Among the reserved VLANs, VLANs 4064 to 4071 are used for port mirroring, and VLAN 4095 is used by the system to forward packets inside a device. Other reserved VLANs are used for function extension in later versions. In addition, Layer 3 interfaces are available on CE switches and use ...
Among the reserved VLANs, VLANs 4064 to 4071 are used for port mirroring, and VLAN 4095 is used by the system to forward packets inside a device. Other reserved VLANs are used for function extension in later versions. In addition, Layer 3 interfaces are available on CE switches and use ...
VLAN aggregation introduces the concept of sub-VLANs and super-VLANs. A sub-VLAN is an independent broadcast domain that contains only physical interfaces, whereas a super-VLAN contains no physical interface and is used for creating a Layer 3 VLANIF interface. By mapping a super-VLAN to sub...
How to manage and configure VLANs The purpose of a virtual LAN is to provide a helpful layer of intercommunication within LANs and associated devices. Switch ports are essential components of this type of network configuration and help group multiple devices from distinct LANs. This way, communicat...
VLAN frame format In a traditional Ethernet data frame, the destination MAC address and source MAC address are followed by the upper-layer protocol type field. As shown in the figure, DA indicates the destination MAC address, SA indicates the source MAC address, and Type indicates the protocol...
Virtual Local Area Network (VLAN) technology logically divides a physical LAN into multiple broadcast domains, each of which is called a VLAN. Each VLAN functions as a separate broadcast domain, with devices in the same VLAN able to directly communicate with one another, while those in different...
A VLAN, like the LAN it sits atop, operates at Layer 2 of the network, the Ethernet level. VLANs partition a single switched network into a set of overlaidvirtual networksthat can meet different functional and security requirements. This partitioning avoids the need to have multiple, distinct...
How to manage and configure VLANs The purpose of a virtual LAN is to provide a helpful layer of intercommunication within LANs and associated devices. Switch ports are essential components of this type of network configuration and help group multiple devices from distinct LANs. This way, communicat...
A VLAN is a logical network segment that groups devices on the same Layer 2 domain. A VLAN creates a separate broadcast domain and can improve network performance, security, and management. A VLAN is identified by a number between 1 and 4094. An SVI is a logical interface on a Layer 3 ...
Layer 3 switches are slower:Layer 3 switches are slower than Layer 2 switches, which can be a concern when spanning VLAN over multiple switches to support diverse tenants and visualization. Lack of flexibility:Because Layer 3 switches route at the access layer, each VLAN will be tied to one ...