What are the different types of frame tagging?
Two trunking protocols are usually used today for frame tagging:
- Inter-Switch Link (ISL) – Cisco’s proprietary VLAN tagging protocol.
- IEEE 802.1q – IEEE’s VLAN tagging protocol. Since it is an open standard, it can be used for tagging between switches from different vendors.
What is difference between ISL and DOT1Q?
ISL is cisco proprietary and presently it is supported only by few high end switches only. Dot1Q is an IEEE’s open standard, which be used to create trunk connection between switches of different vendors. In ISL the original ethernet frame is not modified, it is encapsulated between an ISL header and an FCS.
What is encapsulation DOT1Q Cisco?
IEEE 802.1Q encapsulation is configurable on Ethernet and EtherChannel interfaces. IEEE 802.1Q is a standard protocol for interconnecting multiple switches and routers and for defining VLAN topologies. Use the encapsulation dot1q command in subinterface range configuration mode to apply a VLAN ID to the subinterface.
Which are the two main types of encapsulation trunking protocols choose two?
There are two trunking protocols: 802.1Q: This is the most common trunking protocol. It’s a standard and supported by many vendors. ISL: This is the Cisco trunking protocol.
What is frame tagging and different types of frame 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.
What is the difference between tagged frame and untagged frame?
VLAN-enabled ports are generally categorized in one of two ways, tagged or untagged. These may also be referred to as “trunk” or “access” respectively. The purpose of a tagged or “trunked” port is to pass traffic for multiple VLAN’s, whereas an untagged or “access” port accepts traffic for only a single VLAN.
What is probiotic encapsulation?
Probiotic encapsulation technology (PET) is an exciting field of biopharmacy that has emerged and developed rapidly in the past decade. Based on this technology, a wide range of microorganisms have been immobilized within semipermeable and biocompatible materials that modulate the delivery of cells.