Loopback Interfaces - Dell Force10 Z9000 Configuration Manual

Assign an IP address to an interface with the following command the INTERFACE mode:
Command Syntax
ip address ip-address mask
[ secondary ]
Figure 19-10
Figure 19-10. Sample Layer 3 Configuration of a VLAN
interface Vlan 10
ip address 1.1.1.2/24
tagged GigabitEthernet 2/2-13
tagged TenGigabitEthernet 5/0
ip ospf authentication-key force10
ip ospf cost 1
ip ospf dead-interval 60
ip ospf hello-interval 15
no shutdown
!

Loopback Interfaces

A Loopback interface is a virtual interface in which the software emulates an interface. Packets routed to it
are processed locally. Since this interface is not a physical interface, you can configure routing protocols
on this interface to provide protocol stability. You can place Loopback interfaces in default Layer 3 mode.
To configure a Loopback interface, use the following command in the CONFIGURATION mode:
Command Syntax
interface loopback number
To view Loopback interface configurations, use the
EXEC mode.
To delete a Loopback interface, use the
CONFIGURATION mode.
Many of the same commands found in the physical interface are found in Loopback interfaces.
See also Configuring ACLs to
| Interfaces
384
Command Mode
INTERFACE
shows a sample configuration of a VLAN participating in an OSPF process.
Command Mode
CONFIGURATION
Loopback.
Purpose
Configure an IP address and mask on the interface.
• ip-address mask: enter an address in
dotted-decimal format (A.B.C.D) and the mask
must be in slash format (/24).
secondary: the IP address is the interface's
•
backup IP address. You can configure up to eight
secondary IP addresses.
Purpose
Enter a number as the loopback interface.
Range: 0 to 16383.
show interface loopback number
no interface loopback number
command in the
command syntax in the