Question: How Can Two VLANs Communicate?

Can two VLANs have the same subnet?

No, VLANs don’t require different subnets.

Different subnets require different subnet addresses if they ever need to be able to route and/or talk to each other) and by extension if one VLAN wants to talk to a different VLAN it must use different addresses so we can make a routing decision to the right place..

Can VLANs be hacked?

VLAN is based on Layer 2 “Data link” of the OSI Model. The OSI layers are independent of each other and they communicate with each other. If any one of the layer gets compromised the other layers also fail. The VLAN is on the Data Link layer, which is as vulnerable to attacks as any other layer on the OSI model.

What is the difference between a subnet and a VLAN?

A VLAN is an Ethernet level concept, a subnet is an IP level concept. A VLAN splits an Ethernet network into multiple logically seperate Ethernet networks. … It is common practice to have a 1:1 mapping between subnets and VLANs but it is perfectly possible to have multiple subnets on the same VLAN.

Can a device be on two VLANs?

A trunk port, on the other hand, will pass traffic on a configurable set of VLANs, but all the traffic will be VLAN-tagged. So, to your case of two devices in two different VLANs on the same switch, both using addresses on the same IP subnet.

How do you communicate two different VLANs without a router?

In order to perform communication between two different vlans we require a router or mls. But it is possible to provide communication between two different vlans without using any layer 3 device. This concept is based upon tagging / untagging frames.

Can VLAN see each other?

OK so I hope I explain this correctly. The issue is that None of the IP phones can ping the computers and vice versa. The reason the phones are on the seperate internet connection is so that if we eat all the bandwidth on the EdgeMAX which only have like 20MBPS it doesn’t degrade the phones.

Can I create VLAN on router?

The new VLAN is added to the configuration. Select Routing> VLAN > VLAN Routing. From the VLAN menu, select the VLAN that you just created. In the IP address field, type the IP address that you want to assign to the VLAN routing interface.

What is a trunking?

Trunking is a technique used in data communications transmission systems to provide many users with access to a network by sharing multiple lines or frequencies. As the name implies, the system is like a tree with one trunk and many branches. … Trunking reduces the size of a telecom network and increases bandwidth.

Does a VLAN need an IP address?

VLANs and Address Plan As each VLAN is a different network, they need their own address subnet (IPv4 and IPv6). The Campus Core switch will route between each VLAN (so called L3-switch: an ethernet switch which has some L3 routing capability). These IP addresses are also documented in the master IP address plan.

Can you have same IP address on different VLAN?

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 VLANs communicate?

2 Answers. Two separate VLANs must communicate through a layer-3 device, like a router. Devices on a VLAN communicate with each other using layer-2. … When a host on one VLAN wants to send something to a host on another VLAN, it must use a layer-3 (e.g. IP) address.

Can you have multiple VLANs on one port?

You can create multiple VLANs on the Switch. By default, you can assign One Access Vlan (Data) and One Voice vlan on the switch port.