Comparison of Datagram and Virtual Circuit Subnet

Posted By on October 22, 2014


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Distance Vector Routing Protocol
1-bit Sliding Window Protocol

 

 Datagram  Virtual Circuit
 Connection Setup  None  Required
 Addressing  Packet contains full source and destination address  Packet contains short virtual circuit number identifier.
 State Information  None other than router table containing destination network  Each virtual circuit number entered to table on setup, used for routing.
 Routing  Packets routed independently  Route established at setup, all packets follow same route.
 Effect of Router Failure  Only on packets lost during crash  All virtual circuits passing through failed router terminated.
 Congestion Control  Difficult since all packets routed independently router resource requirements can vary.  Simple by pre-allocating enough buffers to each virtual circuit at setup, since maximum number of circuits fixed.
Distance Vector Routing Protocol
1-bit Sliding Window Protocol

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Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com