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about router in networking

Published in: Education, Technology


  1. 1. Prepared by: Dheeraj Pathak JNU,JAIPUR
  2. 2.  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.
  3. 3.  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.
  4. 4. 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
  5. 5. 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.
  6. 6.  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.
  7. 7.  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.
  8. 8. Thank You!!