DHCP
2012-08-16 11:31:53 10 举报
DHCP(Dynamic Host Configuration Protocol,动态主机配置协议)是一种网络协议,用于自动分配IP地址和其他网络配置信息给网络设备。当一个设备连接到网络时,它会发送一个DHCP请求,请求一个可用的IP地址。DHCP服务器收到请求后,会从其地址池中分配一个可用的IP地址给该设备,并返回其他必要的网络配置信息,如子网掩码、默认网关和DNS服务器地址。这样,设备就可以自动获取并配置网络连接,无需手动设置。DHCP协议简化了网络管理,提高了设备的可移动性和灵活性。
作者其他创作
大纲/内容
Discover没有request address
Select oneOffer
Host Reaction
send Offer packet
No
Server
EndStop Using This IP Addr
ServerReceive Packet
send Discover packet (again)
ReceiveNAK
Send ACK
no
Test for IP collision
If no collision
Receive Request
Offer
Discover中带有request address
Already have lease information?
Receive Offer Packets
Wait for 5 Minutes
50%Time Up?
Set timer T2(87.5% of lease)
Send Qequest
ACK
Start
Send NAK Packet
Response?
Keep a Record
ServerStatus
Set timer T1(50% of lease)
Yes
Host
Discover
HostStatus
Compare
Reuqest
OK?
Use this one
Yes And No ACK
ReceiveACK
Bind IP&MAC
Wait for 1 Second
Alreadysend 4 packet?
DHCP工作流程 (By Richard Zhao)
Send Request Packet
87.5%Time Up?
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