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. Independent logical systems can be ...
Switches forward tagged frames toward their destinationmedia access control address, forwarding only to ports with which the VLAN is associated. Broadcast, unknown unicast and multicast traffic is forwarded to all ports in the VLAN.Trunklinks between switches know which VLANs span the switches, accept...
Trunk port(Tagged): A VLAN trunk port is a networking port that is used to carry traffic for multiple VLANs (Virtual Local Area Networks) over a single physical connection. Trunk ports are often used to connect switches, routers, and other networking devices in a network, and are typically...
dot1q: If a dot1q sub-interface receives a single-tagged VLAN packet, the sub-interface forwards only the packet with a specified VLAN ID. If a dot1q sub-interface receives a double-tagged VLAN packet, the sub-interface forwards only the packet with a specified outer VLAN ID. ...
is an 802.1Q concept that enables a vlan not getting tagged on a 8021.q trunk link for backward compatibility with devices not 802.1Q aware.When a switch receives a frame on a trunk link with no tag it categorizes this frame as part of the native vlan that was configured on the trunk...
B. It designates VLAN 999 for untagged traffic. C. It blocks VLAN 999 traffic from passing on the trunk. D. It designates VLAN 999 as the default for all unknown tagged traffic. 相关知识点: 试题来源: 解析 B 正确答案:B解析:native vlan是不打标签的VLAN,这指定native vlan 为999,表明 ...
When a frame travels in a trunk, a special VLAN tag is added to the frame to identify what VLAN it belongs to. As the frame arrives at the end of the trunk link, the tag is removed and it is then sent to the correct access link port according to the switch's table. Access ports...
After configuring the connection between the router and the VLAN switch as a trunk link, the router can receive frames with VLAN tags on the trunk interface from the connected switch, and forward the routed packets out to VLAN tagged destinations via the same interface. Inter-VLAN Routing with...
A GLOBAL VLAN ID is OSA's VLAN support to provide access to a virtual LAN segment for a VLAN unaware host so the host can receive and send its network traffic. This host does not tag its outbound frames nor receive tagged inbound frames. The GLOBAL VLAN ID participates on the VLAN tran...
3. Forwarding Layer 2 Frames: A switch equipped with the native VLAN can forward any Layer 2 frame received on a trunk port, regardless of whether it is tagged or untagged, to the intended VLAN. 4. Drop Unencapsulated Frames: Any unencapsulated frames arriving on a trunk port are immediate...