This topic define the characteristics and functions of the data attach frame. Start discovering CCNA 200-301 for totally free right now!!

Note: Welcome: This object is component of chapter 6 the the Cisco CCNA 1 course, for a far better follow up of the food you deserve to go come the CCNA 1 ar to guide you v an order.

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The Frame

This topic discusses in information what wake up to the data attach frame together it moves with a network. The information appended come a structure is figured out by the protocol gift used.

The data connect layer prepares the encapsulated data (usually one IPv4 or IPv6 packet) for transport across the regional media by encapsulating it v a header and a trailer to develop a frame.

The data link protocol is responsible for NIC-to-NIC interactions within the very same network. Although over there are many different data connect layer protocols that describe data link layer frames, each frame type has three straightforward parts:


Unlike other encapsulation protocols, the data link layer appends info in the kind of a trailer at the end of the frame.

All data connect layer protocols encapsulate the data within the data field of the frame. However, the framework of the frame and the fields consisted of in the header and also trailer vary according come the protocol.

There is no one structure structure the meets the requirements of all data transportation across all types of media. Depending upon the environment, the quantity of control information necessary in the structure varies to match the accessibility control needs of the media and also logical topology. Because that example, a WLAN framework must encompass procedures because that collision avoidance and also therefore requires added control information when contrasted to one Ethernet frame.

As shown in the figure, in a fragile environment, more controls are necessary to for sure delivery. The header and trailer areas are bigger as more control info is needed.

instances of class 2 protocols

Glossary: If you have doubts around any one-of-a-kind term, you can consult this computer network dictionary.

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