DHCP

DHCP
Dynamic Host Configuration Protocol
What is DHCP?
• DHCP Dynamic Host Configuration Protocol
एक client/server प्रोटोकॉल है जो network
host को automatically IP addresses provide
करता है |
• DHCP Client Server Model पर based है |
What are the advantages of DHCP?
Advantages of DHCP Server.
• Centralized IP- address management
• Provide automatically IP-Address for client
• Make administration easy.
What is DHCP Scope?
DHCP scopes are used to define ranges of
addresses from which a DHCP server can
assign IP addresses to clients.
Give some devices which act as DHCP
Server?
• ADSL Router (MODEM)
• Router
• Server PC
Name different types of DHCP Scope
in windows?
• Normal Scope-it is used to assign IP-Address
Range for v Class A,B & C network including
subnet masks, exclusions and Reservation,
• Multicast Scope-it is used to assign IP-Address
Range for class D networks.
– Multicast scope doesn’t have subnet
Reservation or other TCP/IP Options.
masks,
• Super scope- essentially a collection of scoops
grouped together such that they can be enabled
or disabled as a single entity.
What is address pool?
Address range for distribution is called address
pool.
What is address leases?
Address leases define client IP Address,
Computer Name, lease expiration date etc.
What are IP-reservations?
It provides information for a reserved client. For
this MAC address of client pc is required.
What is exclusion range?
IP-Address in this range will not assign to any
client pc. These IP-Addresses excluded from
distribution.
What is the use of filter in DHCP
Server?
• Allow—DHCP Services are provided to any
MAC addresses in this list.
• Deny---DHCP Server are denied to any MAC
addresses in this list.
What is DORA Process in DHCP?
Ans. DORA process explains that how DHCP assign IP-address for the
client. DORA is the combination four processes.




Discover
Offer
Request
Acknowledge
In this process client broadcast a discover message to all network devices
to find out the DHCP server. Discover message contains source port no 68
and destination port no 67. DHCP server received this message and
broadcast offer message to all the network devices but this message
contains MAC address of the client PC, only this PC read the message in
this message DHCP server offer IP-Address for the client. After reading
offer message client pc again broadcast a request message to the DHCP
server and request for the offered IP-Address. DHCP Server read this
message and broadcast an acknowledgement message and assigns an IPaddress on the client PC this whole process is called DORA process.
What is DORA Process in DHCP?