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Dynamic Routing Configuration

Translator
Community Manager
Community Manager

Hello,

I need help, I have the ip address which is 192.168.17.0/24 and I want it with dynamic routing.

How can I do it?

Topología (2).png

4 Replies 4

Hello,

 

If that 1 IP if for your whole network then it looks like you need to subnet.

https://www.calculator.net/ip-subnet-calculator.html

IN addition you cna just enable a basic routing protocol like below:

 

config t

router eigrp 1

network 0.0.0.0 255.255.255.255

end

 

 

-David

Translator
Community Manager
Community Manager

Salutations @everardo Thank you for communicating in the cisco community, please indicate what kind of dynamic routing you need as there are several,

OSPF, EIGRP, ISIS

All these will depend on what you need, please remember to like this post this keeps the community active.

You can use any one you are familiar with. In my example I used EIGRP.

Joseph W. Doherty
Hall of Fame
Hall of Fame

If you have a /24 address block, as @David Ruess already noted, you'll need to subdivide it into multiple smaller address blocks.

A /24 can be split into two /25s which can be split into two /26s which can be split into two /27s, etc.

Each router port will need a network address block.

LANs 1 and 2 note they need an address block large enough for 5 host addresses, plus you need an address for the router interface, so you need to use at least a /29 for those.

LANs 3, 4 and 5 note they need an address block large enough for 10 host addresses, and again, you need an address for the router interface, so you need to use at least a /28 for those.

Your router to router links also need an address block, often it is a /30, although later router protocols now often support using a /31.  Your diagram appears to indicate to use a /30 out of the 10.x.x.x address space.

Once all your router interfaces have an IP address, with the necessary network mask, you just need to activate a dynamic routing protocol, of your choice, and insure all the router interfaces you want in dynamic routing are selected.  Here too David provides a simple all-inclusive way to include networks into EIGRP.

If the forgoing is done correctly, you'll have a working network using dynamic routing.

However, for you hosts to use it, they too need to have IP addresses in the network address block you've selected for the LAN and futher, usually, have their router interface's IP, on the same LAN, defined as their gateway IP.

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