Routing design

[catalystexpress]

Hi All,

Can you please give me your suggestions for the below setup

I have network in a triangle setup, each router have a primary and one backup link, I plan to run EIGRP on all the links and IP addressing as below 

Between R1 and R2 both primary and backup would be 172.16.71.0/29

R1 and R3 both primary and backup would be 172.16.71.8/29

R2 and R3 would be 172.16.71.16/29 (both primary and backup)

R1 ===========R2

| |                         ||

| |                         ||

------------------------------                    

         R3

I believe by doing this way, there would be a FS always in EIGRP topology, and later if we add hardware redundancy do you think will i have any issue with IP addressing, if possible can you please give me a idea like what would be the topology when hardware redundancy is added.

Many thanks for the support......

cheers....

[Marwan ALshawi]

I think to simplify you link redundancy and routing make each pair of links in logical etherchnnal link this way from L3 routing point of view you will have one link/ip to each router to make you routing config and design easier while from L1 and 2 there are two redundant bundled links

How this help

If helpful Rate

[catalystexpress]

thanks for the reply, so it would be like below

R1 ===etherchanle/x.x.x.x/30====R2

||                                                  ||

ethre y.y.y.y/30                          ether z.z.z.z/30

||                                                 ||

------------------------------------------------------

               R3

am i right to say when hardware redundancy is added, i would require to remove this etherchannel (3750V2)

Or

Can i stackup the switches and have it bundel it, would this be a better topology, because this would be the core switch for routing VoIP and Data traffic

Thanks again...Cheers....

[Marwan ALshawi · Accepted solution]

Always keep the links like this so you can have link level redundancy and when you add additional core switches you will have device level redundancy as well

Whe you use 3750 stack use different switches. From each stack to form the etherchannal as one logical switch for better high availability and redundancy

Hope this help

[catalystexpress]

thank you very much...will try out the topology in GNS3 software and learn it more...thanks again...cheers...

[Marwan ALshawi]

but GNS3 will not let you test stacked siwtches with etherchannel

anyway you can try the concept and search for L3 etherchannel examples as well

HTH

plz rate the helpful posts

[catalystexpress]

yeh it did not work...anyway will try other simillar topology and learn more....thanks again