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SCOPES   OF DYNAMIC HOST CONFIGURATION  PROTOCOL
[object Object],DHCP  Scope
Scopes determine which IP addresses are provided to the clients. Scopes should be defined and activated before DHCP clients use the DHCP server for its dynamic IP configuration. You can configure as many scopes on a DHCP server as is required in your network environment.  Scopes…
[object Object],[object Object]
A DHCP scope consists of a pool of IP addresses on a subnetwork, such as 10.223.223.1 to 10.223.223.200, that the DHCP server can lease to DHCP clients.  Each physical network can have only one DHCP scope or a superscope with one or more ranges of IP addresses.  DHCP Scope and Subnet …
TYPES OF SCOPE ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Using Superscopes ,[object Object],[object Object]
Situations for which superscopes are useful  ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Multicast scope
 
DHCP Scope Properties Network ID :  The network ID for the range of IP  addresses . Subnet mask :  The subnet mask for the network ID Network IP address range :  The range of IP addresses  that are available.
Lease duration :  The period of time that the DHCP server holds a leased IP address for a client before removing  the lease. Router   A DHCP option that allows DHCP clients to access remote networks. DHCP Scope Properties …..
DHCP Scope Properties ….. Scope name :  An alphanumeric identifier for administrative purposes.  Exclusion range :  The range of IP addresses in the scope that is excluded from being leased.
Reserving IP Addresses ,[object Object],[object Object]
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.47 180.130.54.45 Here the black computer wants to register itself on the network. So it sends a request packet to the dhcp server requesting an IP address
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 It broadcasts DHCPDISCOVER msg over local network with dest address 255.255.255.255
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 The packet contains MAC address, source port, dest ip address, port,and transaction id.
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Each network has a relay agent or dhcp server The req recievd from the black system is processed by dhcp server or agent. Others ignore it.
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Relay agents r configured wit the ip address of dhcp server
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Agent will forward the msg from black computer to dhcp server
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Dhcp contains a pool of ip addresses that can be leased to hosts on demand
DHCP server Ip address pool Various scopes
DHCP server Ip address pool Various scopes To subnet 1 To subnet x
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Server sends ip address, default gateway, subnet mask
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Dhcp ip address Client’s MAC, new ip addrss and information.
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Relay agent pass the msg from server to the  black computer
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Now the client has a new ip adress. It has to renew it time to time. 160.50.50.4
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 160.50.50.4
DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 160.50.50.4
 
scope
Scope and Administrator ,[object Object],[object Object]
Administrator plans the  Scopes based on the needs of particular groups of users, with appropriate lease durations defined for the related scopes.  Scope and Administrator…
Characteristics  of scopes ,[object Object],[object Object]
Characteristics  of scopes… ,[object Object],[object Object]
DHCP scopes makes all the clients happy .
THANK YOU
 

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Dynamic Host Configuration Protocol

  • 1. SCOPES OF DYNAMIC HOST CONFIGURATION PROTOCOL
  • 2.
  • 3. Scopes determine which IP addresses are provided to the clients. Scopes should be defined and activated before DHCP clients use the DHCP server for its dynamic IP configuration. You can configure as many scopes on a DHCP server as is required in your network environment. Scopes…
  • 4.
  • 5. A DHCP scope consists of a pool of IP addresses on a subnetwork, such as 10.223.223.1 to 10.223.223.200, that the DHCP server can lease to DHCP clients. Each physical network can have only one DHCP scope or a superscope with one or more ranges of IP addresses. DHCP Scope and Subnet …
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.  
  • 12. DHCP Scope Properties Network ID : The network ID for the range of IP addresses . Subnet mask : The subnet mask for the network ID Network IP address range : The range of IP addresses that are available.
  • 13. Lease duration : The period of time that the DHCP server holds a leased IP address for a client before removing the lease. Router A DHCP option that allows DHCP clients to access remote networks. DHCP Scope Properties …..
  • 14. DHCP Scope Properties ….. Scope name : An alphanumeric identifier for administrative purposes. Exclusion range : The range of IP addresses in the scope that is excluded from being leased.
  • 15.
  • 16. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 17. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.47 180.130.54.45 Here the black computer wants to register itself on the network. So it sends a request packet to the dhcp server requesting an IP address
  • 18. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 19. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 20. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 21. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 It broadcasts DHCPDISCOVER msg over local network with dest address 255.255.255.255
  • 22. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 23. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 24. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 25. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 26. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 27. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 28. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 The packet contains MAC address, source port, dest ip address, port,and transaction id.
  • 29. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Each network has a relay agent or dhcp server The req recievd from the black system is processed by dhcp server or agent. Others ignore it.
  • 30. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Relay agents r configured wit the ip address of dhcp server
  • 31. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Agent will forward the msg from black computer to dhcp server
  • 32. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 33. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 34. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 35. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Dhcp contains a pool of ip addresses that can be leased to hosts on demand
  • 36. DHCP server Ip address pool Various scopes
  • 37. DHCP server Ip address pool Various scopes To subnet 1 To subnet x
  • 38. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Server sends ip address, default gateway, subnet mask
  • 39. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45
  • 40. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Dhcp ip address Client’s MAC, new ip addrss and information.
  • 41. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Relay agent pass the msg from server to the black computer
  • 42. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 Now the client has a new ip adress. It has to renew it time to time. 160.50.50.4
  • 43. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 160.50.50.4
  • 44. DHCP SERVER RELAY AGENT 160.50.50.1 160.50.50.2 160.50.50.3 Switch 180.130.54.45 180.130.54.45 160.50.50.4
  • 45.  
  • 46. scope
  • 47.
  • 48. Administrator plans the Scopes based on the needs of particular groups of users, with appropriate lease durations defined for the related scopes. Scope and Administrator…
  • 49.
  • 50.
  • 51. DHCP scopes makes all the clients happy .
  • 53.