Multiple Links between 2 Routers

[JoshGarmonCiscoCCNA]

What can you do with Multiple cables between two routers?

If there's three different links, do you use three different Subnets or does it get treated as one whole link still?

Does my Topology look strange or is it common?

Can Routing protocols work in such a situation?

[Ganesh Hariharan · Accepted solution]

What can you do with Multiple cables between two routers?


If there's three different links, do you use three different Subnets or does it get treated as one whole link still?


Does my Topology look strange or is it common?


Can Routing protocols work in such a situation?

Hi Josh,

First of all what exactly you want to achieve with architecture, it seems to be full mesh topology which are basically used in core backbone architecture of service providers. 

To maintain High availability they used to full connectivity with redundant links and you can top of this multiple routing protocol for routing subnet with best metric based on requirements.

Hope it Helps

-GI

Rate if it Helps..

[Masoud Pourshabanian]

Hello,

Actually, your topology is a little wired and uncommon for users, but it is not impossible.

If routers are connected by ethernet,  you are able to make etherchannel and treat all links as one link.

If you are getting service from a service provider, one link can be active and other passive or you can load balance across the links.

In WAN,the common way is to have two or more links to diffrent location (ISPs or sites) for backup or bandwith increase purpose.

Routing protocol works, but you have manipulate different features to deal with path selection.

Masoud