Frame Relay Prof Choong Seon HONG Kyung Hee
- Slides: 35
Frame Relay Prof. Choong Seon HONG Kyung Hee University 1
18. 1 개요(계속) v Bursty data requires what is called bandwidth on demand Kyung Hee University 4
18. 1 개요(계속) v개선된 전송매체로 인한 오버헤드 감소(광케이블) v. X. 25 트래픽 Kyung Hee University Data and data link acknowledgment Network layer confirmation and acknowledgment 5
18. 1 개요(계속) v X. 25와 프레임 중계 비교 Feature X. 25 Frame Relay Connection establishment At the network layer None At the data link layer None At the network layer None Fixed Bursty Multiplxing At the network layer At the data link layer Congestion control Not necessary Necessary Hop-by-hop flow control and error control End-to-end flow control and error control Data rate Kyung Hee University 7
18. 2 프레임 중계 동작(계속) q PVC(permanent Virtual Circuit) v Virtual circuit in Frame Relay is called a data link connection identifier (DLCI) v 네트워크 제공자 (Network provider)에 의해 DTE간에 설정 Kyung Hee University 12
18. 2 프레임 중계 동작(계속) q SVC 연결에 필요한 DLCI Kyung Hee University 14
18. 3 프레임 중계 계층 구조(계속) q 프레임 중계 프레임 EA 0 : meaning that another address byte is to follow. DE 1 : not to discard this frame Kyung Hee University 19
18. 4 혼잡 제어(계속) q FECN(Forward Explicit Congestion Notification) v트래픽 혼잡이 일어났다는 것을 수신자에게 경고하는데 사용 Kyung Hee University 22
18. 5 leaky bucket 알고리즘(계속) q 출력율을 제어하는 교환기 Kyung Hee University 26
18. 5 leaky bucket 알고리즘(계속) q Flowchart for leaky bucket algorithm The counter is set to the amount of data that can be out in one tick Kyung Hee University 27
18. 5 leaky bucket 알고리즘(계속) q 알고리즘 동작 예 Kyung Hee University 28
18. 6 트래픽 제어 q 트래픽 제어가 필요한 경우 v. BECN 비트나 FECN 비트를 설정할 때 v. DE 비트를 설정해야 할 때 v프레임을 폐기해야 할 때 q 트래픽 제어 속성 v접속율(access rate) : access rate for T 1 is 1. 544 Mbps v허용 버스트 크기(Committed burst size: Bc) v허용 정보율(Committed information rate: CIR) v초과 버스트 크기(excess burst size : Be) Kyung Hee University 29
18. 6 트래픽 제어(계속) q Bc와 Bc+Be에 대한 사용율 Kyung Hee University 32
18. 7 그밖의 특성(계속) q FRAD(Frame Relay Assembler/Disassembler) v다른 프로토콜로부터 도착한 프레임 처리를 위해 사용 Kyung Hee University 34
18. 7 그 밖의 특성(계속) q VOFR(Voice Over Frame Relay) v음성 통신을 위해 사용 q LMI(Local Management Information) v보다 많은 관리 특성 제어를 위해 제공 Kyung Hee University 35
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Choong seon hong
- Kyung hee university hospital at gangdong
- Html q
- Kyung hee university mba
- Address cont'd
- Atm frame relay
- Frame relay frame format
- Frame relay frame format
- X25 frame relay
- Frame relay wikipedia
- Frame relay and x.25
- Frame relay caracteristicas
- Frame relay and atm
- Frame relay packet tracer
- Frame relay caracteristicas
- Frame relay lmi
- Frame relay vs atm vs mpls
- Frame relay vs vpn
- Frame relay osi
- Advantages and disadvantages of frame relay
- Ccna frame relay
- Protocolo lapd
- Frame relay wan
- Frame relay architecture
- Frame relay packet switching
- Frame relay overview
- Captain kyung
- Seon api
- Choong joseph family