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- IEEE 802. 1Q – VLAN Tagging and Trunking in Networking
IEEE 802 1Q – VLAN Tagging and Trunking in Networking IEEE 802 1Q is the networking standard that defines VLAN (Virtual Local Area Network) tagging on Ethernet frames VLANs allow network administrators to segment a physical network into multiple logical networks, improving security, efficiency, and management
- vlan 0, 1, and 4095 are reserved: what are they reserved for?
Wikipedia agrees that vlans 0 and 4095 are reserved This article says that Cisco reserves vlan 1 (in addition to vlans 0 and 4095) But I am having trouble finding good information on what are these vlans reserved for? and or why they are reserved? Please include good authoritative sources please or references to the spec
- Different types VLAN - Cisco Learning Network
Dynamic VLAN - LIke MAC-based, dynamic VLANs do not have a specific VLAN ID range assigned Instead, VLAN membership is dynamically assigned by a VMPS (VLAN Membership Policy Server) based on the MAC address or user authentication Private VLAN (PVLAN) - PVLAN use a combination of primary and secondary VLANs
- If Native VLAN is Not Used Then . . . . - Cisco Learning Network
The recommendation is use an unused vlan as native vlan It implies doesn't create an interface vlan derived of the native vlan If you configure on the trunk interface a specific vlan as native (example vlan 11), then the traffic of the vlan 11 through of trunking will be untagged, on the other hand, the traffic of another vlans will be tagged (included vlan 1)
- Best Practices for Inter-VLAN Routing in CISCO
In this discussion, lets explore the best ways to set up Inter-VLAN Routing on Cisco devices, using simple explanations and clear examples to help configure network efficiently
- Why and how are Ethernet Vlans tagged?
In reality a VLAN tag is inserted in the Ethernet frame like this: The 802 1Q (dot1q, VLAN) tag contains a VLAN-ID and other things explained in the 802 1Q Standard The first 16 bits contain the "Tag Protocol Identifier" (TPID) which is 8100 This also doubles as the EtherType 0x8100 for devices that don't understand VLANs
- What are the differences between Native Vlan vs Default Vlan vs Vlan 1?
The default VLAN is always set to VLAN 1 and it is the VLAN that comes pre-configured on every switch (Cisco, HP, etc) The concept behind this is that the switch needs at least one VLAN to operate as a switch hence the reason for VLAN 1 It is also worth noting that all ports are configured to be part of VLAN 1 unless configured EXPLICITLY for another VLAN The default VLAN CANNOT be changed
- What is the Native VLAN used for? - Cisco Learning Network
The native vlan is most useful when going to study voip As one port on the switch will connect to the IP phone, and a PC will connect to the phone So we end up having two devices attached to the same port What ends up happening is a vlan is made for the phones, which is prioritised, and the data traffic (from the PC) is left untagged This is one commonly known way of using the native vlan
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