Spanning Tree Config

Hi There,

I'm looking for advice on STP setup. The topology is quite simple for this campus like network. There are multiple buildings on the grounds but all switches, except for a couple of distribution switches, all come back to a data center. (diagram)

In the data center, there is a stack of 5 switches that provide connectivity to the VMware hosts and SAN (iSCSI/LAN), as well as the uplinks to about 30 other switches (LAN). There are about 5 vlans for corporate traffic. Inter-vlan routing is done through direct-connected vlan-interfaces on the "core".

There is no support for SPB or Trill on the core, only STP, RSTP, or MSTP (HP a5800s).

All uplinks to the core are aggregated (2 from each switch). There are not multiple paths per say because everything runs right back to the core although the aggregated links go over different fiber paths for redundancy.

I'm just trying to figure out the spanning tree. While there shouldn't be any loops in this spoke and hub type of topology, i figure you should always have it enabled. I'm wondering a few things:

1. Should i have STP enabled on the core
2. Where is the best place to put the Root Switch? Core? other?
3. Is RSTP fine or should i go with MSTP. If so, do you designate more than one root switch?

thx
simple-diag.pdf
GrayconAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Craig BeckCommented:
1. Always enable STP - even if you don't have any loops it prevents them being inadvertently introduced in the future.
2. STP should be as central as possible in a star topology.  If all switches come back to one place, that is the best candidate for root.
3. RSTP is fine.  I don't see a need for MSTP in your deployment.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Networking

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.