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文件名称：帧中继协议栈-CCNA中文版PPT
文件大小：10.75MB
文件格式：PPT
更新时间：2021-04-25 17:53:05
CCNA
帧中继协议栈
OSI 参考模型
帧中继
Physical
Presentation
Session
Transport
Network
Data Link
Application
EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA/TIA-530
Frame Relay
IP/IPX/AppleTalk, etc.
*
Purpose: This figure compares Frame Relay to the OSI model.
Emphasize: The same serial standards that support point-to-point serial connections also support Frame Relay serial connections.
Frame Relay operates at the data link layer.
Frame Relay supports multiple upper-layer protocols.