EIGRP network command

[caijunjie]

Hi all

Can someone help to explain what does network 0.0.0.0 do. An example would be

router eigrp 1

network 0.0.0.0

auto-summary

What route does the above advertise.

Thanks in advance

[mohammedmahmoud]

Hi,

The "network 0.0.0.0" will run EIGRP on all your router interfaces.

BR,

Mohammed Mahmoud.

[Jon Marshall · Accepted solution]

The network statement under EIGRP does not advertise any networks. What the network statement does is tell the router on which interfaces to run EIGRP.

0.0.0.0 will match all interfaces so it is saying run EIGRP on all interfaces on this router.

Jon

[mohammedmahmoud]

Hi Jon,

I believe that we can add another statement in order to solve the original poster confusion. The network statement tells the router which interface(s) to run EIGRP, the router will advertise all the networks configured under the interfaces running EIGRP out of all the interfaces running EIGRP.

BR,

Mohammed Mahmoud.

[mohammedmahmoud]

Hi Jon,

I believe that we can add another statement in order to solve the original poster confusion. The network statement tells the router which interface(s) to run EIGRP, the router will advertise all the networks configured under the interfaces running EIGRP out of all the interfaces running EIGRP.

BR,

Mohammed Mahmoud.

[Jon Marshall]

Hi Mohammed

Hope everything is going well.

Apologies for the cross post - i posted just after you so i think we both deserve rating. I agree the above clarifies the point very well.

Jon

[mohammedmahmoud]

Hi Jon,

I am fine, and i hope that you are fine too, no need for apologies from you Jon, both of us are trying to help the people out here with our different prospectives and ideas, thanks for the rating and really its a pleasure being part of the forum with people like yourself.

BR,

Mohammed Mahmoud.