Heloo everybody

I am phasign the problem with the interface of the loop back interface.Can any one solve with this problem?

i want to use tthe loop back interface on a router with

Loop back 1 172.30.1.0/16 with the ip add of 172.30.1.1 Loop back 2 172.30.2.0/16 with the ip add of 172.30.2.1

when i configured loopback 2 interface on a router the message of the overlap with loop back 1 why it will comes. How can i configure loop back 2 interface with the ip add? can any one guide ?

i want to simulate in eigrp process for the purpose of the summarisation.

with mentioned address

172.30.1.0 172.30.2.0 172.30.3.0 172.30.4.0 172.30.5.0 172.30.6.0 172.30.7.0 172.30.8.0

All of this ip address subnet is class B net work /16

I am new to this can any one guide me?

Thank you....

I don't think you can have those interfaces configured as being in the same network (as they are attached to different virtual loopback networks).

But if all you are trying to do is practice eigrp summary why not configure each loopback as a /24 address? You can still summarise them as as /16 if you want to.

Your networks are overlapping because of subnet mask. If you use /16 prefix you network should be like 172.29.0.0; 172.30.0.0; 172.31.0.0, if you want use addresses as you provide U need use /24 prefix in loopback address. for example 172.30.1.1 255.255.255.0 for loopback 1, 172.30.2.1 255.255.255.0 for loopback 2 and etc.

For eigrp summarization:

router eigrp 1

network 172.30.1.0 0.0.0.255

network 172.30.2.0 0.0.0.255

network 172.30.3.0 0.0.0.255

auto-summary

Actually auto-summary is active by default. You just need to represent your networks in eigrp process.

Hope it will helps. Sincerely, GRinch

Configuring router as Bridge would help you with this situation.

HTH... Deepak Arora http://deepakarora1984.blogspot.com