ICND2 – STP

Could you please provide some explanations in regards to Question 2? As far I can see the cost is the same. I don’t get it.

Marc,

The port role is Alternate meaning that another switch port in the network had lower cost path for vlan2. From the output all you can tell is that the switch shown is not the root for that vlan and its cost is 19 meaning another port had a cost of 18 or lower. Potentially also could have another port with a cost of 19, but had a lower MAC address of the switch.

Can you please provide the diagram for Q2.

Q2.I thought it was D. but reading carefully, if the local switch had a lower Bridge ID than the elected designated switch then the output will show all ports role as Designated Ports implying that “This is the root bridge” but it is not the root bridge because the output shows Root Port roles how to get to the actual root bridge. Now C makes more sense, the key word in C. is “Path” remember the local switch adds cost in the path to get to the root bridge.

Regarding Q #2:

The switch has already selected it’s Forwarding Ports. Because it has ALREADY selected them must mean that FA0/10 must have a higher cost value.

Marc,

Since the priority of both switches are equal then the mac address breaks the tie. Compare each digit of both mac addresses until the one with the lowest digit wins. xxxx.xxxx.xxxx.733a (SW3) and xxxx.xxxx.xxxx.7347 (SW4) are equal until the 3rd digit in the final set. SW3’s 3 is lower than SW4’s 4 so SW3’s port will have a lower cost. SW3 becomes the designated port and SW4 is blocked.

Correction: xxxx.xxxx.733a (SW3) and xxxx.xxxx.7347 (SW4)

The key to question 2 is that it is the output for the command
show spanning-tree interface fa0/10

Under Per VLAN STP this interface has a state for every STP instance listed by VLAN

A. This switch has more than one interface connected to the root network segment in VLAN 2. Not the answer. This switch may not even be directly connected to the root segment.

B. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree. Not the answer, RSTP is designed to work with STP.

C. This switch interface has a higher path cost to the root bridge than another in the topology. This would cause the port to be blocked.

D. This switch has a lower bridge ID for VLAN 2 than the elected designated switch. Not the answer because a designated switch by definition would have a lower root cost than the current switch, making BID irrelevant.

So C is the only thing that qualifies as an explanation for the blocking result in the output.

Hi i just took the test today and failed with a 820. The reason why is because of all the rstp questions they asked me. Can you please post up more rstp questions please.but everything else was good help.

Took ICND2 earlier today, 986 / 1000.

All 5 questions form this page were on there.

Many thanks 9tut!

Mike anything else to share us ?
I going to take it may be next month.

MIke I want to know about LAB – 23 April i am having exam

Mike, I third this question – I am taking the test in less than two days, I appreciate your feedback on all the pages I have seen 🙂 I will surely provide mine when I finish.

Share anything you can about any subject 😀

I’ve memorized Nada’s dump along with every question and explanation on 9tut. I am only doing the ICND2 to re-certify my CCNA but I have an obsession with making myself over confident.

Hi Justin. see my note towards the bottom of the “share your ICND2 experiences” page.

basically this site is hugely helpful, but you will definitely also need a book and i would recommend downloading some past exam questions using examcollection.com. You will need to pay £20 for the s/w to view those exams but it’s well worth it imho.

Thank you for your response!

I’ve been practicing heavily in using Exam Collection (Nada 120q), 9tut, CBT Nuggets (Jeremy Cioara – Amazing videos btw!) and Packet Tracer to memorize commands and configurations requirements. I feel like I have memorized every question and understand the reasoning for it. (Cisco has their lovely way of making every word count)

I meant to take the test today I had some non-sense come up that took me away for the day. I will take the test Mon. or Tues. now. (4/28/2014 or 4/29.2014)

I am only doing the ICND2 to recertify my CCNA. I also took a year long CCNA Cisco Academy class (in 2011) and things are coming back to me pretty quick. But since I took the 640-802 and I remember hearing the ICND2 was a bit more in depth than the CCNA. But shorter And without a Cisco instructor breathing down my back telling me what I am missing I feel like I have to do the breathing lol.

Anywho, I will report back when I finish my test. Thank you for the input!

Took the test and passed yesterday 986/1000!

All 5 questions from this page were on there

Q2 answer A… If this switch had two connections to the “root network segment in VLAN2”, and the other port which was connected was f0/9 or lower, wouldn’t the lower port be the root port and forwarding and f0/10 be alternate port and blocking?

Took the exam today. Pass 986/1000. Q1, Q2, Q3, Q4, Q5 were on there.
Thanks 9tut.

Tested today, 8/20. All 5 of these were on there. Lots of spanning tree questions!

I did my ICND 2 exam today. They asked a lot questions regarding RSTP, none of these questions are mentioned in here. I didn’t remember the questions so sorry for that. i would say studie RSTP aswell before taking the exam.

Thanks 9tut

took the exam today and pass with 907. Question 1 through 5 were on there.

location United States Florida.

test ICND 2

Thanks 9tut

Took ICND2 today 986/100. All of these were on there. Thanks 9TUT

Failed today. 801/1000. A lot of RSTP questions that weren’t covered here.

Hi Guyz!
Because people are saying that there are more questions about STP and RSTP, does anyone know where can we find them !?

Thank you very much!

Can you update the link for the Spanning-tree-protocol guide?

The question, answer and explanation for #5 don’t really seem to match. Could you look at those again? 🙂

Thanks!

can someone advise about the RSTP ? I see no questions on 9tut but I believe there will be some?

I jsut came back from the exam. there is some STP but the majority of my LAN questions were RSTP. The image above with the distribution access and core layer was present but in RSTP instead of STP. Know your RSTP ports States, RSTP Root Election and which ports would be blocked during an RSTP convergence where the cost paths are unequal

Q3 on my exam today

Hi The link to ‘Spanning Tree Protocol STP tutorial’ isn’t working.

for those complaining of additional RSTP qs

Check the CCNA site
not ideal but I am fairly confident they or at leat the theory will be coverd there.

Does the site have the latest CCNA test questions?

passed on 3/13. questions 1,2,3 and 5 on there. tks 9tut

Study STP and RSTP!! there were more questions than are listed on here. Specifically the election processes. I still passed, but was very close to failing. You have been warned!

ditto meh’s comment

The CCNA page has the correct questions for STP/RSTP on ICND2. 9Tut should copy those Q’s to the ICND2 page.

3 comments saying that you got 986/1000? n8, izzarazzu, mike…
Isn’it strange?

I got all of those questions today in my ICND2 exam.
Q1, Q2, Q3, Q4, Q5.
Thanks 9tut.

Ditto Richs comment above. Check the RSTP questions on the CCNA page.

Q1,2,3,4,5 today ICND2

Is any body took the test in jun?

Taking the test next Friday June 26th. I’ve used the Lammle book, CBT Nuggets, and this site. Will report back when test is complete.

great bobby ,we are waiting for your report back

Got Q3. The same picture and settings. Like print-screen.

Passed today with a 986. Had the eigrp and OSPF sim. 95% of the questions were from 9tut. There were at least 2 that I had not seen. Good luck to all.

get dumps with nuggets free from this following link
wurl. cc/dumps

Passed ICND2 today all question was from 9tut and Nada dump.

Just took the test today – 980/1000 ALL 5 questions were from this page. Thanks 9tuts! Also got Frame Relay, EIGRP and OSPF labs

THERE IS NO NEED FOR ANY DUMPS – just study one book (Wendel or Todd) and the you tube lessons available free for visual knowledge. Along with 9tuts these are enough for 900 and over marks with ease.

But you MUST understand the concepts and not mug up the answer as they change the options and answers

Why the questions are gone?

Is it normal I can’t view the questions?

Hey where are the question?

@all: We had to move all the questions and answers out of 9tut. We can only keep the explanation. You can download the questions and answers at: https://mega.co.nz/#!oIdESYbD!yyu33vygrfKPy4rcmcbV6qW2fxINNoTokuDM3CjA_og

@9tut, with that said, what happens if you paid

@Norm: Currently the questions are still available for premium members. But we will move them in the future.

@9tut Is there a timeframe for when the questions will be moved for premium members? Will we still have access to the labs? If the answer is yes, then it’s definitely still worth the $9. Keep up the great work.

I can’t open the STP Tutorial, I received a message says the website has been updated and I should go back to homepage but the link is not working! any advice?

I can’t see the questions in this page, what is the problem? is that normal? is good to read the explanations but I would like to have the questions

@Safa: We have just fixed that link. Please try again.

@Andreina: We had to move all the questions and answers out of 9tut because of copyrighted issues. We can only keep the explanation. You can download the questions and answers at: https://mega.co.nz/#!oIdESYbD!yyu33vygrfKPy4rcmcbV6qW2fxINNoTokuDM3CjA_og

Thanks Train 🙂

Q1 TO 5 WAS TODAY AT MY EXAM …. 986/1000

http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/5234-5.html

Explanation from the Cisco Site:
http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/5234-5.html
show spantree vlan_id —Shows the current state of the spanning tree for this VLAN ID, from the perspective of the switch on which you issue the command.
Issue the show spantree vlan_id command in order to verify that Switch 15 is the root of all the appropriate VLANs.
• From the output from this command, compare the MAC address of the switch that is the root switch to the MAC address of the switch from which you issued the command. If the addresses match, the switch that you are in is the root switch of the VLAN.
• A root port that is 1/0 also indicates that you are at the root switch.

This is the sample command output:
Switch-15> (enable)show spantree 1
VLAN 1
spanning-tree enabled
spanning-tree type ieee

Designated Root 00-10-0d-b1-78-00

!— This is the MAC address of the root switch for VLAN 1.

Designated Root Priority 8192
Designated Root Cost 0
Designated Root Port 1/0
Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec

Bridge ID MAC ADDR 00-10-0d-b1-78-00
Bridge ID Priority 8192
Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
This output shows that Switch 15 is the designated root on the spanning tree for VLAN 1.
• The MAC address of the designated root switch, 00-10-0d-b1-78-00, is the same as the bridge ID MAC address of Switch 15, 00-10-0d-b1-78-00.
• Another indicator that this switch is the designated root is that the designated root port is 1/0.

In this output from Switch 12, the switch recognizes Switch 15 as the Designated Root for VLAN 1:
Switch-12> (enable)show spantree 1
VLAN 1
spanning-tree enabled
spanning-tree type IEEE

Designated Root 00-10-0d-b1-78-00

!— This is the MAC address of the root switch for VLAN 1.

Designated Root Priority 8192
Designated Root Cost 19
Designated Root Port 2/3
Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec

Bridge ID MAC ADDR 00-10-0d-b2-8c-00
Bridge ID Priority 32768
Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Note: The output of the show spantree vlan_id command for the other switches and VLANs can also indicate that Switch 15 is the designated root for all VLANs.