CCNA Explanation and application of vlan

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LucioCondoriMamani

ccna

VLAN Technology
F o l l o w m e t o t a k e t h e N A c e r t i fi c a t e

CCNA - VLAN Technology
Make no less effort than anyone else!
Broadcast domain : broadcast
message transmission range.
VLAN can isolate the broadcast
domain.
VLAN
10
VLAN
20 VLAN
20
A B
Broadcast Domain

CCNA - VLAN Technology
Make no less effort than anyone else!
Different VLAN = different broadcast domain.
Prevent broadcast storm.
VLAN 10
VLAN 20 VLAN 20
A B
Broadcast Domain

CCNA - VLAN Technology
Make no less effort than anyone else!
While VLAN divides broadcast domains, it also limits the ability of hosts
in different VLANs to communicate at Layer 2.
Can users in different VLAN with same subnet of IP access each other ?
VLAN 100
Switch
VLAN 200
10.1.1.100/24 10.1.1.101/24
Security of VLAN

CCNA - VLAN Technology
Make no less effort than anyone else!
Protect the network against dreaded insider attacks.
Example:
A malicious user on a given node can run a packet sniffer and begin capturing
all network traffic that traverses the switch to which he is physically connected.
Security of VLAN

CCNA - VLAN Technology
Make no less effort than anyone else!
Frames without Tag
Frame with Tag
0x8100 PRI CFI VLAN ID （ 12b ）
2 bytes
2 bytes
DMAC Data
SMAC Type FCS
6 bytes 6 bytes 2 bytes 46-1500 bytes 4 bytes
DMAC Data
SMAC Type FCS
6 bytes 6 bytes 2 bytes 46-1500 bytes
Tag
TPID TCI
4 bytes
 Tags are used to distinguish different VLANs.
 IEEE 802.1Q standard
 Native VLAN – untagged VLAN
Format of VLAN frames

CCNA - VLAN Technology
Make no less effort than anyone else!
 The data frame sent by PC is called "original frame" and "blank data frame" (without tag).
 For each interface, there is a data receiving direction and a sending direction.
Interface mode
 Access mode - Connect terminal devices (computers, servers, printers, cameras)
 trunk mode - trunk mode - switch to switch
Switch Interface Mode

CCNA - VLAN Technology
Make no less effort than anyone else!
Link Type
VLAN 10
VLAN 20 VLAN 20
Trunk Trunk
Access Access Access Access
 The link between the user host and the switch is an access link,
and the link between switches is a trunk link.

CCNA - VLAN Technology
Make no less effort than anyone else!
VLAN Configuration
VLAN 10
VLAN 20 VLAN 20
Trunk Trunk
Access Access Access Access
# configure terminal
(config)# vlan 20
(config-vlan)# name Sales
(config-vlan)# exit
!
(config)# interface gigabitethernet 0/1 (config-
if)# switchport mode access (config-if)#
switchport access vlan 2 (config-if)# exit
(config)# interface gigabitethernet 0/2 (config-
if)# switchport mode trunk
(config-if)# switchport trunk allow vlan 20

CCNA - VLAN Technology
Make no less effort than anyone else!
VLAN Configuration
Demo

CCNA - VLAN Technology
Make no less effort than anyone else!
VLAN Trunk Protocol (VTP)
 VLAN Trunk Protocol (VTP) reduces
administration in a switched network.
When you configure a new VLAN on one
VTP server, the VLAN is distributed
through all switches in the domain.
 VTP is a Cisco-proprietary protocol.

CCNA - VLAN Technology
Make no less effort than anyone else!
VTP modes
 Server mode : Create, modify, and delete VLANs and specify other
configuration parameters, such as VTP version and VTP pruning, for the entire
VTP domain. (Default mode).
 Client mode : Synchronise VLAN configuration from VTP server.
 Transparent mode : VTP transparent switches do not participate in VTP.

CCNA - VLAN Technology
Make no less effort than anyone else!
Inter-VLAN Routing
 The purpose of dividing vlans : to make different vlans unreachable
The second layer is unreachable : the broadcast is based on the propagation of the LAN
Layer 2 communication : unicast communication is fine , broadcast is failure.
 Cross network segment - Layer 3 routing
After the deployment of VLAN, it can still communicate across network segments.

CCNA - VLAN Technology
Make no less effort than anyone else!
Inter-VLAN Routing
Host A
SWA
Host B
Trunk
G0/0/1.1 G0/0/1.2
VLAN 10 VLAN 20
GW:192.168.2.254 GW:192.168.3.254
192.168.2.254 192.168.3.254
Router
 Configure the link between the
switch and the router as a trunk
link, and create sub-interfaces on
the router to support VLAN
routing.

CCNA - VLAN Technology
Make no less effort than anyone else!
Thank You!

The document discusses virtual local area networks (VLANs) and provides instructions for configuring VLANs and inter-VLAN routing on a switch and router. It defines VLANs, their benefits, types of VLANs including data, default, native and management VLANs. It also covers trunking, 802.1Q tagging, dynamic trunking protocol (DTP), VLAN trunking protocol (VTP) and configuring inter-VLAN routing using a router on a stick. Basic configurations and verification steps are provided for hands-on lab applications to create VLANs, assign ports, enable trunking and test inter-VLAN routing.

Vlan sanss40

VLANs logically segment LANs into broadcast domains by using switches to assign ports and their attached devices to VLAN groups based on their MAC address, IP subnet, or switch port. This allows devices that are physically located on different floors or buildings to belong to the same logical LAN segment while preventing Layer 2 broadcasts from crossing VLAN boundaries. VLAN trunk links between switches allow multiple VLANs to be transmitted over the same physical link.

SRWE_Mod-3.pptxazsDFGHJK,./.L,MNBVCXZzxCVefazalammahi

VLANs_Module_3.pptxBOURY1

VLANs logically segment devices on the same physical network to improve security, performance and manageability. Trunks allow VLANs to extend across multiple switches by carrying traffic for all VLANs over a single link. This module explains how to configure VLANs and trunks on Cisco switches including creating VLANs, assigning ports, setting trunk modes and verifying configurations. Hands-on packet tracer activities and a lab are included to reinforce the concepts.

Vlan.pdfitwkd

A VLAN allows devices on different LAN segments to communicate as if they were on the same LAN. VLANs logically segment LANs into broadcast domains to limit broadcast traffic. Frame tagging and filtering methods are used to associate devices with VLANs and control broadcast domains. Common frame tagging protocols are IEEE 802.1Q and Cisco's ISL which add identifiers to frames to associate them with VLANs.

VLAN Virtual Area Network ,Switch,Ethernet ,VIkram SnehiMR. VIKRAM SNEHI

A VLAN allows computers on different physical LAN segments to communicate as if they were on the same LAN. VLANs logically segment LANs into different broadcast domains by using frame tagging to identify which VLAN a frame belongs to. There are two main types of VLAN configurations - static, where ports are manually assigned to VLANs, and dynamic, where assignments are made via network management software based on device MAC addresses.

Virtual local area networkVeena Rao

This document provides an overview of virtual local area networks (VLANs). It begins with an introduction to VLANs, explaining that they allow devices to communicate as if on the same physical LAN even if they are on different physical LANs. The document then covers VLAN types including data, default, native and voice VLANs. It also discusses VLAN switch ports, managing VLANs, and the benefits of VLANs over wireless local area networks. In conclusion, it states that VLANs segment broadcast domains to improve LAN performance and manageability while reducing costs.

Vlan finalVeena Rao

08 VLAN Prىلتانىنinciples and Configuration.pptxssuserb8f225

Ccna 9Simanto Basher

Layer 2 switching provides four key advantages: hardware-based bridging at wire speed and low latency and cost. Layer 2 switches perform three main functions: address learning, forward/filter decisions using the MAC address table, and loop avoidance using the Spanning Tree Protocol. Configuring Layer 2 switches involves setting the hostname, enable secret password, interface descriptions, VLANs, trunking, and protocols like VTP for consistent VLAN configuration across switches in the same management domain.

W3-Presentation-VLANs-AMA COMPUTER COLLEGE.pdfgummybear37

This document provides an overview of VLANs (virtual local area networks) including defining what a VLAN is, listing the benefits of implementing VLANs, describing different types of VLANs such as data, native, management, and voice VLANs. It also explains VLAN trunks, how to configure VLANs and trunks, common problems that can occur with trunk configuration, and best practices for VLAN design and security.

CCNP Switching Chapter 3Chaing Ravuth

The document discusses campus network architecture and VLAN implementation. It covers implementing VLANs and trunks in a campus environment, including the differences between end-to-end and local VLAN models. It also discusses configuring and verifying VLANs and trunks, such as creating VLANs, assigning access ports, and configuring trunk ports between switches. Best practices are provided such as using IEEE 802.1Q trunking and limiting the number of VLANs per switch.

ENCOR_Capitulo 1.pptxManuelRojas960410

This chapter discusses how switches and routers forward network traffic. It covers Layer 2 forwarding using MAC addresses on switches and Layer 3 forwarding using IP addresses on routers. The chapter examines common forwarding mechanisms like MAC address tables, VLANs, trunking, and allowed VLANs. It describes how switches build MAC tables to reduce flooding and how routers use IP forwarding tables to send packets to their destination.

03 PO_SP2001_E01_0 L2 Technology_VLAN.pdfNguynTy5

This document provides information about layer 2 networking protocols. It aims to help readers master VLAN/PVLAN theory, understand STP principles, and learn trunking technology. The document discusses VLANs, PVLANs, QinQ VLANs, VLAN stacking, MVLANs, spanning tree protocol operation principles, STP port states, and trunking. It provides diagrams and explanations of these key layer 2 concepts and protocols.

Лекц 9Muuluu

VLAN allows logical segmentation of networks even if they are physically connected. It divides a physical broadcast domain into multiple broadcast domains to reduce broadcast traffic and increase security. VLAN uses tagging to identify which VLAN a frame belongs to and switches use filtering tables to determine how to handle each frame. Routers are needed to route between VLANs since they are separate broadcast domains.

Chapter 8 .vlan.pdfmanojkumar595505

CCNA_RSE_Chp6.pptxsantosh Kumar

The document discusses VLANs and inter-VLAN routing. It covers VLAN segmentation and implementations, including configuring VLANs and trunk ports on switches. It also discusses the two main options for inter-VLAN routing: legacy inter-VLAN routing which uses separate router interfaces for each VLAN, and router-on-a-stick which uses subinterfaces on a single router trunk port to route between VLANs. The document provides configuration examples and troubleshooting tips for VLAN and inter-VLAN routing implementations.

CCNA2 Verson6 Chapter6Chaing Ravuth

This document contains a chapter from a Cisco CCNA Routing and Switching course on VLANs. It begins with objectives for sections on VLAN segmentation, implementations, and inter-VLAN routing. It then provides explanations and examples of VLAN definitions and benefits, types of VLANs including voice VLANs, VLAN trunks, controlling broadcast domains with VLANs, tagging Ethernet frames for VLAN identification, native VLANs, and configuring VLAN assignments, trunk links, and verifying and deleting VLAN information.

VLAN Trunking ProtocolNetwax Lab

CCNA 2 Routing and Switching v5.0 Chapter 3Nil Menon

This document discusses VLANs and trunking. It covers VLAN segmentation and implementation, including assigning ports to VLANs, configuring trunk ports, and troubleshooting VLAN and trunking issues. It also addresses VLAN security concerns like spoofing attacks and mitigation techniques like private VLANs. The document provides best practices for VLAN design such as separating management and user traffic into different VLANs.

CCNA (R & S) Module 03 - Routing & Switching Essentials - Chapter 6Waqas Ahmed Nawaz

Cisco Packet Tracer- SRWE_Module_3_VLAN.pdfsyujatkj5

Vlan configuration in medium sized networkArnold Derrick Kinney

This document provides instructions on implementing VLANs and trunks in a medium-sized computer network. It discusses how VLANs can segment a network into logical broadcast domains while trunks allow multiple VLANs to be transported over a single link between switches. Static and dynamic VLAN configuration methods are described. The document also covers VLAN trunking protocols, configuring trunk links on switches, and managing VLAN traffic passing over trunks.

CCNA Advanced SwitchingDsunte Wilson

The document discusses advanced switching concepts including the Spanning Tree Protocol (STP), virtual LANs (VLANs), and the VLAN Trunking Protocol (VTP). STP builds a logical topology to prevent loops, elects a root bridge, and puts ports in different states. VLANs segment broadcast domains and provide benefits like security and flexibility. VTP manages VLAN configurations across trunk links within the same VTP domain.

Vlan and vtpRaj sekar

VLANs logically segment a network into separate broadcast domains to improve security, performance, and manageability. VLANs use frame tagging to identify which VLAN a frame belongs to. The two main frame tagging protocols are Cisco's proprietary ISL protocol and the IEEE 802.1Q standard. 802.1Q is now more commonly used. VLAN ports can be access ports assigned to a single VLAN or trunk ports that can carry multiple VLAN traffic between switches.

Vlan and vtpRaj sekar

VLANs logically segment a network into separate broadcast domains to improve security, performance, and manageability. VLANs use frame tagging to identify which VLAN a frame belongs to. The two main frame tagging protocols are Cisco's proprietary ISL protocol and the open standard IEEE 802.1Q protocol. A VLAN port can be either an access port assigned to one VLAN or a trunk port that can carry multiple VLAN traffic between switches.

Ccna3 mod9-vtpjmdoger

This document provides an overview of VLAN trunking, VLAN tagging protocols, and VLAN Trunking Protocol (VTP). It defines IEEE 802.1Q and Cisco Inter-Switch Link (ISL) as the two major methods for VLAN tagging. The document explains how trunk links carry traffic for multiple VLANs using tagging, and how switches use the VLAN tags to determine how to forward packets. It also describes configuring trunking on switches, including setting the encapsulation type and interface mode. Finally, it provides a brief introduction to the Dynamic Trunking Protocol (DTP) used for automatic trunk negotiation.

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CCNA Explanation and application of vlan

1. VLAN Technology F o l l o w m e t o t a k e t h e N A c e r t i fi c a t e

2. CCNA - VLAN Technology Make no less effort than anyone else! LAN – Local Area Network A collection of devices connected together in one physical location, such as a building, office, or home. VLAN - Virtual Local Area Network - Network Segmentation - Flexibility - Safety - Data Link layer ( OSI Layer 2) VLAN Definition

3. CCNA - VLAN Technology Make no less effort than anyone else! Broadcast domain : broadcast message transmission range. VLAN can isolate the broadcast domain. VLAN 10 VLAN 20 VLAN 20 A B Broadcast Domain

4. CCNA - VLAN Technology Make no less effort than anyone else! Different VLAN = different broadcast domain. Prevent broadcast storm. VLAN 10 VLAN 20 VLAN 20 A B Broadcast Domain

5. CCNA - VLAN Technology Make no less effort than anyone else! While VLAN divides broadcast domains, it also limits the ability of hosts in different VLANs to communicate at Layer 2. Can users in different VLAN with same subnet of IP access each other ? VLAN 100 Switch VLAN 200 10.1.1.100/24 10.1.1.101/24 Security of VLAN

6. CCNA - VLAN Technology Make no less effort than anyone else! Protect the network against dreaded insider attacks. Example: A malicious user on a given node can run a packet sniffer and begin capturing all network traffic that traverses the switch to which he is physically connected. Security of VLAN

7. CCNA - VLAN Technology Make no less effort than anyone else! Frames without Tag Frame with Tag 0x8100 PRI CFI VLAN ID （ 12b ） 2 bytes 2 bytes DMAC Data SMAC Type FCS 6 bytes 6 bytes 2 bytes 46-1500 bytes 4 bytes DMAC Data SMAC Type FCS 6 bytes 6 bytes 2 bytes 46-1500 bytes Tag TPID TCI 4 bytes  Tags are used to distinguish different VLANs.  IEEE 802.1Q standard  Native VLAN – untagged VLAN Format of VLAN frames

8. CCNA - VLAN Technology Make no less effort than anyone else!  The data frame sent by PC is called "original frame" and "blank data frame" (without tag).  For each interface, there is a data receiving direction and a sending direction. Interface mode  Access mode - Connect terminal devices (computers, servers, printers, cameras)  trunk mode - trunk mode - switch to switch Switch Interface Mode

9. CCNA - VLAN Technology Make no less effort than anyone else! Link Type VLAN 10 VLAN 20 VLAN 20 Trunk Trunk Access Access Access Access  The link between the user host and the switch is an access link, and the link between switches is a trunk link.

10. CCNA - VLAN Technology Make no less effort than anyone else! VLAN Configuration VLAN 10 VLAN 20 VLAN 20 Trunk Trunk Access Access Access Access # configure terminal (config)# vlan 20 (config-vlan)# name Sales (config-vlan)# exit ! (config)# interface gigabitethernet 0/1 (config- if)# switchport mode access (config-if)# switchport access vlan 2 (config-if)# exit (config)# interface gigabitethernet 0/2 (config- if)# switchport mode trunk (config-if)# switchport trunk allow vlan 20

11. CCNA - VLAN Technology Make no less effort than anyone else! VLAN Configuration Demo

12. CCNA - VLAN Technology Make no less effort than anyone else! VLAN Trunk Protocol (VTP)  VLAN Trunk Protocol (VTP) reduces administration in a switched network. When you configure a new VLAN on one VTP server, the VLAN is distributed through all switches in the domain.  VTP is a Cisco-proprietary protocol.

13. CCNA - VLAN Technology Make no less effort than anyone else! VTP modes  Server mode : Create, modify, and delete VLANs and specify other configuration parameters, such as VTP version and VTP pruning, for the entire VTP domain. (Default mode).  Client mode : Synchronise VLAN configuration from VTP server.  Transparent mode : VTP transparent switches do not participate in VTP.

14. CCNA - VLAN Technology Make no less effort than anyone else! Inter-VLAN Routing  The purpose of dividing vlans : to make different vlans unreachable The second layer is unreachable : the broadcast is based on the propagation of the LAN Layer 2 communication : unicast communication is fine , broadcast is failure.  Cross network segment - Layer 3 routing After the deployment of VLAN, it can still communicate across network segments.

15. CCNA - VLAN Technology Make no less effort than anyone else! Inter-VLAN Routing Host A SWA Host B Trunk G0/0/1.1 G0/0/1.2 VLAN 10 VLAN 20 GW:192.168.2.254 GW:192.168.3.254 192.168.2.254 192.168.3.254 Router  Configure the link between the switch and the router as a trunk link, and create sub-interfaces on the router to support VLAN routing.

16. CCNA - VLAN Technology Make no less effort than anyone else! Thank You!

CCNA Explanation and application of vlan

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