Version 6.8 79 Mediant MSBR
Configuration Guide 13. Loopback Interfaces
13 Loopback Interfaces
Loopback interfaces are logical interfaces configured by the network administrator, which in
contrary to physical interfaces on the MSBR, will always be in “Connected” and “IP” state,
as they do not correspond to a physical port. Usage of loopback interfaces for
management IPs, router IDs for various protocols and persistent peer IDs for neighbor
relationships is considered good practice.
IP addresses on these interfaces are configured without a subnet mask, as they are by
definition /32 e.g. single host subnet.
13.1.1 Loopback Interface Configuration
The following describes the commands for Loopback Interface configuration.
Command Description
Enters the data configuration menu.
(config-data)# interface loopback
number
Creates a loopback interface (up to 5) and enter
the interface configuration mode.
Interfaces configuration mode.
The configuration options available for loopback interfaces in the interface configuration
mode are generally similar to those of physical interfaces, except for L1/L2 options.
13.1.2 Example of Loopback Interface Configuration
The following is an example of Loopback Interface configuration.
13.1.2.1 Configuration
MSBR# configure data
MSBR(config-data)# interface loopback 1
MSBR(conf-if-Loopback 1)# ip address 1.1.1.1
MSBR(conf-if-Loopback 1)# description LOOPBACK
13.1.2.2 116BOutput
MSBR1# show data ip interfaces brief
Interface IP Address Status
Protocol
GigabitEthernet 0/0 100.0.0 .10 Connected
Up
Fiber 0/1 unassigned Enabled
Up
VLAN 1 192.168.1.1 Connected
Up
VLAN 2 192.169.2.1 Connected
Up
Loopback 1 1.1.1.1 Connected
Up
To Next Page
Loading...
Need help?
General
