Question on EIGRP Auto-Summarization

[limtohsoon]

Hi Sir,

My router config as follows:

!

interface FastEthernet0/0

ip address 10.1.0.1 255.255.0.0

!

interface FastEthernet0/1

ip address 10.2.0.1 255.255.0.0

!

router eigrp 100

network 10.0.0.0

auto-summary

!

The router is performing auto-summarization. Let's say, if it receives advertisement for 192.168.1.64/26 (an internal EIGRP route) on interface Fas0/0, will it auto-summarize it to major network 192.168.1.0/24 when advertising it out interface Fas0/1?

And what about if 192.168.1.64/26 is an external EIGRP route?

Please advise.

Thank you.

B.Rgds,

Lim TS

[mojalefa1]

EIGRP support auto-summerization by default so there's no need for you to type auto-summary. In this case all you have to do is disable the auto-summarization and define your own summery routes.