So many loopback addresses on one router

Why so many loopback addresses on single router? What purpose will it solve?I

Hello Sarang

Loopback addresses are useful in various configurations of routers. These include:

  1. the use as a router ID for dynamic routing protocols such as EIGRP and OSPF
  2. the use as the location from which BGP peering takes place, especially when creating multiple links between routers
  3. for testing and diagnosis purposes

Loopbacks should only be created when necessary, if there’s no reason to have them, then there’s no reason to create them.

I hope this has been helpful!

Laz