11 Replies Latest reply: Jun 16, 2019 2:08 AM by alexanderbauer RSS

    question about transparent vtp mode

    jahangir

      i am configuring VTP in this topology.The client vtp switch "D" which is directly  connected with transparent vtp switch "B" cannot communicate  with other client switches "C" and "E" in same vlan  and vice versa. why ?.....someone know the solution?......i am new and doing ccna practice....

       

      Screenshot (128).png

         
        • 1. Re: question about transparent vtp mode
          Ing_Percy

          Hi!

           

          Check if the link between the switches is TRUNK

          Check the configuration of VTP version (Put in all switches the version 2)

          PT is some limited, try put the same domain name VTP in all switches (Also in the switch in transparent mode)

          Create a new vlan in the Switch in server mode and check in another switches if they learn the new vlan

          Attach your PT file


          Best regards!



          • 2. Re: question about transparent vtp mode
            jahangir

            All the trunk links are working

            vtp version is version 2

            all switches are in same domain including transparent.

             

            and as you said i have created new vlan on server switch it has been shared on all client switches...vlans data is correctly advertised ...

            Screenshot (129).png

             

            vlans data is shared in all client switches but the trouble is pc 192.168.10.1  cannot ping the 192.168.10.2 & 192.168.10.3.

            message is request time out..

            similarly pc 192.168.20.1 cannot ping the 192.168.20.2 & 192.168.20.3 pcs

            message is request timeout.

             

            pc 192.168.10.1 & 192.168.20.1 are on the same client switch..

            • 3. Re: question about transparent vtp mode
              Martin

              Are PCs assign to correct VLan X, Y, z ?  Are switchport in access mode and access vlan 10 for PCx and vlan 2 for PCsy?  are trunks between switches ok?

               

              ping between PCs in different vlans will not work without routing. does your L3 switch settup for routing? (not needed if u just ping within same vlans)

               

              if true, SAVE and reboot switches, if that does not work, replace cables and use Cross-over between switches.

               

              VTP may not work as should in PT; for sure VTP pruning does not work (at least in previous versions).

              • 4. Re: question about transparent vtp mode
                Ing_Percy

                Hi!

                 

                Please, attach your PT file to check configurations. Because it can be for many reasons (configuration of intervlan routing or wrong configuration in PCs, switches, etc)

                 

                The switches in PT file supports MDIX feature, not problem with cables

                 

                Regards!

                • 5. Re: question about transparent vtp mode
                  Ing_Percy

                  Hi!

                   

                  I Implemented a similar topology in my PT

                  All switches VTPv2

                  All links between switches: TRUNK

                  sw-transp1.JPG

                  On multilayer switch

                  MLSwitch(config)#vlan 10

                  MLSwitch(config-vlan)#vlan 20

                  MLSwitch(config-vlan)#vlan 30

                   

                  On switch1

                  sw-transp2.JPG

                  Regards!

                  • 6. Re: question about transparent vtp mode
                    jahangir

                    here is attachment

                    • 7. Re: question about transparent vtp mode
                      jahangir

                      VLAN  info is shared among all client switches but the pcs in switch "D" cannot communicate with pcs in switch "C" and switch "E"and vice versa

                      • 8. Re: question about transparent vtp mode
                        jahangir

                        VLAN  info is shared among all client switches but the pcs in switch "D" cannot communicate with pcs in switch "C" and switch "E"and vice versa..

                        • 9. Re: question about transparent vtp mode
                          Ing_Percy

                          Hi!

                           

                          Details

                          cisco1.JPG

                          For intervlan routing you must configure ip addresses on the interface vlan 10 and interface vlan 20 and apply the "ip routing" command

                           

                          cisco2.JPG

                          The PC must be configured correctly.

                           

                          Regards!

                          • 10. Re: question about transparent vtp mode
                            Martin

                            port status down on access switches are not configure completely, see show interface fa0/17 switchport

                            what else do u need there?  u can look up access port config in book or other pt file.

                             

                            vlans are missing - in order to pass traffic in vlan x switch must have such vlan in database and vlan must be allowed to pass over trunk port .

                            not sure if that is PT fault or not,  check trunks - forget about vtp for now, get pings to work then play with vtp later.

                            see show interface trunk - see ports, allowed vlans,

                             

                            ping from vlan x to pc on other end in same vlan x - no need for routing.

                            ping between vlans - need routing on L3 SVIs or router on- stick

                             

                            ---

                            I think u misunderstood transparent mode or changed mode to transparent too soon; transparent switch still needs vlans that will pass over to other switches.

                            • 11. Re: question about transparent vtp mode
                              alexanderbauer

                              Finaly VTP Transparent Mode just say that the Vlan will not be publish over the hole Network like Server Client.
                              You have to configure the manualy on erver Switch.

                              If you would like to have Traffic between von X on Switch A you have to configure on Switch B the same Vlan !
                              Communication between the Vlans with the same ID or or others ID are done by the you default Gateway of the Managment Vlan.

                              Why it sometime not works (when you Setup them) different Version of VTP Version 3 to 1 is not Supported, Different VTP Names,
                              Password on VTP Domain. The must be all the same !
                              Otherwise you have no Layer 2 Cominication.