1 / 11

IP addressing Számítógép networkok gyakorlata

IP addressing Számítógép networkok gyakorlata. ÓBUDAI EGYETEM 2011 TAVASZI FÉLÉV 3. LABORGYAKORLAT PRÉM DÁNIEL. IP address. Logical addressing 32 bit integer IP address can be split into two parts : network and host ID. IP address properties.

jalena
Download Presentation

IP addressing Számítógép networkok gyakorlata

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IP addressingSzámítógép networkok gyakorlata ÓBUDAI EGYETEM 2011 TAVASZI FÉLÉV 3. LABORGYAKORLAT PRÉM DÁNIEL

  2. IP address • Logicaladdressing • 32 bit integer • IP addresscan be splitintotwoparts: network and host ID

  3. IP addressproperties • Network ID is the same at each host inone network. Host ID has to be different • Routers use the network ID when forwarding packages. • Onehostcanhavemultipleinterfaces– each interface connects to a different network

  4. History of IP classes • Back inthedarkagesthefirst 8 bits were the network ID, the rest wasthehostid • Itwasrealizedsoonhowsmalthatnumber is. • In 1981 theClassful Network achitecturewascreated. Itdescribed 5 classes that were self explanatory from the IP address (A, B, C, D, E) • Scalabilitywas an issue even using this architecture, so in 1993 ”ClasslessInter-DomainRouting” (CIDR) architecturewasinventedwhichusesvariablelengthnetwork ID

  5. IP address classesClassful Network

  6. Private IP ranges • Oftenit is necessarytoconnectdevices to the network, but not to the internet. RFC 1918 managestheprivate IP addressesthatcannot appear on the internet, but are reserved for private use. • Private IP rangesmanagedbyIANA: • example:- 192.168.1.0/24 (mask: 255.255.255.0 | 256 hosts) - 256networks- 172.17.0.0/16 (mask: 255.255.0.0 | 65.536 hosts) 256 networks

  7. Virtualnetworkinterface • Sometimesit is necessaryforhoststoprovideservicesthathaveto be used by itself. • Suchservicesareprovided through the loopback network. • The loopbackdevice is implemented in software only • Canniotappearonthe web • Speciális címe a localhost ami a 127.0.0.1 IP cím.

  8. Network and broadcast addresses • networki cím:IP addressfull of zeroes • xx.xx.xx.0 • Broadcast cím:IP addressfull of ones • xx.xx.xx.255

  9. Subnet mask • Furthersubcategorizethenetwork • 32 bit number

  10. Subnetmaskexample • 192.168.0.0/24 [mask: 255.255.255.0] • 192.168.0.0/22 [maszk: 255.255.252.0] • 192.198.0.0/26 [maszk: 255.255.255.192]

  11. Címzési módok • Unicast: Egy az egynek kapcsolatMinden cím egyedi és központilag kiosztott, emiatt egyértelműen azonosítja a címzettet. • Multicast: Egy a többnek kapcsolatLehetővé teszi az adó számára, hogy az üzenete több címzetthez is eljusson. • Broadcast: Egy mindenkinek kapcsolatA multicast speciális esete, ekkor mindenkinek szól az üzenet, így a network összes eleme beolvassa a csomagot.

More Related