command should use when establishing multiple connection using EIGRP

[Jorrie]

Good day. I would like to ask what command should I use to establish a connection without manually encoding each network ID and how to use it.  An image is also attached

Here is the list of network ID:

192.168.0.0/30

192.168.0.4/30

192.168.0.8/30

192.168.0.12/30

192.168.0.16/30

[paul driver · Accepted solution]

Hello

You specify each interface of each router into eigrp routing process

Example (for packet tracer):
TOP rtr
router eigrp xx
no auto summary
network 192.168.3.1 0.0.0.0
network 192.168.0.13 0.0.0.0
network 192.168.0.9 0.0.0.0

[Georg Pauwen]

Hello,

not sure what you are asking - how to avoid adding each single network/interface to EIGRP ?

You could either summarize all your networks into one statement:

--> network 192.168.0.0 0.0.0.31

or use:

--> network 0.0.0.0

which includes all networks on all interfaces configured with an IP address.

[Jorrie]

Hi! thank you for answering my question and helping me. I know now how to summarize a network.

[Georg Pauwen]

Hello,

keep in mind that an entry like the one below:

network 192.168.0.9 0.0.0.0

is not summarization but rather the exact opposite. The '0.0.0.0' means that just this one IP address is in the EIGRP process. 

[paul driver]

Hello

---

@Georg Pauwen wrote:

is not summarization but rather the exact opposite. The '0.0.0.0' means that just this one IP address is in the EIGRP process. 

---

You want to be as specific as possible when advertising your networks  x.x.x.x 0.0.0.0 means it will advertise the directly connected network associated with that ip address, it doesn’t mean just a single ip address will be advertised, plus you get the added benefit of not mis-typing the subnet mask

network 0.0.0.0  = will advertised ALL existing and future interface networks something you may not want to happen

network 192.168.0.0 255.255.255.224 = will advertised ALL interfaces in range of 192.168.0.0/27 network  again something you may not want to happen

[Georg Pauwen]

@paul driver The question was how to avoid having to add each single interface to the EIGRP configuration, hence how to avoid having multiple statements. Summarization does exactly that.

At least that is how I understood the question...:)

[Jorrie]

Hi, I would like to ask since you mention "something you may not want to happen". will be there any problem?

[Jorrie]

Hi, I really appreciate your help. I'm a bit confused about your example "network x.x.x.x 0.0.0.0" especially on the 0.0.0.0 part since I'm still at beginner level. Base on my understanding of wild mask it will make the IP address a /32 I did try it but I'm unable to establish connections. I use this 192.168.0.0 0.0.255.255 configuration to establish connections between routers and PCs and it will also advertise IP address(Don't know what is the right term to use so I just called it IP address.) ranging from 192.168.0.0 to 192.168.255.255 which I'm aware of since I learn it awhile go in supernetting and by the help from both you. .

[paul driver]

Hello

---

@Jorrie wrote:

Hi, I really appreciate your help. I'm a bit confused about your example "network x.x.x.x 0.0.0.0" especially on the 0.0.0.0 part since I'm still at beginner level. Base on my understanding of wild mask it will make the IP address a /32

---

That is correct its stating to the routing proces that you want to advertise a directly connected network relating to an interface with this ip address.

example1:
int x/1
ip address 1.1.1.1 255.255.255.128 (/25)

int x/2
ip address 1.1.1.129 255.255.255.192 (/26)

int x/3
ip address 1.1.1.192 255.255.255.192 (/26)

router eigrp xx
network 1.1.1.1 0.0.0.0 < this will advertise  ONLY 1.1.1.0/25 network because interface x/1 has 1 1.1.1 assinged to it

example2:
router eigrp xx
network 1.1.1.128 255.255.255.128  <-this will advertise any networks in the range of 1.1.1.128/25 which would mean interfaces x/1 & x/2  that have networks in. that range- 1.1.1.128/26  & 1.1.1.192/26

example3:
router eigrp xx
network 0.0.0.0 <-this will advertise ALL networks, which would mean all interfaces and thier respective networks and any future ones too