI interface (namely controller
interface) numbered 3/0/0.
The name of a logical interface is represented by interface type + interface number, for
example, tunnel 0.
You can however shorten the type portion in the interface name by inputting only the
leading conflict-free letters, for example, e0/0/0 for Ethernet 0/0/0 and s0/0/0.1 for
Serial 0/0/0.1.
You can enter the view of the desired physical interface and create logical interfaces or
subinterfaces as needed by executing the interface command.