1 / 19

Lecture#2 Network Strategies By: Ikram Ud Din E-mail: ikramuddin205@yahoo

Lecture#2 Network Strategies By: Ikram Ud Din E-mail: ikramuddin205@yahoo.com. Frame Relay. Frame Relay. Architecture. Frame Relay Layers. FRAD. VOFR. LMI. Frame relay is a virtual circuit WAN technology Designed in late 1980’s and early 1990’s

turi
Download Presentation

Lecture#2 Network Strategies By: Ikram Ud Din E-mail: ikramuddin205@yahoo

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lecture#2 Network Strategies By:Ikram Ud DinE-mail:ikramuddin205@yahoo.com

  2. Frame Relay

  3. Frame Relay Architecture Frame Relay Layers FRAD VOFR LMI

  4. Frame relay is a virtual circuit WAN technology Designed in late 1980’s and early 1990’s Operates at a high speed (1.544 Mbps and recently 44.376 Mbps) Operates in just physical and data link layers It allows a frame size of 9000 bytes It has error detection at the data link layer only Frame Relay Contt… Frame Relay

  5. Frame Relay network

  6. Frame Relay layers

  7. Note: Frame Relay operates only at the physical and data link layers.

  8. Note: Frame Relay does not provide flow or error control; they must be provided by the upper-layer protocols.

  9. To handle frames arriving from different protocols, Frame Relay uses a device called Frame Relay Assembler/Disassemble (FRAD) A FRAD assembles and disassembles frames coming from other protocols to allow them to be carried by Frame Relay frames FRADs

  10. FRAD

  11. Frame Relay network offers an option called Voice Over Frame Relay (VOFR) that sends voice through the network Voice is digitized through PCM and then compressed. The result is sent as data frames over the network VOFR

  12. Local Management Information (LMI) is a protocol added in early 2000 to the Frame Relay protocol to provide more management features e.g. A keep alive mechanism to check if data are flowing A multicast mechanism to allow a local end system to send frames to more than one remote end system A mechanism to allow an end system to check the status of a switch Provides data transmission Synchronization LMI

  13. High Level Data LinkControl Protocol (HDLC)

  14. HDLC frame

  15. Point-to-PointProtocol: PPP

  16. PPP frame

  17. PAP

  18. CHAP

  19. THANK YOU HAVE A NICE DAY

More Related