Why does each interface on a router has an IP address instead of router having only IP address for itself.

Discussion created by Guest on Mar 21, 2012
Latest reply on May 15, 2013 by alalam

This question is bugging me for a while and I am surprised to know people who ought to know these things dont actually know.

So my question is -

Why each interface on a router has an IP address. If we work around, we could devise a system where each router had only one IP address. Is there any historic reason for this? or is it demand of some 'scenario' ? If its because of some scenario, whats that scenario which neccessiates a router to have one IP each interface?

my Second question is - other than one IP for each interface, does a router also has a sepearte IP for itself as a device?


PLease answer it.


Thanks and regards.


Rohit Yadav