Spanning Tree Protocol STP Tutorial – Premium Tutorial
To provide for fault tolerance, many networks implement redundant paths between devices using multiple switches. However, providing redundant paths between segments causes packets to be passed between the redundant paths endlessly. This condition is known as a bridging loop.
(Note: the terms bridge, switch are used interchangeably when discussing STP)
To prevent bridging loops, the IEEE 802.1d committee defined a standard called the spanning tree algorithm (STA), or spanning tree protocol (STP). Spanning-Tree Protocol is a link management protocol that provides path redundancy while preventing undesirable loops in the network. For an Ethernet network to function properly, only one active path can exist between two stations.
Let’s see a situation when there is no loop-avoidance process in operation. Suppose you have two switches connected with redundant links. One switch connected to PC A and the other switch connected to PC B.
Now PC A wants to talk to PC B. It then sends a broadcast, say an Address Resolution Protocol (ARP) to find out where the location of PC B, the green arrow shows a broadcast frame sent by PC A.
When the switch A receives a broadcast frame, it forwards that frame to all ports except the port where it receives the request -> SwA forwards that ARP frame out of fa0/0 and fa0/1 ports.
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9tut please help i will give ccnp Routing exame in next 15 days
where i can study ccnp simulator please provide the link.
i will waiting for you replay
@Jamwal – The answer is A.
A) root and alternate – RSTP introuduce alternate route. Thanks
please refer to 9tut explanation on RSTP
@Jamwal – The answer is C
C) alternate and backup – RSTP introuduce alternate and backup route. Thanks
please refer to 9tut explanation on RSTP
@Jamwal – The answer is B
B) root and desiginated
In RSTP, root and designated ports are the only ones forwarding and therefore the only ones included in the active topology. All ports on the root bridge are designated ports. Each non-root bridge has a root port. Every segment has only one designated port. All other ports are not forwarding.
Hi All, I did not understand the process of changing Bridge Priority. Can anyone please explain how we change Bridge Priority as stated like (4096+vlan no). From where did we get the VLAN No. ? Please assist me in this regards. Also how do we take multiple of 4096?
understood the basic concept. thank u for the simplification:)
@9tut – good explanation regarding broadcast storm
@9tut – Nice tutorial , understood it well… Xallax and 9tut , plz let me know your email id . atleast , i want to communicate with you guys
Hi 9tut, do you have tutorial for MSTP? Most of the switch currently is running on MSTP. I can learn from google, but I prefer your way :-) thanks.
pls help me. if anyone have Spanning Tree Protocol STP Tutorial of this site. pleas email me.
asankatm@gmail.com
shit…what you did for poor guys like us 9tut… :(
Need STP tutorial
Please send me at rehan-500@hotmail.com
How to register to 9tut
@Anonymous: You can find out more here: http://www.9tut.com/we-want-to-write-more
I need STP tutorial from 9tut.com
Can anyone send me at haigoo77@live.com
Great learning experience 9Tut :) Many thanks, price for premium is such a low price for what we get in return.
anyone got the tutorial send me at burn_notice33@yahoo.com pleaseeeeee , ThanQ
in a ring of four switches how are the ports decided on the last link – the one containing the blocking/designated ports between 3 and 4 (1 being the route and all costs being the same)
2d r3
r ?
d ?
1d r4
in a ring of four switches how are the ports decided on the last link – the one containing the blocking/designated ports between 3 and 4 (1 being the route and all costs being the same)
2d r3
r ?
d ?
1d r4
Dear 9tut and all
I was confusing of these two commands between the “spanning tree@ global config” and “spanning tree @ interface config.I don’t know what command to be use for spanning tree in several vlan
Can anyone help me ;)
@DERK: The “spanning tree” in global config is used to enable STP for all ports in all VLANs while the “spanning tree” in interface/vlan config is used to enable STP on an individual Port/vlan.
Note: By default, spanning tree runs on all ports of a Cisco switch.
@ 9TUT
I’m so greatly to have a prompt response from you 9tut
Now, I have knowledge for these differences functionality between the two commands..
Thank a lot to you 9tut..
please email STP tut9 tutorial to anita.krajput@gmail.com
Would anyone be so kind to share the full tutorial? I do not have credit card, but I really want to pass my exam this coming March. Would be needing your help and support in here. Praying for somebody to share success with. Thanks, you guys! :)
Need STP tutorial
Please send me at josetelematica@gmail.com
Please, kindly help me to send STP tutorial.
Thank
bunhongkruy168@gmail.com
I READ THIS HELPFUL
http://www.routeralley.com/ra/docs/stp.pdf
can any one send me STP tutorial of 9tut. plz plz
agminshad@gmail.com
http://www.cisco.com/warp/public/473/spanning_tree1.swf
Need STP tutorial
Please send me at erangadpm@gmail.com
The Cisco Link is a dead one.
Explained very nicely.
Tje SWF link changed to http://www.cisco.com/image/gif/paws/10556/spanning_tree1.swf
can any one send me stp tutorial of 9tut plz plz at…..
ranashakeel.iet@gmail.com
hi guys
many thanks for your help and Mr SAM your web site http://www.routerrellay.com it is more usefull , and i have a question what is last version of pass4sure because i need to join cisco exam or if anyone have it he can send me in my email : alfaris200@yahoo.com
Hello Guys.!!
Can somebody send me CCNA dumps at gchauhan@unomaha.edu ?
is that all tutorial for stp ?
how to access 9tut on free basis
is that all??
How gross! How come this is theory about STP?? This is not STP theory
@avik, wanting everything for free or everything for minimal charge is gross, maybe
@tut This is by far the best explanation I have ever come across.
Hello Guys.!!
Can somebody send me CCNA dumps at behnam.zanjani@gmail.com ?
Hi dudes..
Can somebody send me CCNA dumps 200-100 or link at spprabhakarancse@gmail.com
http://info-it.net/cisco/ccnp/switch/spanning-tree-protocol.php
Cisco CCNA Labs
http://info-it.net/cisco/labs/ccna/r&s/ccna-labs.php
Hi all, Actually I planned to do CCNA(200-120) certification on r before 20th Nov this year. I just wanna know whether watson 314, examtut 278 and Acme 261 dumps are all enough or not for to do the certification… Moreover I have practiced all simulations from 9 tut… Anything else more than this… pls guide
Also need STP tutorial…
can any one send me stp tutorial of 9tut please
heavncong@gmail.com
Hi