cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1533
Views
20
Helpful
21
Replies

new rack room

Hi,

My company is going to make some changes in it's interiour - so we are forced to make new rack room.

Old one will stay as where it is, but we will connect two of rack rooms.

My questions is what two switches would be the best solution to connect two rack rooms?

Our first opinion is there must be two separate ways of cables that connect those two switches (one in each rack room).

Each cable must pass a lot of walls, and there is possibility of EM influence on cables.

We want two seperate ways so if one day something happens to one cable connecting two switches, we wouldn't lose connection between floors.

What would be better solution - ethernet 10gb uplink or fibre 8 gb between those two switches? or maybe both if it is possible?

And to make those two seperate ways of cables redundant.

Any answer, suggestion, tip would be very helpful!

21 Replies 21

And in case we get just two of 3560x and use existing 2960(1gb uplink) switches instead of 2960S(10gb).

So that my network would look like this:

[url=http://img84.imageshack.us/i/ciscoi.jpg/][img]http://img84.imageshack.us/img84/5955/ciscoi.jpg[/img][/url]

And interconnection between "core" switches:

[URL=http://img96.imageshack.us/i/cisco1.jpg/][IMG]http://img96.imageshack.us/img96/3440/cisco1.jpg[/IMG][/URL]

So you could have a better picture how my network is organized.

Can I in this example have 10gb as active link between rack rooms? And 1 gb as backup?

Would cisco in this case be smart enough to figure it out that all packets would go over 10gb link?

Or I need to place some config on uplink ports of "core" switches so I could have 10gb as active??

Can I in this example have 10gb as active link between rack rooms? And 1 gb as backup?

Well you can't etherchannel if you have two links with two different speeds.

Would cisco in this case be smart enough to figure it out that all packets would go over 10gb link?

STP is going to be a b@stard case!

Thanks a lot leolaohoo!!!

Thanks a lot leolaohoo!!!

Errrr ... I should be thanking you.  Not alot of people like being told "no, your solution doesn't work" and still get rated. 

Well... You didn't just say that..

I wasn't sure if STP will work it like I wanted - and you have confirmed it to me.

I would use etherchannel if I would have both 10gb uplinks, but due to low budget we couldn't go for it..

You gave me info i needed to make some examples of possible solutions!

Thanks!!

You can use two different ways as i see it.

you can use spanning tree (or pvst+ and so on)

or you can use ip sla to take up the 1gig link if the 10gig link gets shut down.

However I would like to stress out that if you use a 1 gig for a backup link for 10gig then you might run into trouble with the 1gig link being saturated.

You might atleast want to try to make an etherchannel for a couple of 1gig links.

if you do not want to do that you should not use more than 1 gig on the 10gig link.

Since you are writing in word i suspect you do not like visio for some reason.

have you tried DIA its a freware version of something similar as visio.

http://live.gnome.org/Dia

Good luck

HTH

Thanks a lot Hobbe!!

I haven't even heard for DIA.. I have used Visio, but trial has expired and I was looking for some freeware - so you helped me twice

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco