Spanning Tree Lab Sim
Question:
The headquarter office for a cement manufacturer is installing a temporary Catalyst 3550 in an IDF to connect 24 additional users. To prevent network corruption, it is important to have the correct configuration prior to connecting to the production network. It will be necessary to ensure that the switch does not participate in VTP but forwards VTP advertisements that are received on trunk ports.
Because of errors that have been experienced on office computers, all nontrunking interfaces should transition immediately to the forwarding state of Spanning tree. Also, configure the user ports (all FastEthernet ports) so that the ports are permanently nontrunking.
Requirements:
You will configure FastEthernet ports 0/12 through 0/24 for users who belong to VLAN 20. Also, all VLAN and VTP configurations are to be completed in global configuration mode as VLAN database mode is being deprecated by Cisco. You are required to accomplish the following tasks:
1. Ensure the switch does not participate in VTP but forwards VTP advertisements received on trunk ports.
2. Ensure all non-trunking interfaces (Fa0/1 to Fa0/24) transition immediately to the forwarding state of Spanning-Tree.
3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.
4. Place FastEthernet interfaces 0/12 through 0/24 in VLAN 20.
Answer and Explanation:
Switch>enable
Switch#configure terminal
Switch(config)#interface range fa0/1 – 24
Switch(config-if-range)#switchport mode access (Make all FasEthernet interfaces into access mode)
Switch(config-if-range)#spanning-tree portfast (Enables the PortFast on interface)
Next, we need to assign FastEthernet ports 0/12 through 0/24 to VLAN 20.
By default, all ports on the switch are in VLAN 1. To change the VLAN associated with a port, you need to go to each interface (or a range of interfaces) and tell it which VLAN to be a part of.
Switch(config-if-range)#interface range fa0/12 – 24
Switch(config-if-range)#switchport access vlan 20 (Make these ports members of vlan 20)
Switch(config-if-range)#exit
Next we need to make this switch in transparent mode. In this mode, switch doesn’t participate in the VTP domain, but it still forwards VTP advertisements through any configured trunk links.
Switch(config)#vtp mode transparent
Switch(config)#exit
Switch#copy running-config startup-config
(Notice: Many reports said the copy running-config startup-config didn’t work but they still got the full mark)
Other lab-sims in this site:
LACP with STP Sim
MLS and EIGRP Sim
VTP Lab 2
VTP Lab
AAAdot1x Lab Sim
please guys
post something positive, not some jokes.
may you let us know what are the LABs in exam ?
I am not able able to find the link to download this SIM. Someone please help me out and let me know where it is.
Thanks,
Prabhjit Singh Bagga
Maybe it was not included on the pvuoires versions of CCNA, I’m not quiet sure.And yes you can go directly from CCNA1 to CCNA3 (Switching) yet it not advised since there are some routing terms, functionality and configurations are being used in CCNA3 that you should be familiar with. However they are not heavily tested though.
Interfaces Fa0/13 and Fa0/14 are not in a a specified VLAN. the fact that they are not shown in the VLAN table means that they are most lkleiy set to trunking, and as such they do not belong to any single VLAN.
Are these labs still current?
Regarding requirement:
“It will be necessary to ensure that the switch does not participate in VTP but forwards VTP advertisements that are received on trunk ports.”
I believe that as addition to provided solution, command vtp version 2 also should exist.
can any Body plz provide me Valid dumps of CCNP Switc paper….
m going to attmpt my paper on 29 or 30 ov ths month,,,,
plz help me brothers,,,,,
m waiting fo ur valid dumps…
Mizra Hamzara send your email address to me labite80@yahoo.com
Hello everyone,
I am taking my CCNP Switch exam this Friday (21st). I have read the Cisco Press book twice and also read the Glop dumps.
Are there any other dumps I should look at or is that enough? I saw a couple more dumps like Boomish, Saajan but they all looked the same.
Please let me know. Thanks.
Prabhjit
Cleared my CCNP-SWITCH just now with 9xx/1000. It was very easy. I had 43 questions with 3 labs – AAA, MLS EIGRP, and LACP – STP. Time allotted was 2 hours but I got done in 1 and half hours.
AAA lab – straight forward (could not save config – copy run start)
MLS Eigrp – straight forward (could not save config – copy run start)
LACP – STP – Lil tricky. had to delete access vlan from the fa 0/3 and 0/4 and also native vlans. Had to add vlan 99 as native for trunk links. Also had to create int port-channel 1 and make it a trunk, then the etherchannel went up.
Rest questions were all from Glop dumps. Study dumps very well. I also read the Cisco Press books twice.
Good luck and thanks to certprepare for everything.
I’m giving exam on 26th dec , so can some body give me a link for this simulation please..
Hi guys check my page for latest switch dumps and for sure…
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if anyone can send me complete labs with solution, i will be thankful to you all,
help me in labs and i help you guys…
contact me at mailbomb1234 at gmail dot com
Thank you …
Hey would someone mind sending me this the packet tracer file for this lab? Thanks! marco.massaroni@gmail.com
3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.
Switch(conf)# Spanning-tree Portfast bpduguard Default
1. Ensure the switch does not participate in VTP but forwards VTP advertisements received on trunk ports.
Switch(Conf)# Vtp version 2
Please Add Them To The Conf.
Thanks Alot For The Great Effort u Doing Certprepare :)) Keep IT UP!
umm i Guess i Was Rushed With The BPDUGUARD .. Guess Access Mode Is Enough.. Sorry
3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.
<< The Running Spanning Tree Is RapidST.
So If An Edgeport Received a BPDU Will Lose It's Portfast And Become a Normal STP Port….So i Believe We Should Add BPDU GUARD As i Said Before :D
And Plz Somebody Talks 2 Me B4 i Go Crazy :P
Why is there ‘no shut’ command to ensure the status of the int range is up?
I am sure you will quickly find out that hands-on real world experience is the best way to prepare CCNA in your head to help you pass your CCNA exam!
Spanning Tree Protocol (STP) – Cisco Systems
http://cisconetworkingcenter.blogspot.com/2012/02/spanning-tree-protocol-stp-cisco.html
sorry for the poor english,
Cold i think you ‘re right but not Switch(conf)# Spanning-tree Portfast bpduguard Default,
because this command will be appliyed to all ports on the switch, however at least one port must be set to trunk, in this lab may be it is gig interface. so just do under the interface range fa 0/1 – 24 this command (Spanning-tree bpduguard enable)
@Omar
“You can configure BPDU Guard as a global default, affecting all switch ports with a single command. All ports that have Port-Fast enabled also have BPDU Guard automatically enabled.”
Source: PDF Switching Guide
That Confirms Only Ports Set To Port-Fast Will b Effected By The Global Command Of BPDU Guard.
Thanks For Sharing & Agreement With Me.
@everyone
If running vtp version is 1, then will transparent mode switch forward vtp traffic? I think it has to be version 2 and should we not confirm that the switch is running vtp version 2?
@cold – permanent non-trunking mode means, access port.. i don’t think you need the bpduguard global command that you mentioned. that command is for enabling security (guards against superior bpdu) if “user ports (or portfast ports)” are accidentally plugged into another device that sends bpdu.
vtp version 2 command might need to be added.
GOD DAMN.
I completely agree with masterdeeno.
@masterdeeno & Julián
Wat Do u Think Of The Next Question >>
What two things will occur when an edge port receives a BPDU? (Choose two)
A. The port immediately transitions to the Forwarding state.
B. The switch generates a Topology Change Notification (TCN) BPDU.
C. The port immediately transitions to the err-disable state.
D. The port becomes a normal STP switch port.
Answer: A D
Please Correct Me If Im Wrong.. Thanks For Sharing Ur Knowledge
Can anyone kindly mail me the sybex material for CCNP Switch, router and Tshoot. My email address is aosadeyemi@gmail.com. I did CCNA exams last month 7 I’m ready to conquer any CIsco Exams
@Cold
You may be right with VTP ver 2.
By default, VTP operates in version 1.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_13_ea1/configuration/guide/swvtp.html#wp1035121
Hi Friend,
i am planing to write CCNP switch exam… so, request to u all help me out for this…..
Cold,
You are wrong. The answer is B.
Regards
;)
Cold,
My previous answer was wrong. There are two choices. B and D.
Regards,
Julián
Can anybody help me with valid dumps? am planning to write the CCNP switching exam by the end of this week. email address: ajishola_24@yahoo.com
Julian and Cold – it’s kind of tricky. edge port receiving bpdu means it’ll undergo normal stp port (D answer is correct). having said that, it will not go in forwarding state immediately (answer A is wrong). TCN is generated only when the port is in forwarding state (B is correct – assuming it finished undergoing the port states).
In this LAB:
Note: you don´t need to add vtp version 2 command, because we don’t know if all devices in the network are v2 capable. In server and client switches, V1 and V2 are not interoperable.
* VTP transparent mode V1 and V2 act exactly the same in forwarding VTP.
* If a domain name is set, then the domain name must match for the advertisment to be forwarded.
* If domain name is NULL, then everything is forwarded.
You can test this with real switches or by using GNS3.
Also:
SW1(config-if)#switchport mode ?
access Set trunking mode to ACCESS unconditionally
dynamic Set trunking mode to dynamically negotiate access or trunk mode
trunk Set trunking mode to TRUNK unconditionally
So you don’t need bpdu guard, only switchport mode access.
Hi, There are lots of MCQ questions that are in the certprepare but not included in the latest dump. Are those questions no more included in the exam???
@masterdeeno
i Agree With u :D It’s TRICKY :D, But Plz Go On With Me..
In The Question >>
all nontrunking interfaces should transition immediately to the forwarding state of Spanning tree.
<< Means Rapid Spanning Tree Running ? Agree With That ???
–
An edge port that receives a BPDU immediately loses edge port status and becomes a normal spanning tree port.
–
Source : http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfa.shtml
—
Please Convince Me With Source Links
Thanks For Keeping Up With Me!
I am planning to give switching exam, can one provide valid Switching dupms please..
I am planning to give switching exam, can one provide valid Switching dumps please.. Email : ece124@gmail.com
Thanks in Advance
100% working lab on STP http://www.4shared.com/file/YDx8UncM/SPANNING_TREE_LAB.html?
i have completed ccnp switching 642-813 successfully.i used “pass4sure” dump.
if wanted contact me: theghibha@gmail.com
Hi,
@certprepare, @ ghost thanks u all
@all
In vtp lab 1,
I think ghost left some command, to think ourselves to work this lab correctly.
Even we configure like this, it will not work because although both switches are set to server and client, they did not synchronize vtp information.
Because we should check status of trunk interfaces which is connected between switches by using “sh int trunk” command.
You will see nothing on both switches on upper downloaded link pkt file.
Moreover, we will not complete without adding switchport to their respective vlan and making them switchport mode access.
You will not see this in question but you can see this question on the picture.
Even if the question did not state that we should check this by using
“sh vlan” command.
Here is complete command on both switches and work very well.
Use thes command on both switches to check status
“sh vlan”, “sh vtp status”, “sh interfaces trunk”
We are now start to configure
DLSwitch#conf t
DLSwitch(config)#vtp mode server
DLSwitch (config)#vtp domain cisco
DLSwitch (config)#vlan 20
DLSwitch (config-vlan)#ex
DLSwitch (config)#vlan 21
DLSwitch (config-vlan)#ex
DLSwitch (config)#int vlan 20
DLSwitch (config-if)#no shut
DLSwitch (config-if)#ip address 172.16.71.1 255.255.255.0
DLSwitch (config-if)#ex
DLSwitch (config)#int vlan 21
DLSwitch (config-if)#no shut
DLSwitch (config-if)#ip address 172.16.132.1 255.255.255.0
DLSwitch (config-if)#ex
DLSwitch (config)#ip routing
DLSwitch (config)#int fa 0/1(cable between two switches )
DLSwitch (config-if)#no shut
DLSwitch (config-if)#no switchport mode access
DLSwitch (config-if)#switchport trunk encapsulation dpt1q
DLSwitch (config-if)#switchport mode trunk
DLSwitch(config)#copy running-config startup-config
ALSwitch#conf t
ALSwitch(config)#vtp mode client
ALSwitch(config)#vtp domain cisco
ALSwitch(config)#int fa 0/2
ALSwitch(config-if)#switchport mode access
ALSwitch(config-if)#switchport access vlan 20
ALSwitch(config-if)#exit
ALSwitch(config)#int fa 0/3
ALSwitch(config-if)#switchport mode access
ALSwitch(config-if)#switchport access vlan 21
ALSwitch(config-if)#exit
ALSwitch(config)#copy running-config startup-config
Now you can ping between two pcs which will make u a complete lab.
// we don’t need to configure switchport trunk on ALSwitch because it is automatically trunk auto mode. They will negotiate themselves.
I hope this will helpful for u all, good luck in networking environment.
Moreover my command are here because of certprepare website and ghost’s labs. Thanks u too.