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    CCNP SWITCH(642-813) Lab – STP+LACP(New)

    By admin | February 12, 2011


    You have been tasked with configuring SwitchB,which has a minimal configuration and has been added to the existing network shown in the topology diagram.

    SwitchA is currently configured correctly.but will need to be modified to support the addition of SwtichB. The VTP and STP configuration modes on SwitchA should not be modified. However SwtichA needs to be the root switch for all vlan instances.

    The two connections between SwitchA and SwitchB need to be configured using a non-proprietary protocol that allows both the lines to be actively forwarding data,with SwtichA controlling activation. Propagation of unnessary broadcasts should be limited using manual pruning on this trunk link.

    For operational and security reasons trunking between SwitchA and SwitchB should uncondition and Vlan1 and other access vlans need to be tagged when traversing the trunk link.

    Requirements for SwitchB




    1. Verification on the Pre-Configuration:

    Switch A:
    a. Check the Router’s interface IP [] [Need to set for the default gateway for Switch B]
    b. Checks the Vlans [1, 11-13, 98-99] already created and identify the Native vlan [99] and it’s Name [TrunkNative]
    c. Check the all the interfaces especially Fast Ethernet 0/3 and 0/4 [Because in many of the people report that those interfaces were already assigned to a vlan98, so we need to remove it from that vlan because we later we will be assigning them to trunk port]

    Switch B:
    a. Check the created vlans. [Only vlan1 created]
    b. Check the SVI is assigned to the vlan1 as noted in the question [, most of the times it is assigned in the exam]

    2. Configuration on Switch B: [Configure Vlan/Assign ports/Make the Switch A ROOT for the STP]


    3. Configuration on Switch A: [Configure Vlan/ Verify the ROOT configured]


    4. Configure the Trunk Ports and Finally, Port-Aggregation [LACP]


    5. Varify the configuration :

    On Access Switch B ping

    1. The copy run start will not work most of the times, do not worry. Leave it.

    2. int port-channel 1

    switchport trunk native vlan 99
    The above command is not needed most of the times. Use it if you gat any vlan mismatch notification on the screen.

    3. SVI is configured most of the times.

    4. switchport trunk encapsulation dot1Q /  This command will not work on the Distribution switch [A]. Assume it is configured on the LAB.

    5. Finally no not try any unwanted/wrong commands on the console. That is not a real switch!

    6. In the packet tracer which I have uploaded, you can configure every thing. But, after 1 minute the Port channel will be down. It is an issue with the Packet Tracer.


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    Topics: 642-813 Exam, CCNP | 4 Comments »

    4 Responses to “CCNP SWITCH(642-813) Lab – STP+LACP(New)”

    1. CCNP SWITCH 642-813 Tips and Tricks | CCNP SWITCH 642-813 Certification Preparation Says:
      February 22nd, 2011 at 5:49 pm

      […] popular sims now are STP+LACP, MLS + EIGRP, AAA dot1x and please notice that the IP addresses, router names may be different (it […]

    2. CCNP SWITCH 642-813 Tips and Tricks | Certificate Exam Says:
      February 23rd, 2011 at 8:52 am

      […] popular sims now are STP+LACP, MLS + EIGRP, AAA dot1x and please notice that the IP addresses, router names may be different (it […]

    3. James55 Says:
      January 24th, 2012 at 7:40 pm

      Hi All,
      In the senario it states
      “However, SwitchA needs to be the root switch for ALL vlan instances.”
      Would that not involve keeping the:
      spanning-tree vlan 1,11-13,21-23,98-99 priority 61440 (or root primary)?
      I’m taken Switch Exam on the 30th January and feedback from someone who’s aced this Lab would be helpful,
      Thanks, James.

    4. James55 Says:
      January 24th, 2012 at 7:47 pm

      Hi All,
      Regards above,Meant to say
      spanning-tree vlan 1,11-13,21-23,98-99 priority 4096 (or root primary)on SwitchA?


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