How do I connect two switches with a VLAN?

Create the VLANs:

Table of Contents

Open a web browser.
In the address bar of the web browser, type the IP address of the switch and press Enter.
Type the admin password of the switch and click Login.
Go to Switching – VLAN – Advanced – VLAN Configuration.
In the VLAN ID field, type the ID of the VLAN you wish to create and click Add.

How do 2 different VLANs communicate?

Two separate VLANs must communicate through a layer-3 device, like a router. Devices on a VLAN communicate with each other using layer-2. Layer-3 must be used to communicate between separate layer-2 domains.

What is VLAN trunking used for?

VLAN trunking enables the movement of traffic to different parts of the network configured as a VLAN. A trunk is a point-to-point link between two network devices that carry more than one VLAN. With VLAN trunking, you can extend your configured VLAN across the entire network.

How do I assign a trunk to a VLAN?

SUMMARY STEPS. enable. configure terminal.
interface interface-id. switchport mode trunk. switchport trunk allowed vlan {add | all | except | remove} vlan-list.
end. show interfaces interface-id switchport. copy running-config startup-config.

How do you trunk a VLAN?

To enable trunk links, configure the ports on either end of the physical link with parallel sets of commands. To configure a switch port on one end of a trunk link, use the switchport mode trunk command. With this command, the interface changes to permanent trunking mode.

Can 2 VLANs communicate without a router?

No, they cannot. A router is must to communicate between different VLANs/networks. A L2 switch is enough if you want to transmit packets within a single VLAN. But, if there are multiple, then the VLANs need to be identified by each other which is done only by a router.

Can two VLANs have the same IP address?

The OSA-Express Layer 2 implementation allows the hosts to manage IP addresses and ARP cache, so it is possible to have a single guest LAN segment (or VSWITCH segment) where two different hosts use the same IP Address on different VLAN groups.

How do I allow multiple VLANs on the trunk port?

Trunks carry the traffic of multiple VLANs over a single link and allow you to extend VLANs across an entire network. To correctly deliver the traffic on a trunk port with several VLANs, the device uses the IEEE 802.1Q encapsulation (tagging) method that uses a tag that is inserted into the frame header.

What are the advantages of VLAN trunking?

VLANs provide the following advantages:

VLANs enable logical grouping of end-stations that are physically dispersed on a network.
VLANs reduce the need to have routers deployed on a network to contain broadcast traffic.
Confinement of broadcast domains on a network significantly reduces traffic.

How many trunk VLANs can trunk link carry?

All VLAN IDs, 1 to 4094, are allowed on each trunk. However, you can remove VLANs from the allowed list, preventing traffic from those VLANs from passing over the trunk.

How many trunk ports are there?

There’s no limitation on the number of trunk ports you can configure. However, there is a switch-wide limitation of 64 instances of Spanning Tree. In other words, you can only have 64 active VLANs on the switch.

What is a VLAN trunk with example?

The VLANs can communicate with each other via the trunking connection between the two switches using the router. For example, data from a computer on VLAN A that needs to get to a computer on VLAN B (or VLAN C or VLAN D) must travel from the switch to the router and back again to the switch.