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          合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。
          廣告
        
                        
                
  

                

                
    
                
        
                
                            [TOC]

# 簡介

每一層利用下一層提供的服務來為上一層提供服務,本層服務的實現細節對上層屏蔽

![](https://box.kancloud.cn/ed84db175eee4cecee06abd34d1d175b_657x331.png)

# 層與協議

![](https://box.kancloud.cn/4a0c41d3a3a2d8b3349c0d29976cb3fe_424x410.png)

* ARP: 正向地址解析協議,**通過知道的ip,尋找對應主機的mac地址**
* RARP: 反向地址轉換協議,通過mac地址確定ip地址
* ip: 是互聯協議
* icmp: 控制報文協議
* igmp: 組管理協議,運行在主機和組播路由器之間

![](https://box.kancloud.cn/0891cc144906824e448ce8ef6e42d3dc_430x265.png)


 


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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