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How does a dhcp client know that a lease has expired and how is it renewed ??

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How does a dhcp client know that a lease has expired and how is it renewed ??
posted Dec 11, 2013 by Mona Sharma

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1 Answer

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When a client receives an IP it also receive a lease duration from the DHCP server, when the client holds IP for half of the assigned lease duration (If the lease duration is 8 hrs and the client completed 4 hrs) then the client sends request packet which then receive ack packet for renewing it for next 8 hrs. If the client was unable to communicate with the DHCP server for the complete 8 hrs then the IP is flushed and the client again performs DORA process to get a new IP.

answer Aug 2 by anonymous
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