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CCNA 3 v3.1 Module 9

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CCNA 3 Module 9

VLAN Trunking Protocol

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Objectives

• Trunking

• VTP

• Inter-VLAN routing

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History of Trunking

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Trunking Concepts

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Frame Filtering

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Frame Tagging

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Inter-Switch Link Protocol

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VLANs and Trunking

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Frame Tagging and Encapsulation Methods

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VTP Benefits

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VTP Concepts

The role of VTP is to maintain VLAN configuration consistency across a common network administration domain.

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VTP Modes

• Server

• Client

• Transparent

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VTP Mode Comparison

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VTP Operation

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VTP Implementation

• There are two types of VTP advertisements:

Requests from clients that want information at bootup

Responses from servers

• There are three types of VTP messages:

Advertisement requests

Summary advertisements

Subset advertisements

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VTP Basic Configuration Steps

1. Determine the version number

2. Choose the domain

3. Choose the VTP mode

4. Password protect the domain

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Inter-VLAN Routing

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Inter-VLAN Issues and Solutions

Two of the most common issues that arise in a multiple-VLAN environment are as follows:

The need for end-user devices to reach nonlocal hosts

The need for hosts on different VLANs to communicate

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Router on a Stick

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Physical and Logical Interfaces

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Dividing Physical Interfaces into Subinterfaces

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Configuring Inter-VLAN Routing