Virtual lan’s (vlan’s)
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This document discusses virtual LANs (VLANs) and their benefits over traditional physical LAN segmentation using routers. VLANs allow logical grouping of users by functions instead of physical location. VLANs are managed by layer 2 switches which tag frames with VLAN IDs to keep traffic separate. A router or layer 3 switch is needed to route between VLANs. VLANs create separate broadcast and address tables to isolate traffic for improved security and bandwidth utilization.
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Vlan
A virtual local area network (VLAN) is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain regardless of their physical location
vlan
The document discusses VLAN configuration for a group project. It defines VLAN as a broadcast domain within a switch that divides a broadcast domain into multiple broadcast domains. It provides details on LANs, creating VLANs, VLAN types (static and dynamic), and commands used for VLAN configuration like show vlan brief, vlan database, and switchport access vlan. Benefits of VLAN discussed are broadcast control, security, and performance.
VLAN
This document discusses VLANs (virtual local area networks). VLANs logically separate network users and resources connected to switch ports, creating smaller broadcast domains. VLANs simplify network management, provide security over flat networks, and allow flexibility and scalability. VLANs reduce broadcast traffic by containing it within virtual broadcast domains. They allow users to be added to VLANs regardless of physical location and enable adding new VLANs as network growth requires more bandwidth. The document also covers VLAN trunking, identification, membership configuration, and VTP (VLAN Trunking Protocol) which centrally manages VLAN configurations across switches to maintain consistency.
Benefits of vlan
VLANs logically separate broadcast domains to improve network efficiency and security. They allow easy administration by keeping devices on the same VLAN when moved. VLANs segment networks to restrict access between groups and isolate traffic like preventing YouTube at work. They provide security through authentication and wireless user assignment to VLANs regardless of location. VLAN tags allow traffic segregation within and between switches through trunk ports.
Layer2-vlans
The document discusses layer 2 network design concepts. It describes a hierarchical network design with core, distribution, and access layers. It covers layer 2 protocols like Ethernet and switches, and how switches reduce collision domains compared to hubs. The document also covers VLANs, how they segment broadcast domains, and how VLAN traffic can cross switches using 802.1Q trunking. Finally, it discusses link aggregation using LACP for increased bandwidth or redundancy.
Virtual LAN
1. An introduction of LAN.
2. An introduction of VLAN.
3. Properties of VLAN.
4. Types of VLAN.
5. VLAN Identification Method
6. VLAN Trunking Protocol.
7. Inter-VLAN routing.
Vlan
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Virtual LAN
This document discusses VLANs (virtual local area networks). It defines LANs and VLANs, explaining that VLANs logically segment networks based on functions or teams rather than physical connections. It describes static and dynamic VLAN implementation methods and port-based, MAC address-based, and protocol-based VLAN types. Finally, it outlines benefits of VLANs such as easy network changes, traffic control, and improved security.
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A virtual local area network (VLAN) is a group of hosts with a common set of requirements that communicate as if they were attached to the same broadcast domain regardless of their physical location
vlan
The document discusses VLAN configuration for a group project. It defines VLAN as a broadcast domain within a switch that divides a broadcast domain into multiple broadcast domains. It provides details on LANs, creating VLANs, VLAN types (static and dynamic), and commands used for VLAN configuration like show vlan brief, vlan database, and switchport access vlan. Benefits of VLAN discussed are broadcast control, security, and performance.
VLAN
This document discusses VLANs (virtual local area networks). VLANs logically separate network users and resources connected to switch ports, creating smaller broadcast domains. VLANs simplify network management, provide security over flat networks, and allow flexibility and scalability. VLANs reduce broadcast traffic by containing it within virtual broadcast domains. They allow users to be added to VLANs regardless of physical location and enable adding new VLANs as network growth requires more bandwidth. The document also covers VLAN trunking, identification, membership configuration, and VTP (VLAN Trunking Protocol) which centrally manages VLAN configurations across switches to maintain consistency.
Benefits of vlan
VLANs logically separate broadcast domains to improve network efficiency and security. They allow easy administration by keeping devices on the same VLAN when moved. VLANs segment networks to restrict access between groups and isolate traffic like preventing YouTube at work. They provide security through authentication and wireless user assignment to VLANs regardless of location. VLAN tags allow traffic segregation within and between switches through trunk ports.
Layer2-vlans
The document discusses layer 2 network design concepts. It describes a hierarchical network design with core, distribution, and access layers. It covers layer 2 protocols like Ethernet and switches, and how switches reduce collision domains compared to hubs. The document also covers VLANs, how they segment broadcast domains, and how VLAN traffic can cross switches using 802.1Q trunking. Finally, it discusses link aggregation using LACP for increased bandwidth or redundancy.
Virtual LAN
1. An introduction of LAN.
2. An introduction of VLAN.
3. Properties of VLAN.
4. Types of VLAN.
5. VLAN Identification Method
6. VLAN Trunking Protocol.
7. Inter-VLAN routing.
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A VLAN (virtual LAN) is a logical grouping of devices on a network that are not restricted by their physical location. VLANs allow network administrators to segment networks for security and performance reasons. The document defines a VLAN, explains how VLANs are created using switch ports, and discusses trunk ports for carrying traffic between VLANs. It also covers when VLANs are needed and how devices in different VLANs communicate via a router or Layer 3 switch.
Virtual LAN
This document discusses VLANs (virtual local area networks). It defines LANs and VLANs, explaining that VLANs logically segment networks based on functions or teams rather than physical connections. It describes static and dynamic VLAN implementation methods and port-based, MAC address-based, and protocol-based VLAN types. Finally, it outlines benefits of VLANs such as easy network changes, traffic control, and improved security.
What is a VLAN?
VLANs (Virtual LANs) are logical groupings of devices that allow hosts to be grouped together in the same broadcast domain even if they are not connected to the same switch. VLANs are configured on switches by assigning interfaces to broadcast domains. This isolates broadcast traffic so it is only received by devices in the same VLAN, offering advantages like reduced broadcast traffic, ability to group users by department regardless of physical location, and increased network security.
Vlan
Virtual LANs (VLANs) logically segment a network into broadcast domains to restrict communication between devices. VLANs group devices by function, department, application or other criteria without regard to physical location. Routers provide connectivity between VLAN segments. Implementing VLANs on a switch creates separate bridging tables for each VLAN so frames are only switched between ports in the same VLAN. VLANs improve security, flexibility and management of the network compared to relying solely on physical segmentation.
VLAN Virtual Area Network ,Switch,Ethernet ,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.
VLAN
This document discusses virtual local area networks (VLANs). VLANs allow logical grouping of devices regardless of their physical location and can improve security and flexibility. VLANs segment a network into multiple broadcast domains through configuration of ports and switches, providing advantages like traffic control and security but also adding some complexity. The document covers VLAN overview, configuration types including manual, automatic and semi-automatic, and port membership requirements.
VirtuaL area network (VLAN)
This document discusses virtual local area networks (VLANs). It defines VLANs as logically segmenting switched networks based on functions, project teams, or applications, regardless of physical location or network connections. VLANs divide stations into logical groups through software instead of physical segments, allowing easy movement of stations between groups without changing physical configurations. Common VLAN types include port-based, MAC address-based, and protocol-based. Benefits of VLANs include logical organization of networks, easy moves and additions of workstations, flexible configuration changes, traffic control, and improved security.
VLAN (Virtual Local Area Network)
VLANs allow segmentation of a single broadcast domain into multiple broadcast domains in a layer 2 switched network. A VLAN uses virtual boundaries to divide devices into different broadcast domains even if they are physically located on the same switch. Devices within a VLAN can communicate within the broadcast domain but a layer 3 device is required to allow inter-VLAN communication since each VLAN represents a separate IP subnet.
Vlan Types
- Port-based VLANs are commonly used today, where a port is associated with a VLAN.
- Data VLANs carry only user traffic, separating it from voice and management traffic. The default VLAN on Cisco switches is VLAN 1.
- A native VLAN is assigned to trunk ports to handle untagged traffic using VLAN 99 as an example. A management VLAN like VLAN 99 provides switch management access. Voice VLANs use a separate VLAN like VLAN 150 to ensure quality of voice traffic.
VLAN (virtual local area network)
In computer networking, a single layer-2 network may be partitioned to create multiple distinct
broadcast domains, which are mutually isolated so that packets can only pass between them via one or
more routers; such a domain is referred to as a virtual local area network, virtual LAN or VLAN.
A virtual local area network (VLAN) is a logical group of workstations, servers and network devices that
appear to be on the same LAN despite their geographical distribution. A VLAN allows a network of
computers and users to communicate in a simulated environment as if they exist in a single LAN and are
sharing a single broadcast and multicast domain.
Mod8 vlans
VLANs logically segment networks based on functions or project teams, regardless of physical connections. VLANs create broadcast domains by assigning switch ports to VLANs. Routers are used for communication between VLANs. Common VLAN types include port-based VLANs where a device assumes the VLAN of its connected port, and dynamic VLANs where software assigns VLANs based on MAC addresses. VLAN tagging allows a link to carry multiple VLANs by adding a tag to frames to designate VLAN membership.
Lan & vlan
This document provides an overview of local area networks (LANs) and virtual LANs (VLANs). It defines LAN as a network covering a small area like a home, office or campus to connect computers in close proximity. The document discusses common LAN topologies like bus, ring and star. It then introduces VLAN as a way to logically segment devices within a LAN even if they share the same infrastructure. The document explains how VLANs work using tags and trunking between switches. It outlines benefits of VLANs like improved security, flexibility and traffic management compared to traditional LANs.
Advantages of VLAN
VLANs provide several key advantages for network segmentation and security. It reduces broadcast traffic by sending broadcasts only within the relevant VLAN, rather than across the entire network. VLANs also enhance security by restricting each port and user to only communicate within their assigned VLAN, preventing unauthorized access. Additionally, implementing VLAN segmentation is often cheaper than using routers to segment networks into multiple broadcast domains.
Virtual lan
Virtual LANs (VLANs) segment networks logically by assigning ports on a switch to different broadcast domains. This allows broadcast traffic to be contained to specific VLANs rather than flooding the entire network. VLANs can be defined by port, MAC address, IP subnet, or multicast group. Quality of Service can also be implemented using VLAN tags to prioritize certain types of traffic. VLANs provide security and segregation benefits by creating logical boundaries between network segments. They allow networks to scale efficiently while containing broadcast traffic and prioritizing important applications.
Deployment guide1
This document discusses network devices like hubs and switches. It provides details on how hubs operate at the physical layer to pass all traffic between connected segments, while switches can isolate traffic between connected workstations. The document also covers passive network monitoring using port mirroring or network splitters to copy and monitor traffic without affecting the original flow.
Vlan final
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.
Inter-Vlan Routeando
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Vlans (virtual local area networks)
in the slide we discuss - VLAN overview, effectiveness, benefits, how VLAN work, memberships mode, operations, creation Guidelines, add VLAN, accessing,managing and verifying .
Vlans and inter vlan routing
This chapter will cover how to configure, manage, and troubleshoot VLANs and
VLAN trunks. It will also examine security considerations and strategies relating
to VLANs and trunks, and best practices for VLAN design.
4270 vlan-tutorial
VLANs logically segment networks based on organizational functions rather than physical connections. This allows workstations and servers used by the same workgroup to communicate regardless of location. VLANs restrict communication between different VLAN groups and function by logically segmenting the network into broadcast domains so packets are only switched between ports in the same VLAN. Routers provide security, broadcast filtering, and traffic management between VLANs. VLANs address issues like scalability, security, and network management.
Vlan
VLANs logically segment a local area network (LAN) into separate broadcast domains to limit broadcast traffic and provide additional security. A VLAN uses switches to create isolated network segments and define broadcast domains without changing the physical cabling. VLANs offer benefits like limiting broadcast domains, increased security by separating users, and flexibility to change user assignments by reconfiguring ports on switches instead of moving cables.
Lecture_Network Design, InterVlan Routing and Trunking_.pptx
This document discusses VLAN trunking and inter-VLAN routing using routers. It provides an overview of VLANs and how they segment networks logically without regard to physical location. It then describes how VLAN trunks carry multiple VLANs between switches to allow inter-VLAN communication. The document outlines different approaches to inter-VLAN routing, including legacy routing using separate router interfaces per VLAN, and router-on-a-stick which uses a single router interface trunked to multiple VLAN subinterfaces to route between VLANs. It also provides configuration examples for router-on-a-stick inter-VLAN routing and how to verify the configurations.
4270-vlan-tutorial.ppt
VLANs logically segment networks based on organizational functions rather than physical connections. This allows workstations and servers used by the same workgroup to communicate regardless of location. VLANs restrict communication between different VLAN groups and function by logically segmenting the network into broadcast domains so packets are only switched between ports in the same VLAN. Routers provide security, broadcast filtering, and traffic management between VLANs. VLANs address issues like scalability, security, and network management.
VIRTUAL LANS (VLANS).pptx
VLANs logically segment networks into broadcast domains based on organizational functions rather than physical connections. Switches maintain separate bridging tables for each VLAN to restrict communication between ports in different VLANs. Routers provide security and traffic management between VLANs. Common ways to assign devices to VLANs include by port, MAC address, or protocol.
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VLANs (Virtual LANs) are logical groupings of devices that allow hosts to be grouped together in the same broadcast domain even if they are not connected to the same switch. VLANs are configured on switches by assigning interfaces to broadcast domains. This isolates broadcast traffic so it is only received by devices in the same VLAN, offering advantages like reduced broadcast traffic, ability to group users by department regardless of physical location, and increased network security.
Vlan
Virtual LANs (VLANs) logically segment a network into broadcast domains to restrict communication between devices. VLANs group devices by function, department, application or other criteria without regard to physical location. Routers provide connectivity between VLAN segments. Implementing VLANs on a switch creates separate bridging tables for each VLAN so frames are only switched between ports in the same VLAN. VLANs improve security, flexibility and management of the network compared to relying solely on physical segmentation.
VLAN Virtual Area Network ,Switch,Ethernet ,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.
VLAN
This document discusses virtual local area networks (VLANs). VLANs allow logical grouping of devices regardless of their physical location and can improve security and flexibility. VLANs segment a network into multiple broadcast domains through configuration of ports and switches, providing advantages like traffic control and security but also adding some complexity. The document covers VLAN overview, configuration types including manual, automatic and semi-automatic, and port membership requirements.
VirtuaL area network (VLAN)
This document discusses virtual local area networks (VLANs). It defines VLANs as logically segmenting switched networks based on functions, project teams, or applications, regardless of physical location or network connections. VLANs divide stations into logical groups through software instead of physical segments, allowing easy movement of stations between groups without changing physical configurations. Common VLAN types include port-based, MAC address-based, and protocol-based. Benefits of VLANs include logical organization of networks, easy moves and additions of workstations, flexible configuration changes, traffic control, and improved security.
VLAN (Virtual Local Area Network)
VLANs allow segmentation of a single broadcast domain into multiple broadcast domains in a layer 2 switched network. A VLAN uses virtual boundaries to divide devices into different broadcast domains even if they are physically located on the same switch. Devices within a VLAN can communicate within the broadcast domain but a layer 3 device is required to allow inter-VLAN communication since each VLAN represents a separate IP subnet.
Vlan Types
- Port-based VLANs are commonly used today, where a port is associated with a VLAN.
- Data VLANs carry only user traffic, separating it from voice and management traffic. The default VLAN on Cisco switches is VLAN 1.
- A native VLAN is assigned to trunk ports to handle untagged traffic using VLAN 99 as an example. A management VLAN like VLAN 99 provides switch management access. Voice VLANs use a separate VLAN like VLAN 150 to ensure quality of voice traffic.
VLAN (virtual local area network)
In computer networking, a single layer-2 network may be partitioned to create multiple distinct
broadcast domains, which are mutually isolated so that packets can only pass between them via one or
more routers; such a domain is referred to as a virtual local area network, virtual LAN or VLAN.
A virtual local area network (VLAN) is a logical group of workstations, servers and network devices that
appear to be on the same LAN despite their geographical distribution. A VLAN allows a network of
computers and users to communicate in a simulated environment as if they exist in a single LAN and are
sharing a single broadcast and multicast domain.
Mod8 vlans
VLANs logically segment networks based on functions or project teams, regardless of physical connections. VLANs create broadcast domains by assigning switch ports to VLANs. Routers are used for communication between VLANs. Common VLAN types include port-based VLANs where a device assumes the VLAN of its connected port, and dynamic VLANs where software assigns VLANs based on MAC addresses. VLAN tagging allows a link to carry multiple VLANs by adding a tag to frames to designate VLAN membership.
Lan & vlan
This document provides an overview of local area networks (LANs) and virtual LANs (VLANs). It defines LAN as a network covering a small area like a home, office or campus to connect computers in close proximity. The document discusses common LAN topologies like bus, ring and star. It then introduces VLAN as a way to logically segment devices within a LAN even if they share the same infrastructure. The document explains how VLANs work using tags and trunking between switches. It outlines benefits of VLANs like improved security, flexibility and traffic management compared to traditional LANs.
Advantages of VLAN
VLANs provide several key advantages for network segmentation and security. It reduces broadcast traffic by sending broadcasts only within the relevant VLAN, rather than across the entire network. VLANs also enhance security by restricting each port and user to only communicate within their assigned VLAN, preventing unauthorized access. Additionally, implementing VLAN segmentation is often cheaper than using routers to segment networks into multiple broadcast domains.
Virtual lan
Virtual LANs (VLANs) segment networks logically by assigning ports on a switch to different broadcast domains. This allows broadcast traffic to be contained to specific VLANs rather than flooding the entire network. VLANs can be defined by port, MAC address, IP subnet, or multicast group. Quality of Service can also be implemented using VLAN tags to prioritize certain types of traffic. VLANs provide security and segregation benefits by creating logical boundaries between network segments. They allow networks to scale efficiently while containing broadcast traffic and prioritizing important applications.
Deployment guide1
This document discusses network devices like hubs and switches. It provides details on how hubs operate at the physical layer to pass all traffic between connected segments, while switches can isolate traffic between connected workstations. The document also covers passive network monitoring using port mirroring or network splitters to copy and monitor traffic without affecting the original flow.
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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.
Inter-Vlan Routeando
This document discusses configuring inter-VLAN routing to enable communication between devices on different VLANs. It covers explaining how network traffic is routed between VLANs, configuring inter-VLAN routing on a router by adding subinterfaces for each VLAN and assigning IP addresses, and troubleshooting common inter-VLAN connectivity issues like misconfigured switches, routers, or incorrect IP addressing.
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in the slide we discuss - VLAN overview, effectiveness, benefits, how VLAN work, memberships mode, operations, creation Guidelines, add VLAN, accessing,managing and verifying .
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This chapter will cover how to configure, manage, and troubleshoot VLANs and
VLAN trunks. It will also examine security considerations and strategies relating
to VLANs and trunks, and best practices for VLAN design.
4270 vlan-tutorial
VLANs logically segment networks based on organizational functions rather than physical connections. This allows workstations and servers used by the same workgroup to communicate regardless of location. VLANs restrict communication between different VLAN groups and function by logically segmenting the network into broadcast domains so packets are only switched between ports in the same VLAN. Routers provide security, broadcast filtering, and traffic management between VLANs. VLANs address issues like scalability, security, and network management.
Vlan
VLANs logically segment a local area network (LAN) into separate broadcast domains to limit broadcast traffic and provide additional security. A VLAN uses switches to create isolated network segments and define broadcast domains without changing the physical cabling. VLANs offer benefits like limiting broadcast domains, increased security by separating users, and flexibility to change user assignments by reconfiguring ports on switches instead of moving cables.
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VLAN -VIRTUAL LAN -COMPUTER NETWORKS
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A Local Area Network (LAN) was originally defined as a network of computers located within the same area
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Vlan.pdf
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.
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Vlan
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.
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Switching
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Inter VLAN Routing
Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another VLAN using a
router.
VLANs divide broadcast domains in a LAN environment. Whenever hosts in one VLAN need to
communicate with hosts in another VLAN, the traffic must be routed between them. This is known as
inter-VLAN routing. On Catalyst switches it is accomplished by creating Layer 3 interfaces (Switch virtual
interfaces (SVI)).
2.pptx
VLANs separate layer 2 traffic by assigning hosts to different broadcast domains. This prevents hosts in one VLAN from communicating directly with those in another without additional services like routing. VLANs limit broadcast traffic and can improve security by isolating sensitive data and untrusted devices. VLAN tags are added to Ethernet frames to identify which VLAN a frame belongs to and allow switches to pass traffic between VLANs.
mod8-VLANs.ppt
VLANs logically segment networks based on functions or projects regardless of physical connections. This document defines VLANs, lists benefits like improved security and easier network changes, and explains how VLANs create broadcast domains separated by routers. It also covers configuring static VLANs on Catalyst switches by assigning ports to VLANs, creating VLANs, and verifying configurations with commands like show vlan. Dynamic VLANs assign membership based on device MAC addresses.
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Virtual lan’s (vlan’s)
- 1. Virtual LAN’s (VLAN’s) Presented by: Saad Haseeb
- 2. Some requirements of LANs Need to split up broadcast domains to make good use of bandwidth People in the same department may need to be grouped together for access to servers Security: restrict access by certain users to some areas of the LAN Provide a way for different areas of the LAN to communicate with each other
- 3. Solution using routers Divide the LAN into subnets Use routers to link the subnets BUT Routers are expensive Routers are slower than switches Subnets are restricted to limited physical areas Subnets are inflexible
- 4. Solution using VLANs VLAN membership can be by function and not by location VLANs managed by switches Router needed for communication between VLANs. Layer 3 switch has a switch virtual interface (SVI) configured for each VLAN. These act like router interfaces to route between VLANs.
- 5. VLANs All hosts in a VLAN have addresses in the same subnet. A VLAN is a subnet. Broadcasts are kept within the VLAN. A VLAN is a broadcast domain. The switch has a separate MAC address table for each VLAN. Traffic for each VLAN is kept separate from other VLANs. Layer 2 switches cannot route between VLANs.
- 6. VLAN numbers VLAN 1: default Ethernet LAN, all ports start in this VLAN. VLANs 1002 – 1005 automatically created for Token Ring and FDDI Numbers 2 to 1001 can be used for new VLANs Up to 255 VLANs on Catalyst 2960 switch Extended range 1006 – 4094 possible but fewer features
- 7. Types of VLAN Data or user VLAN Voice VLAN Management VLAN Native VLAN Default VLAN
- 8. Data VLAN Carry files, e-mails, shared application traffic, most user traffic. Separate VLAN for each group of users. Voice VLAN Use with IP phone. Phone acts as a switch too. Voice traffic is tagged, given priority. Management VLAN Has the switch IP address used for telnet/SSH or web access for management purposes. Better not to use VLAN 1 for security reasons. Native VLAN For backward compatibility with older systems. Relevant to trunk ports but Native VLAN does not have a tag. Default VLAN VLAN 1 on Cisco switches. Carries CDP and STP (spanning tree protocol) traffic. Initially all ports are in this VLAN. Do not use it for data, voice or management traffic for security reasons.
- 9. Trunking Both switches have the same 5 VLANs. Do you have a link for each VLAN? More efficient for them to share a link. Traffic for all the VLANs travels between the switches on a shared trunk or backbone Tag is added to the frame when it goes on to the trunk
- 10. Trunk problems Both ends must have the same native VLAN. Both ends must be configured with trunking on or so that trunking is negotiated with the other end and comes on. Subnetting and addressing must be right. The right VLANs must be allowed on the trunk.
- 11. Frame tagging IEEE 802.1Q Dest Add Source Add Type/Len Data FCS Dest Add Source Add Type/Len Data FCSTag Normal frame Add 4-byte tag, recalculate FCS Tag protocol ID 0x8100 Priority CFI for token ring VLAN ID 1 - 4096