Home > LACP with STP Sim

LACP with STP Sim

March 12th, 2017 in Lab Sim, LabSim Go to comments

Question

You work for SWITCH.com. They have just added a new switch (SwitchB) to the existing network as shown in the topology diagram.

LACP_STP_topology.jpg

RouterA is currently configured correctly and is providing the routing function for devices on SwitchA and SwitchB. SwitchA is currently configured correctly, but will need to be modified to support the addition of SwitchB. SwitchB has a minimal configuration. You have been tasked with competing the needed configuring of SwitchA and SwitchB. SwitchA and SwitchB use Cisco as the enable password.

Configuration Requirements for SwitchA

– The VTP and STP configuration modes on SwitchA should not be modified.
– SwitchA needs to be the root switch for vlans 11, 12, 13, 21, 22 and 23. All other vlans should be left are their default values.

Configuration Requirements for SwitchB

– Vlan 21, Name: Marketing, will support two servers attached to fa0/9 and fa0/10
– Vlan 22, Name: Sales, will support two servers attached to fa0/13 and fa0/14
– Vlan 23, Name: Engineering, will support two servers attached to fa0/15 and fa0/16
– Access ports that connect to server should transition immediately to forwarding state upon detecting the connection of a device.
– SwitchB VTP mode needs to be the same as SwitchA.
– SwitchB must operate in the same spanning tree mode as SwitchA.
– No routing is to be configured on SwitchB.
– Only the SVI vlan 1 is to be configured and it is to use address 192.168.1.11/24.

Inter-switch Connectivity Configuration Requirements:

– For operational and security reasons trunking should be unconditional and Vlans 1, 21, 22 and 23 should tagged when traversing the trunk link.
– The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all vlans. This mode should be done with a non-proprietary protocol, with SwitchA controlling activation.
– Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk link.

Answer and Explanation:

We post the initial configuration of Sw-A & Sw-B here for your reference, you can try solving this sim by yourself before reading the asnwers below:

Initial Configuration (useless lines have been removed)

SwA:
hostname Sw-A
!
vtp mode transparent
!
spanning-tree mode rapid-pvst
!
vlan 98
!
vlan 99
 name TrunkNative
!
interface FastEthernet0/1
 switchport access vlan 98
 switchport mode access
!
interface FastEthernet0/3
 switchport access vlan 98
 switchport mode access
!
interface FastEthernet0/4
 switchport access vlan 98
 switchport mode access
!
interface Vlan1
 no ip address
 shutdown
!
end
Sw-B:
hostname Sw-B
!
vtp mode server
!
spanning-tree mode pvst
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface Vlan1
 no ip address
 shutdown
!
ip default-gateway 192.168.1.1
!
end

Solution

SW-A (close to router)
Note: If Sw-A does not have Vlan 11, 12, 13 we have to create them first with command “SW-A(config)#vlan 11,12,13”
SW-A(config)#spanning-tree vlan 11-13,21-23 root primary

SW-A(config)#vlan 21
SW-A(config-vlan)#name Marketing
SW-A(config-vlan)#exit

SW-A(config)#vlan 22
SW-A(config-vlan)#name Sales
SW-A(config-vlan)#exit

SW-A(config)#vlan 23
SW-A(config-vlan)#name Engineering
SW-A(config-vlan)#exit
SW-A(config)#interface range fa0/3 – 4
SW-A(config-if-range)#no switchport mode access
SW-A(config-if-range)#no switchport access vlan 98 (These two commands must be deleted to form a trunking link)
SW-A(config-if-range)#channel-group 1 mode active
SW-A(config-if-range)#channel-protocol lacp
SW-A(config-if-range)#no shutdown
SW-A(config-if)#interface port-channel 1
SW-A(config-if)#switchport mode trunk
SW-A(config-if)#switchport trunk native vlan 99 //this command will prevent the “Native VLAN mismatched” error on both switches
SW-A(config-if)#switchport trunk allowed vlan 1,21-23
SW-A(config-if)#no shut

Note: When you apply commands under “interface port-channel 1”, the same commands will be automatically applied to the physical member interfaces (of port-channel 1) so you don’t need to type them under physical member interfaces again.

——————————————————————————————–

SW-B (far from router)
SW-B(config)#vlan 21
SW-B(config-vlan)#name Marketing
SW-B(config-vlan)#exit

SW-B(config)#vlan 22
SW-B(config-vlan)#name Sales
SW-B(config-vlan)#exit

SW-B(config)#vlan 23
SW-B(config-vlan)#name Engineering
SW-B(config-vlan)#exit
SW-B(config)#vlan 99
SW-B(config-vlan)#name TrunkNative // not necessary to name it but just name it same as SwitchA
SW-B(config-vlan)#exit
SW-B(config)#interface range fa0/9 – 10
SW-B(config-if-range)#switchport mode access
SW-B(config-if-range)#switchport access vlan 21
SW-B(config-if-range)#spanning-tree portfast
SW-B(config-if-range)#no shutdown
SW-B(config-if-range)#exit

SW-B(config)#interface range fa0/13 – 14
SW-B(config-if-range)#switchport mode access
SW-B(config-if-range)#switchport access vlan 22
SW-B(config-if-range)#spanning-tree portfast
SW-B(config-if-range)#no shutdown
SW-B(config-if-range)#exit

SW-B(config)#interface range fa0/15 – 16
SW-B(config-if-range)#switchport mode access
SW-B(config-if-range)#switchport access vlan 23
SW-B(config-if-range)#spanning-tree portfast
SW-B(config-if-range)#no shutdown
SW-B(config-if-range)#exit

SW-B(config)#vtp mode transparent

SW-B(config)#spanning-tree mode rapid-pvst //Same as Sw-A

SW-B(config)#ip default-gateway 192.168.1.1 (you can get this IP from SW-A with command show cdp neighbour detail) // not sure about this command because the question says “No routing is to be configured on SwitchB”.

SW-B(config)#interface vlan 1
SW-B(config-if)#ip address 192.168.1.11 255.255.255.0
SW-B(config-if)#no shutdown
SW-B(config-if)#exit

SW-B(config)#interface range fa0/3 – 4
SW-B(config-if-range)#channel-group 1 mode passive //mode passive because “SwitchA controlling activation”
SW-B(config-if-range)#channel-protocol lacp
SW-B(config-if-range)#no shutdown

SW-B(config-if)#interface port-channel 1
SW-B(config-if)#switchport trunk encapsulation dot1q
SW-B(config-if)#switchport mode trunk
SW-B(config-if)#switchport trunk native vlan 99 //this command will prevent the “Native VLAN mismatched” error on both switches
SW-B(config-if)#switchport trunk allowed vlan 1,21-23
SW-B(config-if)#no shut

Note: For Sw-B we have to set the 802.1q trunking protocol (switchport trunk encapsulation dot1q) before converting it into a trunk because it is a 3500 series (or higher) switch which supports both ISL and 802.1Q and we have to explicitly set which trunking protocol to be used. Sw-A is a 2900x series (or lower) switch and does not support ISL trunking protocol (802.1Q is the only supported trunking protocol) so we can apply “switchport mode trunk” directly.

———————————————————

Some guidelines for configuring SwitchA & SwitchB:

Configuration Requirements for SwitchA

– The VTP and STP configuration modes on SwitchA should not be modified.
– SwitchA needs to be the root switch for vlans 11, 12, 13, 21, 22 and 23. All other vlans should be left are their default values
SW-A(config)#spanning-tree vlan 11-13,21-23 root primary

Configuration Requirements for SwitchB

– Vlan 21, Name: Marketing, will support two servers attached to fa0/9 and fa0/10
– Vlan 22, Name: Sales, will support two servers attached to fa0/13 and fa0/14
– Vlan 23, Name: Engineering, will support two servers attached to fa0/15 and fa0/16
– Access ports that connect to server should transition immediately to forwarding state upon detecting the connection of a device.
vlan …
name …
(VLANs must be created on both switches if not exist)
interface range fa0/x – y
switchport mode access
switchport access vlan
spanning-tree portfast
– SwitchB VTP mode needs to be the same as SwitchA. vtp mode transparent
– SwitchB must operate in the same spanning tree mode as SwitchA. spanning-tree mode rapid-pvst
– No routing is to be configured on SwitchB.
– Only the SVI vlan 1 is to be configured and it is to use address 192.168.1.11/24.
interface vlan 1
ip address 192.168.1.11 255.255.255.0

Inter-switch Connectivity Configuration Requirements:

– For operational and security reasons trunking should be unconditional and Vlans 1, 21, 22 and 23 should tagged when traversing the trunk link.
– The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all Vlans. This mode should be done with a non-proprietary protocol, with SwitchA controlling activation.
SW-A(config)#interface range fa0/3 – 4
SW-A(config-if)#no switchport mode access
SW-A(config-if)#no switchport access vlan 98
Note: Two above commands must be deleted first to form a trunking link.

Although the first requirement asks us to configure trunking but we can ignore this task because we only need to configure trunking under their Port-channel (in the next task)

– The two trunks between SwitchA and SwitchB need to be configured in a mode that allows for the maximum use of their bandwidth for all Vlans:
SW-A(config)#interface range fa0/3 – 4
SW-A(config-if)#channel-group 1 mode active
SW-A(config-if)#channel-protocol lacp
SW-A(config-if)#no shutdown
– Trunking should be unconditional and Vlans 1, 21, 22 and 23 should tagged when traversing the trunk link:
SW-A(config-if)#interface port-channel 1
SW-A(config-if)#switchport mode trunk
SW-A(config-if)#switchport trunk native vlan 99 //this command will prevent the “Native VLAN mismatched” error on both switches
SW-A(config-if)#no shut
—————————————
SW-B(config)#interface range fa0/3 – 4
SW-B(config-if)#channel-group 1 mode passive
SW-B(config-if)#channel-protocol lacp
SW-B(config-if)#no shutdown
SW-B(config-if)#interface port-channel 1
SW-B(config-if)#switchport trunk encapsulation dot1q
SW-B(config-if)#switchport mode trunk
SW-B(config-if)#switchport trunk native vlan 99 //this command will prevent the “Native VLAN mismatched” error on both switches
SW-B(config-if)#no shut

– Propagation of unnecessary broadcasts should be limited using manual pruning on this trunk link. SW-A(config)#interface port-channel 1
SW-A(config-if)#switchport trunk allowed vlan 1,21-23
—————————————
SW-B(config)#interface port-channel 1
SW-B(config-if)#switchport trunk allowed vlan 1,21-23
Note: When configure this command under Port-channel 1, the same command will be applied to physical member interfaces (of port-channel 1) so you don’t need to type them under physical member interfaces again.

Some notes for this sim:
+ You should check the initial status of both switches with these commands: show vtp status (transparent mode on switchA and we have to set the same mode on switchB), show spanning-tree [summary] (rapid-pvst mode on switchA and we have to set the same mode on switchB), show vlan (check the native vlan and the existence of vlan99), show etherchannel 1 port-channel and show ip int brief(check if Port-channel 1 has been created and make sure it is up), show run (to check everything again).
+ When using “int range f0/x – y” command hit space bar before and after “-” otherwise the simulator does not accept it.
+ You must create vlan 99 for the switchB. SwitchA already have vlan 99 configured.
+ At the end, you can try to ping from SwitchB to RouterA (you can get the IP on RouterA via the show cdp neighbors detail on SwitchA), not sure if it can ping or not. If not, you can use the “ip default-gateway 192.168.1.1” on SwitchB.
+ The name of SwitchA and SwitchB can be swapped or changed so be careful to put your configuration into appropriate switch.

We hope with this information our candidates can find the best solution in the exam. If you learn anything new about this sim please share with us!

Other lab-sims in this site:

MLS and EIGRP Sim
VTP Lab 2
VTP Lab
Spanning Tree Lab Sim
AAAdot1x Lab Sim

Comments
Comment pages
1 48 49 50 52
  1. Zhezburg
    May 3rd, 2017

    mail mir199191 @ gmail.com

  2. Switch-Devil
    May 3rd, 2017

    Passed my 300-115 on 29 April 2017. Got 825/1000.
    Labs: dot1x, Etherchannel+STP, VTP2, HSRP
    Drag&Drop: CDP/LLDP, PVST/RSTP/MST, Portfast/BPDUfilter/BPDUguard
    Questions from dumps: 26 (191 from Pass4sure, Actual-Exam)
    Questions out of dumps: 12
    Total Qs: 38

  3. Plasticdad
    May 3rd, 2017

    This lab has been frustrating. I get to the point where I’m configuring the range commands, I do the “no” commands to clean up fa0/3 and 4, but then the next few interface range commands just don’t work. I’;m not sure why there are 5 fields to fill in when it’s just for putting them in a channel-group. Any ideas?

  4. Anonymous
    May 4th, 2017

    Can someone please send the latest dump to “gtsmooth518 at gmail dot com” Thanks!

  5. Julia Greene
    May 4th, 2017

    Pass4surekey consistently prepares students and professionals for Cisco CCNP through excellent 300-115 exam material. It offers a well-designed CCNP material. Buy Now from http://www.pass4surekey.com/exam/300-115.html and get special discount.

  6. Anonymous
    May 6th, 2017

    can you share latest dumps please ? !

    samspam at gmx dot com THANKS !

  7. Anonymous
    May 6th, 2017

    Please send the new dump for me, please
    v.f.kayan @ gmail.com

  8. Anonymous
    May 7th, 2017

    Can someone please send the latest dump to “test dot test4121 at gmail dot com” Many Thanks!

  9. zahid ismail
    May 7th, 2017

    Hello

    Did anyone got the latest dumps?

  10. Anonymous
    May 7th, 2017

    how can i download lab simulation

  11. NAVEEN
    May 8th, 2017

    HEY guys do anyone knows which simulation qstns comes for switch 300-115 exam ? only one sim will be asked or all 3 sims will be asked?

    pls advice?

  12. Solomon
    May 8th, 2017

    I passed with 825 scores.

    SIM: AAA, LACP

    Some new questions, around ~10
    I couldn’t remember exactly now :(
    1. Multi choice about udld aggressive mode
    2. Multi choice about action of DAI with invalid IP-to-MAC
    (Intercept, Drops, Log)
    3. Multi choice about Radius server response
    (Accept, Reject, Challenge )

  13. Switch-Devil
    May 8th, 2017

    @PlasticDad…do not configure the commands under “interface range”; just configure them under individual interfaces and you will get it right.
    Moreover, in the exam, it is mentioned that all the commands must be configured under the physical interfaces. Hence, you need to configure every think under the individual interfaces and the same configuration will be reflected under the portchannel interface.
    I am sure everything is clear here.

  14. Muste
    May 10th, 2017

    Please send me the latest dump files
    {email not allowed}

  15. zahid ismail
    May 10th, 2017

    anyone can send me latest dump

    zahidismail gmail com

  16. Anonymous
    May 10th, 2017

    hi all
    please send me the latest dump file
    superiperfabietto gmail.com

  17. nav
    May 10th, 2017

    Please send me valid dumps at navneet018 @ gmail .com

  18. Pratik
    May 14th, 2017

    Pleaseshare latest dumps {email not allowed}

  19. Pratik
    May 14th, 2017

    Pleaseshare latest dumps pratik . r . khare @ gmail.com

  20. Sauer
    May 16th, 2017

    I am about to do my first try on cisco 300-115, kindly somebody share me the last dumps alvin0222@hotmail dotcom

  21. Sauer
    May 16th, 2017

    i meaned my third!

  22. parth19
    May 18th, 2017

    I passed with 842/100 score !

    Lab : LACP and Dot1x . Simlet : HSRP
    drag drop : 3 , cdp/lldp , pvst+/rapid pvast/mst , portfast/bpduguard/bpdufilter

    total 47 questions. Most of the questions i found new ! I tried my best to answer the question.
    Also in LACP lab , after configuring all the things , Port Channel shows down !! i do not know why and that makes me frustrate as it took almost one and half hour to troubleshoot ! but i could not do it and i have only half hr to go and 24 questions remaining with one lab so i just did whatever they asked and save the config and moved ahead with other question !

    i do not remember the topics of new questions but some of are from port security , udld , switch stacking and ether channel.

    It was very surprising for me that i cleared the exam as i had issues in the Lab and other questions also went not that much good !

    But at the end , i got the result what i want !!!

    Good Luck !!

  23. parth19
    May 18th, 2017

    I passed with 842/1000 score !

    Lab : LACP and Dot1x . Simlet : HSRP
    drag drop : 3 , cdp/lldp , pvst+/rapid pvast/mst , portfast/bpduguard/bpdufilter

    total 47 questions. Most of the questions i found new ! I tried my best to answer the question.
    Also in LACP lab , after configuring all the things , Port Channel shows down !! i do not know why and that makes me frustrate as it took almost one and half hour to troubleshoot ! but i could not do it and i have only half hr to go and 24 questions remaining with one lab so i just did whatever they asked and save the config and moved ahead with other question !

    i do not remember the topics of new questions but some of are from port security , udld , switch stacking and ether channel.

    It was very surprising for me that i cleared the exam as i had issues in the Lab and other questions also went not that much good !

    But at the end , i got the result what i want !!!

    Good Luck !!

  24. JoeJoe
    May 20th, 2017

    Hi guys, I might as well ask, can someone please send me the latest dumps? {email not allowed}

  25. JoeJoe
    May 20th, 2017

    Hi guys, I might as well ask, can someone please send me the latest dumps? twelfty @ gmail. com

  26. John
    May 21st, 2017

    Guys, Appreciate if anyone can help and send the latest dump ? itmann at out look dot c-o-m.
    Thanks

  27. Aloha
    May 21st, 2017

    Passed yesterday with 930

    Lab : LACP and Dot1x
    I have dump 262q. There are around 5-6q (GLBP, mac address etc) that cannot be found in dump. Please follow below link;

    https: //www. 4shared.com /office /CEP4tjUnei /300-115 .html

    Let me know if you cannot download, my first time upload

  28. Anonymous
    May 22nd, 2017

    @aloha

    Link not working =)

  29. John
    May 22nd, 2017

    Dear Aloha,

    I try not link was not working. or please fwd me to itmann at out look dot c-o-m.

    Thanks,
    Zulfaqar Khan

  30. Rinja
    May 22nd, 2017

    Hey Guys,
    if someone can send me the latest Dump that would be great.

    rin-ja at web dot de

    Thank you

    @aloha link isn’t working :(

  31. Raj
    May 22nd, 2017

    @aloha

    That dump with 262q is valid?

    Thanks!

  32. Anonymous
    May 22nd, 2017

    where can I download this lab sim file ?

  33. sauer
    May 22nd, 2017

    Can anybody kindly share the three lastest drag and drop questions, and confirm what is the newest dumps, next week i am taking me third chance in CISCO 300-115

  34. firz3n16
    May 22nd, 2017

    @Aloha

    Man, can u please send me your dump, please? u u r @ hotmail . de

  35. Anonymous
    May 22nd, 2017

    Aloha’s link works just remove blank spaces !

    Thanks & congrats Aloha !

  36. Anonymous
    May 22nd, 2017

    I think everybody would appreciate vcp file , if you can upload Aloha :) please do

  37. Raj
    May 22nd, 2017

    the link works to me too.

    Thanks @Aloha

  38. mrbean
    May 22nd, 2017

    Hey guys… I’ve converted the pdf from aloha to VCE…
    The questions with drag and drop and the LAB’s are of course not properly shown… but the rest is okay :)
    http: //bit. ly /300-115_262q
    (just remove spaces)

  39. Anonymous
    May 23rd, 2017

    great stuff mrbean, thank you !

  40. John
    May 23rd, 2017

    Dear mrbean,

    I downloaded the dump thanks but can you please confirmed that dump are still valid. and which lab i need to practice more please assit me for that

    Regards,
    John

  41. Anonymous
    May 23rd, 2017

    Mr. Bean – Thank You!!!

  42. Anonymous
    May 23rd, 2017

    mrbean thanks

  43. mrbean
    May 23rd, 2017

    You’re welcome guys.. you can share it if you want :)

    John, I’ve not yet made the exam but Aloha has passed his exam with them..
    So I believe if you dominate this 260 questions, at least the labs he has done and a bit self study you should be ready to go :)
    His Labs were LACP and dot1x… good luck and give us feedback :)

  44. Raj
    May 23rd, 2017

    Nice work MrBean!! Thanks!

  45. Kyaw Zin
    May 24th, 2017

    Dear All.
    Could you send to me update dump for switch 300-115. First time, i already failed this exam. i want to make sure this time. Please help me.

  46. Anonymous
    May 24th, 2017

    mr bean you are our hero !! :)

  47. Aloha
    May 24th, 2017

    262q is still valid. As I stated, 4-6 questions cannot be found in an exam on this dump.

    PS. Why you guys like VCE file? PDF is a lot easier to open (everyone should have adobe/pdf opener on laptop/pc), no need to install VCE software.

Comment pages
1 48 49 50 52
  1. No trackbacks yet.