1. dhclient -r
This releases the current IP address lease
2. dhclient
This requests a new IP address.
dhcp-client
The device is looking for a DHCP server to obtain a DHCP address.
A client will request an IP address it had previously in a DHCP Discover or Request message with option 50 marked, and an IP address inserted into the data field of option 50.
hardware physical address
DHCP (Dynamic Host Configuration Protocol). A network node can request an IP address from a DHCP server using a broadcast frame. The DHCP server may assign an IP address to the node as well as a subnet mask and default gateway.
Windows Server Family, Linux are some examples. And also there are some routers that have the DHCP service enabled.
Yes. There are a number of ways this can (and in fact does) happen. The most obvious happens in a DHCP request, which is a method by which a computer that does not have an IP address gets an IP address from a DHCP server.
DHCP server must be assigned a static IP address...On a Windows computer you can find out the IP address of the DHCP server that assigned your current IP address by opening a command prompt and typing "ipconfig /all".
yes, one can configure two dhcp server on a same network. But for doing this, one has to define different scopes in both dhcp server in order to avoid ip address conflict. Eg. one can configure a scope for a lan with network address of 10.0.0.0 as- 10.0.0.10- 10.0.0.100 in one dhcp server. while other scope would be 10.0.0.101-10.0.0.200 . In this way we can have to dhcp servers on a same network. Which ever dhcp server receives the request for the ip address will provide the ip address. IN case for servers, one can use mac bindingin both servers so that they obtain same ip address
At the network layer, the protocol commonly used to obtain an IP address is the Dynamic Host Configuration Protocol (DHCP). DHCP allows devices to request and receive an IP address and other network configuration parameters automatically from a DHCP server. This process involves a series of messages exchanged between the client and server, including DHCP Discover, Offer, Request, and Acknowledgment. By using DHCP, devices can join a network with minimal manual configuration.
The dhcpcd daemon or dhclient.
1) Client makes a UDP Broadcast to the server with a DHCPDiscover, or Discover packet. 2) DHCP offers to the client. The server sends a DHCPOffer including other configuration parameters (DHCP Options) for the client per the servers configuration file 3) In response to the offer Client requests the server. The client replies DHCPRequest, unicast to the server, requesting the offered address. 4)The server sends DHCPAck acknowledging the request which is the clients final permission to take the address as offered. Before sending the ack the server double checks that the offered address is still available, that the parameters match the clients request and (if so) marks the address taken. A good reference for DHCP information is Droms and Lemon "The DHCP Handbook". BoydK