Solved

STP Default setup

Posted on 2014-03-27
10
213 Views
Last Modified: 2014-04-02
If I understand STP prevents network loops on Cisco Switches.
Since it is that important, I wonder if it is enabled by default on Cisco Switches.

If it is enabled by default, does that mean if we connect 2 switches with multiple cables there is no worry about loops to happen ?

Thanks
0
Comment
Question by:jskfan
  • 4
  • 4
  • 2
10 Comments
 
LVL 50

Assisted Solution

by:Don Johnston
Don Johnston earned 334 total points
ID: 39958638
I wonder if it is enabled by default on Cisco Switches.
Yes, it is.

If it is enabled by default, does that mean if we connect 2 switches with multiple cables there is no worry about loops to happen ?
That is correct.
0
 

Author Comment

by:jskfan
ID: 39959629
so if it is enabled by default….and we do not have to worry about Network loops to happen…why it is big deal?
All they need to do is to make it hard coded so that noone can disable STP accidentally..
0
 
LVL 50

Expert Comment

by:Don Johnston
ID: 39959752
On some platforms, it can't be disabled. But even if it coundn't be disabled, it can be mis-configured.

And a broadcast storm can bring down the entire network.
0
 
LVL 45

Assisted Solution

by:Craig Beck
Craig Beck earned 166 total points
ID: 39961282
The default configuration isn't optimal - it's a fail-safe.  If you use it in a production network it probably won't provide you with great performance.  It might be ok to use if you want to connect a couple of switches, but in a large network it's not something you'd want to do.
0
 

Author Comment

by:jskfan
ID: 39963999
craigbeck:

can you please illustrate your comment ?

Thanks
0
6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

 
LVL 50

Expert Comment

by:Don Johnston
ID: 39964052
Personally, I can easily spend a day talking about STP tuning.  Root bridge placement, STP version selection, Root Guard, BDPU Guard, etc.  In a multi-switch, production environment, these are all things that should be tweaked.

Can you be more specific as to what you want?
0
 

Author Comment

by:jskfan
ID: 39968697
I know you can Tune it …
I want to know out of the box(Assuming STP is enabled)..then there is no Loop to concern ourselves about ?
0
 
LVL 50

Accepted Solution

by:
Don Johnston earned 334 total points
ID: 39968739
If you've saying that since spanning tree is on by default and no loop can occur, then why can it be configured.  The answer is to optimize it's configuration. But you "know you can tune it."

I'm sorry, but I don't see what the question is.
0
 
LVL 45

Expert Comment

by:Craig Beck
ID: 39968764
Are you asking why it's not optimal 'out-of-the-box'?
0
 

Author Closing Comment

by:jskfan
ID: 39972610
I guess I got it..
Thank you Guys !
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Join & Write a Comment

Getting hacked is no longer a matter or "if you get hacked" — the 2016 cyber threat landscape is now titled "when you get hacked." When it happens — will you be proactive, or reactive?
This is an article about my experiences with remote access to my clients (so that I may serve them) and eventually to my home office system via Radmin Remote Control. I have been using remote access for over 10 years and have been improving my metho…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

743 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now