What is encapsulation dot1q command?

What is encapsulation dot1q command?

Router(config-subif)# encapsulation dot1q 1. Enables IEEE 802.1Q encapsulation of traffic on a specified subinterface in VLANs, and defaults the associated VLAN as a native VLAN. Step 3. Router(config-subif)# bridge-group bridge-group. Assigns each network interface to a bridge group.

How do you bypass a VLAN on a router?

VLAN Routing with Router 802.1Q Trunks

1. Use a router, with one router LAN interface and cable connected to the switch for each and every VLAN (typically not used)
2. Use a router, with a VLAN trunk connecting to a LAN switch (known as router-on-a-stick, or ROAS)
3. Use a Layer 3 switch with switched virtual interfaces (SVI)

Can you create a VLAN on a router?

You can configure the software to allow traffic on a VLAN to be treated as if the VLAN were a router port. A port can be either a VLAN port or a router port, but not both. However, a VLAN port may be part of a VLAN that is itself a router port. Section , Configuring VLAN Routing via Web Interface.

How do you negotiate trunking?

Enabling Trunking

1. Enable the trunk: COS. set trunk mod/port [auto | desirable | on | nonegotiate | off] IOS. (global) interface type mod/port.
2. Specify the encapsulation method: COS. set trunk mod/port [negotiate | isl | dot1Q] IOS.
3. (Optional) Specify the native VLAN: COS. set vlan number mod/port. IOS.

Do you need a router for VLAN?

VLANs don’t need routers to communicate. Well, they usually do, but not necessarily. They just need some “external help”.

How do you force trunking on an interface?

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.

How does Dot1q encapsulation work on a router?

Routers only support Dot1Q encapsulation. Now we configure the router’s Fa0/1 interface to act as a trunk. First, we remove the ip address on the physical interface. Next, we configure a subinterface for each VLAN the link will be a trunk for. The interface number can be anything you want.

Can a router be a trunk on a switch?

First, we will configure the port connected to 2611XM’s Fa0/1 interface to be a trunk on the switch. Routers only support Dot1Q encapsulation. Now we configure the router’s Fa0/1 interface to act as a trunk.

Can a 2620 Cisco router perform subintreface F0 / 0.1?

I am trying to config a 2620 Cisco router to perform subintreface (F0/0.1) for Vlan Trunk Protocol, however when I try to configure the encapsulation dot1q, I continue to receive error massage with ^ symbol below the ‘ c ‘ See below, the platform version is a 12.3 (26) which should be acceptable to perform an (encapsulation dot1q).

Can a 2600 router support 802.1Q trunking?

No Reza it’s a FastEthernet. Besides, there’s a particular IOS which allows Ethernet interface on a 2600 router to support 802.1q trunking. Don’t remember which particular version. 03-27-2012 07:44 PM 03-27-2012 07:44 PM 03-27-2012 08:05 PM 03-27-2012 08:05 PM Yes. The only thing I remember was that it has to be on a “T” train.