What is frame tagging in VLANs?

What is frame tagging in VLANs?

VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. The Trunk Links allow frames from all VLANs to travel throughout the network backbone and reach their destination regardless of the VLAN the frame belongs to.

What is frame tagging?

Frame tagging is used to identify the VLAN that the frame belongs to in a network with multiple VLANs. The VLAN ID is placed on the frame when it reaches a switch from an access port, which is a member of a VLAN. That frame can then be forwarded out the trunk link port.

What is VLAN tagging used for?

VLAN tagging is a method through which more than one VLAN is handled on a port. VLAN tagging is used to tell which packet belongs to which VLAN on the other side. To make recognition easier, a packet is tagged with a VLAN tag in the Ethernet frame.

What is a VLAN frame?

VLAN Frame tagging is a technology which is used to identify the VLAN that the packet belongs to. The VLAN Frame tag is placed on the Ethernet frame when the Ethernet frame reaches a switch from an access port, which is a member of a VLAN.

Is VLAN tagging layer 2?

VLANs are data link layer (OSI layer 2) constructs, analogous to Internet Protocol (IP) subnets, which are network layer (OSI layer 3) constructs.

What is a VLAN tag?

VLAN Tagging VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link.

Where does the VLAN ID go on the frame?

The VLAN ID is placed on the frame when it reaches a switch from an access port, which is a member of a VLAN. That frame can then be forwarded out the trunk link port.

What is frame tagging and how does it work?

Frame tagging explained. Frame tagging is used to identify the VLAN that the frame belongs to in a network with multiple VLANs.

What are the different VLAN frame trunking technologies available?

There are different VLAN frame trunking technologies available. • Inter-Switch Link (ISL): Cisco proprietary VLAN frame tagging. No much support from other vendors. Supported only in old Cisco Switch models. • IEEE 802.1Q: IEEE industry standard VLAN frame tagging