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Routers.ppt

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about router in networking

about router in networking

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Routers.ppt Routers.ppt Presentation Transcript

  • Prepared by: Dheeraj Pathak JNU,JAIPUR
  •  Router is a device which connects different networks-frequently over a large distances.  A router is a device that forwards data packets between computer networks, creating an overlay internetwork.
  •  A router is connected to two or more data lines from different networks. When a data packet comes in on one of the lines, the router reads the address information in the packet to determine its ultimate destination.  A data packet is typically forwarded from one router to another through the networks that constitute the internetwork until it gets to its destination node.  It contains a routing table in which all information about the address of connected networks.
  • Router Internal Components Console Auxiliary Interfaces RAM NVRAM Flash ROM RAM - Packet buffers, running configurations, running IOS ROM - Rom Monitor, Baby IOS (Rxboot) NVRAM - Backup configurations, Config register Flash - IOS
  • There are two types of router : Core router:  core router is used to connect different cities.  CISCO 12000 series is ex. of core router. Provide EDGE router:  this router is used to connect users/hosts.  CISCO 7600 series is ex. of provide EDGE router.
  •  Router limits the collision domain.  Router can function on LAN & WAN  Router can connects different media& architectures.  Router can determine best path/route for data to reach the destination.  Router can filter the broadcasts.
  •  Router is more expensive than Hub, Bridge & Switch.  Router only works with routable protocol.  Routing updates consume bandwidth.  Increase latency due to greater degree of packet filtering.
  • Thank You!!