[sdnog] Links value to share "STP"

[Sahlih Shihab]

Thanks Sirag for shearing, and Nishal, Patrick I will take a look in TRILL indeed 
Thanks all 

----- Original Message -----

From: "Sirag Mahgoob Sirag" <sirag.mahgoob at sudren.edu.sd> 
To: "Sahlih Shihab" <salih.shihab at sudren.edu.sd> 
Cc: "Nishal Goburdhan" <nishal at controlfreak.co.za>, sdnog at sdnog.sd, "Patrick Okui" <pokui at psg.com> 
Sent: Wednesday, January 20, 2016 10:33:41 AM 
Subject: Re: [sdnog] Links value to share "STP" 



Dears 
Regarding to STP, Last week I asked to support some network engineers to do some troubleshooting to their network which content more the 100 switchs including 2 core switches, the problem is there is some parts in the network not working then suddenly back to work, after investigation we found that all the problem due to the configure their network without setting switch priority , for sure the network that have all these switches will suffer from looping and the STP will take place to work, and without focusing in setting priority any access switch will be your network root and you will suffering from some strange problems. 
SO, DONT LET STP PLAYING IN YOUR NETWORK AS IT WANT. 




Thanks 
----- Original Message -----

From: "Patrick Okui" <pokui at psg.com> 
To: "Nishal Goburdhan" <nishal at controlfreak.co.za> 
Cc: sdnog at sdnog.sd 
Sent: Tuesday, January 19, 2016 9:55:07 PM 
Subject: Re: [sdnog] Links value to share "STP" 



On 19 Jan 2016, at 16:59, Nishal Goburdhan wrote: 



On 18 Jan 2016, at 11:01, Sahlih Shihab wrote: 
<blockquote>


Dear Sdnog 
Greetings 
The URL http://www.cisco.com/c/dam/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-spanning-tree1.swf contend a nice demonstration for Spanning Tree Protocol "STP" using flash, and I found its valuable to share it with you. 
If you have questions do not be shy and ask here. 
Thanks 



salih, 

STP is now considered an old, and outdated technology, even though it’s still used heavily. 
and it has its fair share of problems. 
if you’re interested in L2 interconnection, try to lookup material on TRILL; those of you in the best practices class on switching during sdnog-2 should remember that we spoke about this a bit. 
</blockquote>


The flip slide is almost any manageable switch will support STP; unfortunately not that many support TRILL (at least last I checked). Unfortunately though, many vendors do NOT turn on STP by default even today! 

To further clarify what Nishal has said: 

    * 

if this is a new deployment and you have the choice, look at TRILL rather than STP. 
    * 

if TRILL is not a choice then please turn on STP. On top of turning it on, please set priorities so you have your root bridges (and backup root bridges) where you would want them. You can mitigate the L2 scaling issues by pushing the switched domain as close to the users as possible. i.e by reducing the number of devices a user goes through before they hit a router. 



-- 
patrick 

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-- 



		
Sirag Mahgoob M. Sirag | Head of Operation Unit 
Sudanese Research and Education Network | SudREN 
Nile St. | University of Khartoum 
Tel: +249155662071 | Mob: +24912378884 7 





-- 

	
	
Salih S. M. Abdelhameed | Head of Electronics Service Unit 
Sudanese Research and Education Network | Address 
Nile St. | University of Khartoum 
Tel: +2491556620 71 | Mob: +24912 3788843 



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