Sep 29, 2014 vlan trunk protocol vtp reduces administration in a switched network. Conventions relatives aux conseils techniques cisco. Common vtp configuration tasks are setting the operating mode, domain, and password. Vlan trunk protocol vtp is a cisco proprietary protocol used to share vlan configuration across the network. Vlan and vtp configuration this lesson covers virtual local area network vlan and vlan trunking protocol vtp configurations. Vtps effects on vlan configuration before we get into the commands themselves, lets examine how vlans have been implemented on cisco switches historically. Vtp advertisements are used to distribute the vlan configuration across the vtp domain. In other words, switches use vlan trunking protocol vtp to communicate among themselves about vlan configuration. Vtp server a vtp server is used to advertise the vlan configuration to all vtp enabled switches in the same vtp domain. Vtp configuration pdf file download, vtp download, vtp pdf,vtp mode, vtp pruning,vlan trunking protocol. Configuration du protocole vtp vlan trunk protocol anglais.
Regardless of vtp mode, the vlan assignment for every switch interface. To participate in vtp, at least one trunk port on the switch must be connected to a trunk port. I will show you how to configure vtp in this article. Vlan trunking protocol implementing cisco ip switched. Vlan trunk protocol vtp is a ciscoproprietary protocol used to replicate vlans using layer 2 trunk frames to other switches.
Switches that are in vtp transparent mode display the vlan and vtp configurations in the show runningconfig command output because this. After vtp is configured we will verify everything on each switch. Vtp configuration best cisco ccna ccnp and linuxcentos pdf. Pour ce faire cisco utilise le protocole vtp vlan trunking protocol. Vtp version 1 and version 2 configuration guidelines this section describes the guidelines for implementing vtp in your network.
Vlan trunking protocol vtp is a cisco proprietary protocol that propagates the definition of virtual local area networks vlan on the. The second command indicates that this is an access port, as opposed to a trunk port. Vtp modes the modes a switch can be configured in the vtp domain, as described above. Vtp pruning increases the network bandwidth by reducing unnecessary flooded traffic, such as broadcast, multicast, unknown, and flooded unicast packets on trunk links. The command to configure vtp is the global configuration mode. To manually configure an interface as a trunk port. You can download the cisco packet tracer example with. This section provides some guidelines for the configuration of vtp in the network. If youre going to use vtp, versions 1 or 2, have only one switch in server mode, all others in client mode. Note for complete syntax and usage information for the commands used in this chapter, refer to the. By using vtp, you can also prune your vlans, saving bandwidth. A vlan allows us to take the infrastructure for one local area network and make multiple virtual local networks which helps to segment different broadcast domains.
This reduces the need to configure the same vlan everywhere. Switch 4 switch 5 switch 6 switch 1switch 3 switch 2 port 1 port 2 red vlan 24511 port 4 port 5 flooded traffic is pruned. This way it will inherit all the vtp settings along with the new configuration revision number. The vtp domain name can be learned by a client switch from a server switch, but only if the client switch domain is in the null state. Dec 02, 20 vlan trunk protocol vtp is a ciscoproprietary protocol used to replicate vlans using layer 2 trunk frames to other switches. With vtp v1 and v2 it is not possible to completely disable vtp on cisco switches. The first command creates vlan 100, and enters vlan configuration. Complete all vtp requirements by configuring trunking between two switches.
On all trunks when the database of a switch becomes invalid as a result of a configuration. Catalyst 6500 series switch cisco ios software configuration guiderelease 12. Cisco vlan trunking protocol cisco certification lab. Vtp is a cisco proprietary protocol that is available on most of the cisco catalyst series products. So its listening to vtp frames and when the first frame comes, the switch accepts vtp domain name from it, updates its vlan database and works as vtp server. Vlan trunk protocol vtp is a cisco proprietary protocol used to share vlan configuration across the. Vtp configuration cisco proprietaryadvertise vlan attributes to reduce admin overhead 1.
Chapter 231 cisco ios software configuration guide, release 15. Unrecognized typelengthvalue tlv supporta vtp server or client propagates configuration changes to its other trunks, even for tlvs it is not able to parse. This article describes the configuration of vtp v1 or v2. In a large network there can be mant switches and configuring this switches can be very difficult one by one for vlans. Vlan trunk protocol vtp reduces administration in a switched network. The main goal of vtp version 3 remains to synchronize vlans but it has a number for extras. Vlan trunk protocol vtp is a protocol created by cisco to create and manage vlans for a large network with many interconnected switches and to maintain consistency throughout the network. Vlan trunking protocol, or just vtp, is a useful feature for managing vlans across multiple switches. How to setup vlan trunking protocol vtp on cisco switches. Vtp version 2 supports basic vlans 21001 propagation, work with isl protocol, supports authentication with md5 hash. Instructions for configuring basic vtp on cisco switches. Vtp allows the network administrator to control the instances of vlans on the network by creating vtp domains. Once the new switch is set to the same vtp domain name with revision number 0 and configured as vtp server, connect it to the lan. This chapter describes how to use the vlan trunking protocol vtp and the vlan database for managing vlans with the catalyst 2960 switch.
Sep 07, 2012 instructions for configuring basic vtp on cisco switches. This document provides information on how to configure vlan trunk protocol vtp. This document requires a native and trunking vlan between the switches in order for vtp to propagate across switches. Default vtp version 1 and version 2 configuration table 101 shows the default vtp configuration. Configure one switch as a vtp server and another as a vtp client. Vtp is a protocol used by cisco switches to maintain a consistent database between switches for trunking purposes. Oct 11, 2015 in this post, i will show steps to configure vlan trunking protocol vtp in cisco ios switch. Every time a vlan is createdmodifieddeleted the revision number is increased by 1 and the information gets replicated to other vtp servers and clients. Vtp vlan trunking protocol is a cisco proprietary protocol which allows to propagate vlan database across local area network switching segment. Vtp v3 adds the mode off option which effectively disables vtp. That was a simple scenario with just two switches connected with a trunk port and having shared vlans belonging to both switches.
Token ring supportvtp version 2 supports token ring lan switching and vlans trbrf and trcrf. It is a method to ease administration by selecting a switch to be configured as a vtp server. Vtp configuration best cisco ccna ccnp and linuxcentos. If you need to delete a vlan you also do this on the vtp server switch and the vlan will automatically be deleted on all the clients. How to configure cisco vtp vlan trunking protocol in a previous post i explained how to configure vlans on cisco switches. Vlan trunking protocol vlan trunking protocol vtp is a cisco layer 2 messaging protocol that manages the addition, deletion, and renaming of vlans on a networkwide basis. Within each vtp domain, one or more switches are configured as vtp servers. This configuration will be pushed to the vtp client switches, so you only need to add them on the vtp server switch.
For all packet tracer examples and files, you can check packet tracer labs page. The first command enters interface configuration mode. Cisco created this protocol to share and synchronize their vlan information throughout the network. Vtp server mode a switch using this mode can create and delete vlans.
Configuration du protocole vtp vlan trunk protocol cisco. Configure vlan trunking protocol vtp on all switches. How to configure vtp server mode on cisco switch grandmetric. Here are some of the new additions to vtp version 3. Vtp vlan trunking protocol is a cisco proprietary protocol used by cisco switches to exchange vlan information. Its been around for a while but until recent ios versions it wasnt supported on cisco catalyst switches. Cisco vtp vlan trunking protocol tutorial flackbox. This procedure is the faster method to clear vtp configuration revision number. Feb 18, 2019 vlan trunking protocol vtp is a cisco proprietary protocol that propagates the definition of virtual local area networks vlan on the whole local area network. In versions 1 and 2, the only real difference between server mode and client mode, the former allows you to make vlan configuration changes, the latter does not. Without vtp pruning, a switch floods broadcast, multicast, and unknown unicast traffic across all trunk links within a vtp domain even though receiving switches might discard them. Vtp vlan trunking protocol is used to exchange vlan information between cisco catalyst switches.
In this topology, 2 cisco catalyst 295024 switches and 6 pcs are used. On a trunk coming up on a switch with an invalid database. Cisco ios software configuration guide, release 12. If you configure the switch as vtp transparent, you can create and modify vlans, but. Download my complete 350page cisco ccna lab guide for free. When you configure a new vlan on one vtp server, the vlan is distributed through all switches in the domain.
Cisco ccent and ccna certification candidates or anyone interested in learning networking basics. Virtual local area network vlan trunk protocol vtp reduces administration in. Vtp configurationcisco proprietaryadvertise vlan attributes to reduce admin overhead 1. To set the vtp version to v2, you execute the vtp version 2 command on the vtp server switch, this setting is propagated to all switches in the vtp domain. Basic vtp configuration instructor version cisco, ccna. With vtp, you can synchronize vlan information like vlan id or vlan name with switches inside the same vtp domain. Vtp replicates configured vlans to all participating switches.
When you configure a new vlan on one vtp server, the vlan is distributed through. Catalyst platforms vtp servers advertise their vlan configurations to other switches in the same vtp domain and synchronize their vlan configurations with other switches based on advertisements received over trunk links. Since the lat 1990s, cisco switches have supported a proprietary protocol that is intended to help engineers configure the same vlans across multiple switches. Vlan trunking protocol vtp is a cisco layer 2 messaging protocol that manages the addition, deletion, and renaming of vlans on a networkwide basis. Vtp is a layer 2 protocol that allows to control, create and delete vlans from a central vtp server. An advertisement request is sent by a client or a server in these situations. Vtp is cisco proprietary and can only be used on cisco switches. The following commands will work on most cisco switch models such as 4500, 3850, 3650, 2960, 3560 etc. Cisco ios software configuration guide, release 15.
In this post, i will show steps to configure vlan trunking protocol vtp in cisco ios switch. In this lab, you will be using s1 as the vtp server, with s2 and s3 configured as vtp clients or in vtp transparent mode. Configuration changes made to the vlans on a single vtp server switch are propagated. Apr 11, 2019 cisco ccent and ccna certification candidates or anyone interested in learning networking basics. Configure the vmps and the client with the same vtp domain name. Configure vlan trunking protocol vtp in cisco ios switch. This tutorial explains basic concepts of vtp protocol, vtp domain, vtp messages and vtp modes server mode, transparent mode and client mode in detail with practical example in packet tracer. To better understand the true value of vtp, consider an example network with 100 switches. All switches have the same the vtp domain name, unless the network design insists for different vtp domains. Introduction to vtp vlan trunking protocol youtube. Vlans are then created on the vtp server and pushed to the other switches in the domain. Configuring vlan trunking protocol vtp free ccna workbook. Below is the step by step method to be followed step 1 issue show vtp status command on cisco switch in order to check the vtp configuration revision number. Here we change the switch vtp mode to transparent mode, and then switch back.
Vtp transparent mode a switch using this mode doesnt share its vlan database, but it forwards received vtp advertisements. I will configure switcha in vtp server mode, switchb and switchd in vtp client mode and switchc in vtp transparent mode. How to configure vtp in cisco packet tracer youtube. With vtp, you can make configuration changes centrally on one or more network devices and have those changes automatically communicated to all the other network devices in the network. In vtp version 3, the information distributed in vtp version 1 and version 2 advertisements are. Vlans are configured on the vtp server and then replicated to other connected switches, called vtp clients. Cisco vlan trunking protocol cisco certification lab kits. Virtual local area network vlan trunk protocol vtp reduces administration in a switched network. Vtp version 2 supports the following features, which are not supported in version 1. So if you want to protect the new switches from accepting vtp domain from vtp frames passing by, either configure them as vtp transparent or use a vtp password in your network. Vlan trunking protocolh2 vlan trunking protocol vtp is a cisco layer 2 messaging protocol that manages the addition, deletion, and renaming of vlans on a networkwide basis. Refer to understanding vlan trunk protocol vtp for more information on vtp. Sep 24, 2014 refer to understanding vlan trunk protocol vtp for more information on vtp.
422 99 169 540 1021 755 1194 96 892 54 6 882 46 1174 1010 998 834 1374 386 993 629 668 620 863 1309 1261 134 689 1506 1262 947 1112 1488 494 173 166 160 631 528