Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

3Com Spanning Tree

Posted on 2010-09-02
1
Medium Priority
?
1,158 Views
Last Modified: 2012-05-10
We have 5 switch 3Com 3870 and 3 new 3Com (now hp) 4500G connected from first to last some by ethernet and others by fiber.

Now we want to connect last switch with the first one in order to give redundancy.

How do I configure the Spanning Tree on the 3870 and the 4500G?
Do I have to configure all switchs or only the last and the first?
What kind of configuration do I have to do?

Thanks
0
Comment
Question by:Mikkk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 3

Accepted Solution

by:
AndyEastham earned 2000 total points
ID: 33595569
Basically Spanning Tree Protocol is self configuring. You can create loops and STP will work out which links are redundant. Normally it will use the lowest cost link between nodes. If this link fails, it will automatically switch to the next lowest cost link.

All you need to do is make sure that STP is enabled on each switch that has multiple connections. I think 3com switches I've seen even come with STP enabled by default.You don't mention if you use VLANs - if you do, there may be a little more complexity.

When I first played with STPin a test network, I was astounded that it all "just worked" and you could connect multiple cables between multiple switches in all sorts of ways. Like you I think, intrinsically I thought this was a bad thing to do, and didn't initially trust it. But it really does work.

Best regards,

Andy
0

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tutorial will go through the steps required to write a script that will back up the configuration settings of a HP-ProCurve switch. You will need to get the following things to follow this tutorial: Telnet Scripting Tool e.g. TST10.exe …
WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
This course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question