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The DHCP relay problem

Time:09-30

Due to the production environment used for network segment, want to do the DHCP service by way of relay, but the network administrator does not agree, thinks that need to open the corresponding agreement, there will be a security risk, I remember relay is one-way, DHCP relay service will cause much impact to the network?

CodePudding user response:

This is a profound problem, top

CodePudding user response:

As used in the process of dynamic IP address to obtain the radio sends a request message, so the DHCP is only applicable to the DHCP client and server are on the same subnet; DHCP relay function is introduced to solve this problem, the client can use DHCP relay and other segments of the DHCP server communication, finally get the IP address, in this way, multiple DHCP client on the network can use the same DHCP server, saves cost, and convenient for centralized management,

CodePudding user response:

Since he did not agree, that had to his erect a DHCP server

CodePudding user response:

refer to the second floor weixin_38352739 response:
as used in the process of dynamic IP address to obtain the radio sends a request message, so the DHCP is only applicable to the DHCP client and server are on the same subnet; DHCP relay function is introduced to solve this problem, the client can use DHCP relay and other segments of the DHCP server communication, finally get the IP address, in this way, multiple DHCP client on the network can use the same DHCP server, saves cost, and convenient for centralized management,

Relay like upstairs said that actually, access the address when the client is request address broadcast discover, because it is a radio, so the broadcast domain the DHCP server will not accept the request, relay is the gateway receives the discover by switch radio requests, to switch the gateway address as the source address to send DCHP server to server requests unicast address, server return address to the gateway, the gateway to pass forward to send the request of the client, I felt as if nothing safety risk (maybe, I lack of knowledge is not clear,),
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