Interface - configuring a range of interfaces
On a Cisco IOS device, it is possible to configure a range of interfaces with the same configuration commands simultaneously. This can be done by specifying a range of interfaces when entering the interface configuration mode.
For example, the following command enters the interface configuration mode for all interfaces between the range of GigabitEthernet 0/0 and GigabitEthernet 0/10:
R1(config)#interface range GigabitEthernet 0/0-10 R1(config-if-range)#
All subsequent interface configuration mode commands will be applied to all the interfaces in the range.
A comma can also be used to specify non-contiguous ranges like so:
R1(config)#interface range GigabitEthernet 0/0 , GigabitEthernet 0/12 R1(config-if-range)#
The comma can also be used to allow you to specify other types of interfaces:
R1(config)#interface range GigabitEthernet 0/0 , FastEthernet 1/1 R1(config-if-range)#
This command is useful when configuring a large switch with dozens or even hundreds of interfaces that have similar configurations, such as access switches that connect to end user devices with ports that have the same configuration.
Links:
https://forum.networklessons.com/t/ospfv3-authentication-and-encryption/1263/18?u=lagapidis