Loopback Interface - Supermicro SSE-G24-TG4 Configuration Manual

SMIS# show ip interface
mgmt is up, line protocol is down
Internet address is 192.168.100.102/24
Broadcast address is 192.168.100.255
Gateway 0.0.0.0
vlan10 is up, line protocol is up
Internet address is 10.10.10.1/24
Broadcast address is 10.10.10.255

1.2.9 Loopback Interface

Supermicro switches support a loopback interface, which is a virtual interface and is not connected to
any other device. Loopback interfaces are very useful since they will never go down unless the entire
router goes down. This is useful for managing routers because there will always be at least one active
interface on the routers: the loopback interface.
Follow the steps below to configure loopback interface.
Step Command
configure terminal
Step 1
Step 2 interface loopback <interface-id (1-100)>
Step 3 ip address [<ip-address> | <ip-address>/prefix-
length] [<subnet-mask>]
Step 4 no shutdown
Step 5 end
show ip interface
Step 6
show interface loopback <1-100>
Description
Enters the configuration mode
Enters interface configuration mode to
specify the interface to be configured
as a Layer 3 interface.
Configure IP address.
ip-address – A valid IPv4 address.
ip-address/prefix-length - A valid IPv4
address with a prefix length of value 1-
32.
subnet-mask – A valid IP subnet mask.
NOTE: Subnet mask should be 32-bit for
loopback interface.
Enable the loopback interface
Exits the configuration mode.
Displays
configuration.
Display
Supermicro L2/L3 Switches Configuration Guide
the Layer 3 interface
the loopback interface
9