Quick Answer: Can You Trunk A Switch To A Router?

How do I enable trunking on my router?

Router on a Stick ConfigurationUse the interface type number.

Use the encapsulation dot1q vlan_id command to enable 802.1Q trunking and associate each VLAN with the subinterface.Use the ip address address mask command to configure the IP settings..

What is trunking in switch?

A trunk port allows you to send all those signals for each switch or router across a single trunk link. In contrast to an access port, a trunk port must use tagging in order to allow signals to get to the correct endpoint. Trunk ports typically offer higher bandwidth and lower latency than access ports.

Does a router on a stick configuration require a VLAN trunk?

In this tutorial I’ll show you how you can use a router connected to a single switch as a “router on a stick”. On the switch we have VLAN 10 and VLAN 20 and there’s only a single cable between the router and switch. The router needs access to both VLANs so the link between the router and switch will be a trunk!

What is 802.1 Q trunking?

IEEE 802.1Q (sometimes referred to as 1Q or DOT1Q) is a industry standards based implementation of carring traffic for multiple VLANs on a single trunking interface between two Ethernet switches. 802.1Q is for Ethernet networks only. Unlike ISL, 802.1Q does not encapsulate the original Ethernet frame.

What is VLAN trunking?

VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLAN) on the whole local area network. To do this, VTP carries VLAN information to all the switches in a VTP domain. VTP advertisements can be sent over 802.1Q, and ISL trunks.

When would you use a trunk port?

Trunk port allows us to switch multiple VLANs but in Access port all frames are in the same VLAN. Trunk port basically used to connect between switches however, the access port is used to connect computer laptops, printers, etc. We cannot extend the data from one switch to another switch, access ports via a trunk port.

What is Switchport mode trunk?

Switchport trunk means when you have a trunk link, all VLANs are allowed to pass through a trunk link. To configure a trunk on a switch FastEthernet port, use the switchport mode trunk command.

How many VLANs can you have?

In total there can be 4096 VLANs. Among these, VLAN 1 is default; this means all the untagged traffic would move from here. VLAN 1002–1005 are reserved for token ring.

How do I enable VLAN on my router?

To enable VLAN routing and configure the ports. Routing –> IP –> Interface Configuration. To enable routing for the ports and configure their IP addresses and subnet masks. To enable routing for the switch and specify the router ID.

Can a Layer 3 switch replace a router?

All in all, it is not recommended to replace a router with layer 3 switch, but you can apply them in the same network at the same time. … However, those switches are costly, and most layer 3 switches just have Ethernet ports. In this way, a dedicated router is cost-effective than a layer 3 switch.

Can a trunk port be assigned to a VLAN?

A trunk port can have two or more VLANs configured on the interface; it can carry traffic for several VLANs simultaneously.

Can different 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 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.

Why use a router on a stick?

ROUTER-ON-A-STICK, also known as a “one-armed router” is a method for running multiple VLANs over a single connection in order to provide inter-VLAN routing without the need of a Layer 3 switch. Essentially the router connects to a core switch with a single interface and acts as the relay point between networks.

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 find the VLAN on my router?

You can use the show vlan id [vlan#] command to see information about a particular VLAN. Below you can see a sample output of the show vlan command. information on the particular interface as well as the interfaces administrative and operational mode (access or trunk mode).

Can a switch port be access and trunk?

When the port is in trunk mode, then any “switchport access” statements are not used. The same is true with a port in access mode with any “switchport trunk” statements. In this case, you should be able to safely remove it. The purpose for this is usually in the use of DTP (dynamic trunking protocol).

How do you bypass a VLAN on a router?

The simplest way to enable routing between the two VLANs to simply connect an additional port from each VLAN into a Router. The Router doesn’t know that it has two connections to the same switch — nor does it need to. The Router operates like normal when routing packets between two networks.

Is router on a stick bad?

The disadvantages to a Router on a Stick Network are: It is more complex to set up compared to other networks. Traffic between VLANs goes into the router and out of the router through the same port. The trunk is a major source of congestion.

What is difference between VLAN access and trunk mode?

access port – a port that can be assigned to a single VLAN. The frames that arrive on an access port are assumed to be part of the access VLAN. … trunk port – a port that is connected to another switch. This port type can carry traffic of multiple VLANs, thus allowing you to extend VLANs across your entire network.

What is VLAN on router?

A virtual LAN (VLAN) is a local area network that maps devices on a basis other than geographic location, for example, by department, type of user, or primary application. Traffic that flows between different VLANs must go through a router, just as if the VLANs are on two separate LANs.