when you enable VTP Pruning on the VTP server all the clients in the VTP domain will automatically enable VTP Pruning. I would like to remove following setting with out defining any other domain name. Enter configuration mode and use the following commands to enable client mode. Options. A VTP version 2-capable device can operate in the same VTP domain as a device running VTP version 1 if version 2 is disabled on the version 2-capable device (version 2 is disabled by default). Note: Before you delete the file from NVRAM, it is recommended to make a backup of the file. Thank in advance. In this way you will be configuring vlans. Like Z0nk said above, VTP should not affect the forwarding of any vlan. 1. 한 대의 VTP 서버에서 새로운 VLAN을 설정하면 해당 VLAN은 도메인의 모든 스위치를 통해 배포됩니다. It is the default mode of VTP on most series of switches. 01-28-2016 01:36 PM. If the switch has a trunk connection to a VTP domain, the switch learns the domain name from the VTP server in the domain. Like Liked Unlike Reply. VTP server is the default mode. Configure the VTP administrative-domain name. (VLAN IDs 1 and 1002 to 1005 are automatically created and cannot be removed. All switches inside the same VTP domain share their VLAN information with each other. Do not enter the vtp file file_name command on a switch that has a redundant supervisor engine. Mini-lab – Configuring VTP. The configs for both switches would be: Switch 1 . load the boot loader from ROM. Download the VTP database from the VTP server in the new domain. Changing the VTP domain name always resets the revision number to 0. Note When the switch boots, if the VTP domain name and VTP mode in the startup-config and vlan. 00b8. In the VTP Password field, enter a password (optional). Refer to the exhibit. A VTP domain (also called a VLAN management domain) consists of one switch or several interconnected switches under the same administrative responsibility sharing the same VTP domain name. A VTP domain (also called a VLAN management domain) consists of one switch or several interconnected switches or switch stacks under the same administrative responsibility sharing the same VTP domain name. With it, you need to add or remove VLAN information only on the VTP Server. VTP pruning is a domain wide configuration. This example shows how to configure a VTP password: Switch#vtp password WATER Setting device VLAN. 1. You cannot use the vtp file command to load a new database. dat file and config. If state=absent and no vtp_password is provided, it remove the current VTP password. so either it cosmetic bug (not effect the VTP) or it not, after you match the ver in both SW and config one server and other client. One of VTP characteristics is that a VTP Server (A) can also act as a Client VTP, as a result, if another VTP Server (B) - belonging to the same VTP domain - is added by mistake or by an attacker. I have been practicing for the BCMSN test and was working with the different VTP confiuration options. By default, Cisco switches do not have a VTP domain name assigned. Depending on the role, switches functionalities are different. Beginning with Release 5. I currently have VTP running on my network. Having two VTP servers is not a problem at all. 3 and various 3550 and 3750 switches. "If I add a VLAN to the Server, it doesn't appear on this Client. A VTP version 2-capable device can operate in the same VTP domain as a device running VTP version 1 if version 2 is disabled on the version 2-capable device (version 2 is disabled by default). This will revert the revision number to 0 and when added to the network will. 01-28-2016 01:36 PM. To keep the VTP configuration with VTP client mode after the switch restarts, you must first configure the VTP domain name before the VTP mode. no vtp domain < domain name > command does not work on 7609 will try in some other switch and update. 한 대의 VTP 서버에서 새로운 VLAN을 설정하면 해당 VLAN은 도메인의 모든 스위치를 통해 배포됩니다. 6-4: VLAN Trunking Protocol. The VLANs learned from the VTP Server are held in vlan. dat file and reload, or change the VTP domain name to something else, and then change it back. Best to turn off dtp as well as vtp. Dear Rajeev, you can change vtp mode to server and you can delete all vlans, and exec mode: delete flash:vlan. Configuring VTP • FindingFeatureInformation,page1 • PrerequisitesforVTP,page1 • RestrictionsforVTP,page2 • InformationAboutVTP,page2 • HowtoConfigureVTP,page11If the device is in VTP server or VTP transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN database. Select the correct VTP mode and version. A switch can be in only one domain. See the€ Backup and Restore of vlan. ; All network devices in a VTP. adding another VLAN anywhere in the VTP domain creates a VLAN on that device that is not running. Change switch to VTP Server and remove password from VTP domain. 1400=00d0. VTP pruning is a domain wide configuration. VTP domain name should be changed to a fake name (a nonexistent vtp domain), and then change the VTP domain back to original name. VLAN 1 is the default VLAN and is created during system initialization. dat file, especially for the VTP server systems. The remove keyword removes prune-eligible VLANs from the current pruned VLAN list. Quick output: running-configs do not have the vtp configurations. Also when you are in server mode, you can still have no config for the domain name if you did not have any and you were in transparent mode before: NMS-CAT6K-B (config)#vtp mode. dat" followed by a reload would do it, but now I found that I was NOT quite correct! When a switch is not connected to any other switches, removing "vlan. VTP pruning takes effect several seconds after you enable it. A network device can be configured to be in only one VTP domain. VTP는 대부분의 Cisco Catalyst Series 제품에서. To better understand the true value of VTP, consider an example network with 100 switches. Chinese;Hello, I've just gone to a site an they have setup VTP on their switches and are having VTP mismatch errors, I can see why as they domain names are all wrong. For best practice just use global config. By separating STP domain, I think I can: for example, configure "Looped-Area#1" uses PVST+ while "Looped-Area#2" uses RSTP. The Catalyst 3850 configuration also has a default route for. So it's listening to VTP frames and when the first frame comes, the switch accepts VTP domain name from it, updates it's VLAN database and works as VTP server. 따라서 모든 위치에서 동일한 VLAN을 설정할 필요가 없습니다. Hi, As you can't delete the VTP domain name. or . My personal preference (and goal) is to remove the VTP domain if possible. I have a customer who configure all the distribution switches as VTP server (usually 4 per VTP domain) and he hasn't had any problem for several years. When you save VTP mode, domain name, and VLAN configurations in the switch startup configuration file and reboot the switch, the. Is it possible to setup multiple VTP Domains (seperate domain. 1. dat file. Eg: all switches in VTP domain cisco, will be updated on VLANs created or deleted on any switches (VTP server), within that VTP domain. Servers and clients transmit information through trunks to other attached switches and receive updates from those trunks. I need to know any way for delete vtp domain name but not reload switch. I thought at first just remove "vlan. A VTP domain is a group of switches that share. ). ) from a single switch in an enterprise network. If it was the case I would have tried to (Of course if the business constraints allow it as i twill impact)=>. If you are using VTP transparent mode then the vlan information is also stored in the running config as well. VTP servers advertise their configuration to the VTP clients in the same VTP domain. Configure the switch with the name of the new management domain. The second example depicts how to configure a VTP network using the domain name ‘CisCo’, a password of ‘Password’ and by making SW2 transparent. المجال VTP Domain. If the device is in VTP server or VTP transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN database. dat you would erase all your configured vlans on the switch if it is on server or transparent mode, and this would be harmful. Please rate and mark as an accepted solution if you have found any of the information provided useful. 3. Configure a different native VLAN on all new switches that are configured as VTP clients. If operationally possible change the switch to transparent mode,you will then need to delete the vlan. Right-click the VTP Domain or the device, and select Display View. This might happen if you allow more than one device to be a VTP server and. ) With VTP versions 1 and. This switch is becoming Primary server for vlan feature in the VTP domain VTP Database Conf Switch ID Primary Server Revision System Name. " line from the file manually and upload the modified file to the switch startup config. A switch can be configured only in one VTP domain. To disable VTP, enter the set vtp domain domain name mode transparent command. فكرة هذه الخدمة هي أن تقوم بتنظيم جميع السويتشات تحت نطاق واحد بأسم نطاق معين و تفيد ايضاً عندما نقوم بعمل اكثر من شبكة و تكون هذه الشبكة تم عملها على أكثر من سويتش في نفس الشبكة و نفس النطاق سنقوم بتفعيل. Because VLAN IDs 1 to 1005 are global in the VTP domain and can be defined on other network devices in the VTP domain, you can use only extended range VLANs with subinterfaces in VTP client or server mode. If the Domain Name doesn't match, then - The VTP Server, Client or Transparent (V1) Switch would ignore the Summary Advertisement - The Summary Advertisement wouldn't be flooded through its Trunk Ports(Optional) Specifies the MAC address to remove from the table. Hi, if you take a new switch from the box and coonect it to your network, it's using the default VTP values: VTP mode server, no VTP domain configured. I thought at first just remove "vlan. vtp domain domain-name. This VTP server sends an advertisement, across the domain, every 5 minutes or whenever a change is made in the VLAN database. A VTP version 2-capable device can operate in the same VTP domain as a device running VTP version 1 if version 2 is disabled on the version 2-capable device (version 2 is disabled by default). Each network device can be in only one VTP domain. 4. For information on configuring VTP, see Chapter 22, “VLAN Trunking Protocol (VTP). VTP domain is a collection of switches set with the same VTP domain string. vtp domain "domain name" vtp version 3 vtp mode off int g1/1/1 (e. This VTP server sends an advertisement, across the domain, every 5 minutes or whenever a change is made in the VLAN database. You use the interface configuration command mode to define the port membership mode and add and remove ports from a VLAN. 8. A quick test to prove it. If I reload the server switch, somehow the switch would grab all the vlan information from a VTP client switch and all the vlans are restored. Emita el siguiente comando para configurar el modo VTP: Switch (vlan)# vtp {client | server | transparent} Emita el comando exit para salir del modo de configuración de VLAN. org VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x2A 0x0B 0x2C 0x0D 0xAE 0x80 0xCA 0x89. Without VTP, if you want to create a VLAN on each. 00b8. 1(1), the server mode is the default mode. Restrictions for VTP Supervisor engine redundancy does not support nondefault VLAN data filenames or locations. ). An administrator adds a new VLAN definition. Hi Cap, by default domain 1 vlan users cannot able to communicate domain 2 vlan users as the domain name varies, since you specified the ip route command saying that domain 2 vlan users should access internet which is connected in domain 1 vlan, it works, but if u specify like that domain 1 vlan users can communicate domain 2 vlan. If the VTP mode or domain name in the startup configuration does not match the VLAN database, the domain name and VTP mode and configuration for the VLAN IDs 1 to 1005 use the VLAN database information. Switches share VTP information only inside the domain. One VTP domain name per switch is allowed. no int vlan XXX. The vtp mode transparent command disables VTP from the domain but does not remove the domain from the device. VTP server mode requires a domain name. Given your setup, I'd check to make sure VTP pruning isn't trolling you. If you don't want to use VTP pruning, but to perform the pruning manually, you can manually remove VLANs from a trunk connection with the switchport trunk allowed. With this config, the switches trunk. vtp domain domain-name. Switch_1#conf t Switch_1(config)#vtp domain yourdomain Switch_1(config)#vtp mode server Switch_1(config)#vtp password yourpassword Switch_1(config)#vtp version 2 . •- Change the VTP mode to server. Some VTP commands you can run in exec mode and don’t need to be in global config. Switch#reload. Anyway what i noticed was that all their switches were setup as server mode and in a VTP domain. To add (config)# vlan xxx (config-vlan)# name XXX. Consider the following example network: Removing VTPv1/VTPv2 from a network is easy. Step 4: vtp mode server. The only caveat is the VTP Pruning - if you are using it, you must first deactivate it on any VTP Server switch using the no vtp pruning command. 2. res. Now i need completely remove VTP from my network without stopping network traffic and tearing network connectivity. VTP clients behave the same way as VTP servers, but you cannot create, change or delete VLANs on a VTP client. Each network device can be in only one VTP domain. If the switch is in VTP server or VTP transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN database. Layer 2 trunk interfaces, Layer 2 port channels, and virtual port channels (vPCs) support VTP functionality. B. Even though the file can be copied to any location, it can only be read. By default, the switch is in VTP no-management-domain state until it receives an advertisement for a domain over a trunk link or until you configure a domain name. All switches in the same VTP domain will share the same VTP domain name and VTP password, if one is configured. Changing a switch's VTP mode to Transparent from Client will not need a reload for it to take effect as the VLAN information is stored in the vlan. Configure the correct VTP domain name and password on the new switch. † Before you can create a VLAN, the switch must be in VTP server mode or VTP transparent mode. 2) Manually add all the current vlans running in your vtp domain to this switch. A VTP domain is made up of one or more interconnected network devices that share the same VTP domain name. Usage Guidelines. Once the VTP client switches have been updated with the new VTP server domain and password details, they will start receiving VLAN updates from the VTP server switch. If operationally possible change the switch to transparent mode,you will then need to delete the vlan. Mark as New; Bookmark; Subscribe; Mute;Step 2 no vlan vlan-id: Remove the VLAN by entering the VLAN ID. vtp domain domain-name. 1q trunking 1. [add | remove. VTP server and VTP domain. Saying that it could be a management VLAN issue. I plan to do 1 switch stack every week. I encountered the same issue and the resolution for removing the VTP Domain for Catalyst 4500 switches is. VTP domain name must be the same; 2. VTP servers advertise their VLAN configurations to other devices in the same VTP domain and synchronize their VLAN configurations with other devices based on advertisements. If the device is in VTP server or VTP transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN database. Use. What should the network administrator do to ensure the new switch exchanges VTP information with the other switches in the VTP domain? Configure the correct VTP domain name and password on the new switch. The configuration shows commands entered by a network administrator for inter-VLAN routing. The configuration revision is still the same in the rest of the clients, even if the server crashes. A VTP domain is defined by all switches that share the same VTP Domain name. This changes the config revision number back to 0 and when the current VTP server has a higher revision. All switches operating in VTP server or client mode under the same administrative responsibility must be configured with the same domain name. Once a VTP server is configured, any changes made (such as adding or removing VLANs) will be propagated. VTP Domains: • VTP is organized into management domains or areas with common VLAN requirements • A switch can belong to only one VTP domain • Switches in different domains don’t share the VTP information VTP Modes: Server, Client and Transparent Server: can create, delete, modify and advertise VLAN informationTo join to the VTP domain use the foollowing commands: (config)#vtp mode client --- or server (config)#vtp domain "domainname" --- !case sensitive. VTP version 1 and version 2 support only normal-range VLANs (VLAN IDs 1 to 1005). Step 3 Select Reports > VLAN Report from the menu. Delete vlan. SwitchB# configure terminal. If you remove the switch from the VTP domain, then VTP will not be able to update this file and it will remain exactly as it was. If the domain has a single VTP server and it crashes, the best and easiest way to restore the operation is to change any of the VTP clients in that domain to a VTP server. show vtp status. 1/config/. Through VTP, the user can synchronize VLAN name, VLAN ID, and other VLAN information; with Cisco switches inside the same domain. config mode: vtp mode server. Community. Trunking is up as command on client switch. Vtp information is used during dtp between switches and if the configuration does not match the trunk won't form. EN US. Step 6: show vtp status. The name can be 1 to 32 characters. Some of our sites have VTP Domain. This reduces the need to configure the same VLAN everywhere. To verify the VTP mode use: switch# show vtp status. It will be reset and changed to zero. Create VLANs¶. The pruning-eligibility configuration applies globally to all trunks on the switch. VTP messages are exchanged between switches within a common VTP domain. VTP enables the management of VLAN configuration (Vlan addition, deletion, etc. By default, the switch is in the VTP. This section provides some guidelines for the configuration of VTP in the network. Note You cannot clear the domain name. If you. 1400=00d0. The vtp mode transparent command disables VTP from the domain but does not remove the domain from the device. After that, we will set vtp password as abc123, vtp version 2. Although you can't have multiple VTP domains on a single switch, you can connect two switches in different domains. A switch in off VTP off mode functions the same as a VTP transparent device except that it does not forward VTP advertisements on trunk ports. You actually have to delete the file: Once you've done that, you should be good. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Now I find only this way to delete (delete. dat file but that is not a feasible. vtp mode. VTP sends messages between trunked switches to maintain VLANs on these switches in order to properly trunk. In VTP server mode, you create, modify and delete VLANs and specify other configuration parameters such as the VTP version for the entire VTP domain. The vtp mode transparent command disables VTP from the domain but does not remove the domain from the device. VTP is a Layer 2 messaging protocol that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of VLANs within a VTP domain. 2) Deleting the switch Vlans. Backup and Restore the vlan. Example: Device(config)# end: Returns to privileged EXEC mode. Because VLAN IDs 1 to 1005 are global in the VTP domain and can be defined on other network devices in the VTP domain, you can use only extended range VLANs with subinterfaces in VTP client or server mode. Fa0/24 1-4094. The name can be 1 to 32 characters. VTP pruning allows a switch to dynamically indicate to a remote switch on the other side of a trunk that the traffic within a [inactive] VLAN not. mydomain. I usually set the above filter, and then allow pruning to remove any vlan that is included in the above range (thus maintaing the desired security), but not effectively used. Vtp mode transparent Vtp domain diffrentDomainName Vtp domain putDomainBackToOriginal Vtp mode client Vtp password reenterCorrectPassword Now do a show 'show vtp status' revision should be zero. One can also reasonably deploy VTP for any number of valid reasons. 02-19-2003 02:43 PM. dat file. A switch can be in only one domain. "vtp domain. dat". VTP can run in three different modes: Server mode – in server mode you can create, remove, and modify VLANs. trunk port) switchport trunk encapsulation dot1q switchport mode trunk switchport nonegotiateStep 9. Configure a different native VLAN on all new switches that are configured as VTP clients. Also consider one of the more common VTP-related issues: a password mismatch. Devices in a VTP domain always use the VLAN configurationof the device with the highest VTP configurationrevision number. Configure the VTP administrative-domain name. 07-15-2021 05:59 AM. If VLAN 120 is present on the trunk , it should forward that traffic regardless of VTP. VTP servers advertise their VLAN configuration to other switches in the same VTP domain and synchronize their VLAN configuration with other switches based on messages received over trunk links. on vtp domain ONE layer3 switch just use. If the device is in VTP server or VTP transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN database. Here are few methods from my side which I can think of: 1- Implement VTP in inital stage and configure all the required VLAN which you want to be availabe all the side and then change it to transparent . • If the VTP mode or domain name in the startup configuration does not match the VLAN database, the domain name and VTP mode and configuration for the first 1005 VLANs. vtp domain "xxx" SW2: vtp mode client. In this example, we are excluding the router address. 2SX train. VTP mode transparent would be the choice for most networks. VTP is a Cisco-proprietary protocol that is available on most of the Cisco Catalyst series products. VTP is a Cisco proprietary method of. Mahesh Gohil. You make global VLAN configuration changes for the domain using either the command-line interface (CLI) or Simple Network Management Protocol (SNMP). One cannot synchronize switches with different domain names. Switch (config)#no vtp pruning. VTP version 3 differs from earlier VTP versions in that it does not directly handle VLANs. 1Q, and ISL trunks. Mel. In VTP client or server mode, normal-range VLANs are excluded from subinterfaces. Remove the Vlan . 0 Helpful. Example of how VTP works VTP Domain. I've recently come across the following. The VLAN information is stored in NVRAM and it’s not lost after a reboot. The VLAN Trunking Protocol (VTP) is used to manage the configuration of switches that are part of a VTP management domain, as we learned in Chapter 3. 3) Configure the VTP server in the domain to recognize the BID of the new switch. This command is optional for modes other than server mode. A VTP version 2-capable device can operate in the same VTP domain as a device running VTP version 1 if version 2 is disabled on the version 2-capable device (version 2 is disabled by default). Server—In VTP server mode, you can create, modify, and delete VLANs and specify other configuration parameters (such as VTP version and VTP pruning) for the. This way I can SSH into each switch during a planned downtime window, and disable vtp pruning on each of them. You make global VLAN configuration changes for the domain. SW1 (config)#vtp mode server. ”I would just add make sure the VTP client switch is in the same VTP domain as the server and set the inter-switch link as trunk port. Only way i know is removing vlan. VLAN Trunking Protocol is a Cisco proprietary protocol used for communicating VLAN information by Cisco switches. 6-4: VLAN Trunking Protocol. Important VTP components are 1) VTP domain 2) VTP Pruning, 3) VTP Advertisements. Device(config)# vtp domain eng_group: Configures the VTP administrative-domain name. This command is optional for modes other than server mode. switchport trunk pruning vlan remove 6) do we issue this command 2 times on each end of the trunk interface , and must do this for all the trunks that vlan6 will pass through . Prasanna Kumar Desireddy. Good luck,A VTP domain includes one or more network switches that share the same VTP domain name and that are connected with trunk interfaces. adding another VLAN anywhere in the VTP domain creates a VLAN on that device that is not running. dat file in client mode from the updates from the server, in server and transparent. Options. You will just have two switches on which you can add/remove vlans from the VTP domain. ) Client/server state in your VTP network 2. VTPPruning works when there is aLAN interface. Not sure what you mean by you want it to be in vlan 13 and you have set a mangement address on port gi0/24. VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks on the whole local area network. a switch has to be configured as either a VTP server or VTP client. " erase cat4000_flash: " then reload your switch. Recall that three VTP modes exist – server, client, and transparent mode. With VTP Versions 1 and 2, you cannot change the VTP mode to client or server if. 00b8. In this Cisco CCNA training tutorial, you’ll learn about Cisco VLAN Trunking Protocol (VTP) which enables the deletion, renaming, and addition of VLANs on switches configured as VTP servers. The strange part is that after deleting the switch configuration you will notice that the Vlans are still there. VTP operation modes. VTP server. These modifications are then distributed to all switches in the VTP domain. All switches under a VTP domain. A few things worth troubleshooting are: 1. Switches in a VTP domain always use the VLAN configuration of the switch with the highest VTP configuration revision number. This switch is becoming Primary server for vlan feature in the VTP domain VTP Database Conf Switch ID Primary Server Revision System Name VLANDB Yes 00d0. EWA14. SW1 and SW2 start out knowing about VLAN 2 as a side-effect of the switchport access vlan 2 commands on each. 8 VTP Domain Name Go to solution vsurresh Beginner Options 03-12-2018 08:22 AM - edited 03-08-2019 02:13 PM Hello experts, Any input from you guys would be. VLANs created or deleted in one domain won't be propagated to the other and VLANs that exist in both domains still pass traffic as expected. You can reset the revision to number to zero by changing the switch to VTP transparent then changing it back to VTP client mode. VTP는 스위치드 네트워크에서 관리를 줄입니다. Enter configuration mode and use the following commands to enable client mode. I lose connectivity only when I remove the 3750X from the VTP domain. This is because the VTP domain name (just the name) is also carried in the DTP packet. (Optional) Verify that the domain name is the same as in Step 1 and that the configuration revision number is 0. If you add a device that has a revision number higher than the revision number in the VTP domain, it can erase all VLAN information from. A VTP version 2-capable device can operate in the same VTP domain as a device running VTP version 1 if version 2 is disabled on the version 2-capable device (version 2 is disabled by default). Date-SW#sh int trunk. A VTP server switch can add, modify and delete VLANs for the whole. The vtp transparent command disables VTP from the domain but does not remove the domain from the switch. switches is the VTP domain name (Larry). (VLAN IDs 1 and 1002 to 1005 are automatically created and cannot be removed. "Dynamic Trunking Protocol (DTP) sends the VTP domain name in a DTP packet. If the switch has a trunk connection to a VTP domain, the switch learns the domain name from the VTP server in the domain. A VTP domain is made up of one or more interconnected network devices that share the same VTP domain name. dat File €section for the procedure. What VLAN Trunk Protocol (VTP) domain name and VTP mode to use on this switch. Each device can be in one VTP domain, Layer 2 trunk interfaces, and Layer 2 port channels. The MD5 digest on your 4506 is not the same, do you have VTP password configured? If no, you can try to change the VTP domain name to a dummy one and change it back to see if VTP propagate or not. The point is to make you understand how DTP. If you turn it off on one of your VTP servers, then that change gets propagated. (E. •- Come back to VTP mode transparent. However, manual pruning is preferred because VTP pruning requires VTP client/server mode operation. This resets the Configuration Revision number to zero ('0'). In VTP Versions 1 and 2, the VTP mode must be transparent for VTP and VLAN information to be saved in the running configuration file. The name can be 1 to 32 characters. 1) Demote the switch that is the current vtp server and running vtp version1 to transparent mode. So you need to remove them, do a "copy run start" command, delete the vlan. 3) change this switch vtp version number to 2 and promote back to either server or client mode. With following steps it will work for sure. Switch#show vlan briefI have 2980 switch running 6. Connect the switch to the network and configure the appropriate trunk links. dat :) –. You use the interface configuration command mode to define the port membership mode and add and remove ports from a VLAN. Is there a way to remove the VTP domain name on an IOS-based Catalyst switch without resetting? In 'vlan database' mode I have tried the following which do NOT. By default, the VLAN database file name is vlan. Step 4 show vlan brief: Verify the VLAN removal. Therefore, VTP works properly in the domain. domain. There will be something name as NULL or anything else. In VTP Versions 1 and 2, the VTP mode must be transparent for VTP and VLAN information to be saved in the running configuration file. 122-25. If you need to have communication between VLANs, or if they are isolated. VTP shares VLAN configuration information between Cisco switches on trunk connections. Port to our Core switch is in trunk mode.