What is a transit VLAN?

Transit VLAN is not an official term. It usually refers to a VLAN that’s only use is to provide layer 2 connectivity between two or more networking devices, like a router and a firewall if they are connected via a switch.

What is a VLAN for dummies?

VLAN is a logical grouping of networking devices. When we create VLAN, we actually break large broadcast domain in smaller broadcast domains. Consider VLAN as a subnet. Same as two different subnets cannot communicate with each other without router, different VLANs also requires router to communicate.

What is VLAN and explain briefly how it works?

Virtual Local Area Networks (VLANs) separate an existing physical network into multiple logical networks. Thus, each VLAN creates its own broadcast domain. Communication between two VLANs can only occur through a router that is connected to both. VLANs work as though they are created using independent switches.

What is transit network?

A transit network is a network that bridges a connection between two other networks, and passes traffic for its own network.

What is a transit switch?

An FCoE transit switch does not encapsulate or decapsulate FC frames in Ethernet. It is an access switch that transports FC frames that have already been encapsulated in Ethernet between FCoE initiators such as servers and an FCoE forwarder (FCF), which is in an FC storage area network (SAN).

How do VLANs communicate with each other?

A device called a router handles requests for devices to communicate when not belonging to the same VLAN. This function is called interVLAN routing. The router will have programmed an IP (Internet protocol) address on each of it’s connected VLAN networks.

What is the difference between a LAN and a VLAN?

LAN stands for Local Area Network is a group of network devices which allow the communication between connected devices. On the other hand VLAN stands for Virtual Local Area Network which is used to enhance the performance of LANs (Local Area Networks).

How can you communicate between VLANs?

There are three methods of permitting traffic to flow between VLANs:

  1. Configure a router and connect a single interface to a switch per VLAN configured.
  2. Configure a router to use IEEE 802.1Q and connect to a switch via a trunk.
  3. Configure (and possibly purchase) a Layer 3–capable switch.

How does IP transit work?

IP transit is a service where an Internet Service Provider (ISP) allows traffic to cross its network to reach a destination. To have access to all Internet routes, you would need to connect directly with all autonomous systems. This isn’t possible on your own.