EIGRP network command

Answered Question
Apr 9th, 2008
User Badges:

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

Correct Answer by Jon Marshall about 9 years 3 months ago

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

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.5 (2 ratings)
Loading.
mohammedmahmoud Wed, 04/09/2008 - 02:49
User Badges:
  • Green, 3000 points or more

Hi,


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


BR,

Mohammed Mahmoud.

Correct Answer
Jon Marshall Wed, 04/09/2008 - 02:52
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

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 Wed, 04/09/2008 - 03:09
User Badges:
  • Green, 3000 points or more

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 Wed, 04/09/2008 - 03:10
User Badges:
  • Green, 3000 points or more

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 Wed, 04/09/2008 - 03:47
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

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 Wed, 04/09/2008 - 05:09
User Badges:
  • Green, 3000 points or more

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.

Actions

This Discussion