LACP, Load balance, trunk, bonding: HP Procurve 1810-24g

Hi Experts,

I have a network currently configured as image1 (below)
image1
Im thinking of replacing the the single CAT5e cables between the switches with 2x CAT6 cables image2 (below)
image2
I have a couple of questions..
1. What do I need to configure on the switches?
2. What trunk setting should I use? Static, Active or Passive
3. The trunk names, do they need to be the same or can it be different?
    Sw1; Trunk = uplink1
    Sw2; Trunk = uplink1
    Sw3; Trunk = uplink1
    Sw4; Trunk = uplink1
4. Switch 1 and 2 (ServerRoom Side) How would I go about configuring trunk between these switches?
5. Will I see network speed improvements?
 

I played around a liitle bit today and it can't be as simple as giving the trunk port a name and assigning the ports...

Image 3 and 4 is of switch 1 and 3 (the top switches on the images)
image3image4
Any other recommendations?

Thanks
LVL 16
Dirk MareSystems Engineer (Acting IT Manager)Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
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.

DLeaverCommented:
These are pretty low level switches and it is that simple

If you are going to enable the trunks on the production switches during a working day you will notice 4/5 packet drops while they are applied.

Some more info here:
http://h20564.www2.hp.com/hpsc/doc/public/display?docId=mmr_kc-0123135&sp4ts.oid=3963985

Personally I would choose static

It is best practice to name the trunks different names for different connections

The speed improvements will likely not be noticable but you will have resiliance
Don JohnstonInstructorCommented:
1. What do I need to configure on the switches?
Nothing special other than making sure all the links that will be aggregated are configured identically prior to creating the trunks.
2. What trunk setting should I use? Static, Active or Passive
Active. No question about it. Active.  Here's why:  What this is doing is deceiving STP that there are not multiple links between the switches (because if there were, STP would block one of the links). With using a trunk setting of "static", if there's ever a problem with the trunk (tagging mismatch, etc.), the trunk will fail but the links will stay up. But STP won't block the redundant link (because it doesn't even know about it) and you'll end up with a broadcast storm which could impact the entire network.  

In Active mode, if there's a problem, LACP will disable the links if there's a problem with the trunk.
3. The trunk names, do they need to be the same or can it be different?
I like to use different names for each trunk. Makes working on the network later much easier.
4. Switch 1 and 2 (ServerRoom Side) How would I go about configuring trunk between these switches?
Looks like you got that figured out.
5. Will I see network speed improvements?
Maybe. Contrary to what a lot of people think, a pair of aggregated 1gb links doesn't give you a 2gb path. The traffic sent over the trunk is distributed by flow (a session between two devices is a flow) based on a hashing algorithm which may (or may not) distribute the flows equally.

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 Hardware-Other

From novice to tech pro — start learning today.