What is a path vector routing?

Q.  What is a path vector routing?
- Published on 19 Oct 15

a. network routing protocol
b. inter-domain routing
c. exterior gateway protocol
d. None of the above

ANSWER: network routing protocol


  • Prajakta Pandit   -Posted on 12 Oct 15
    Path vector routing is a computer network routing protocol which maintains the path information that gets updated dynamically.

    - Link state routing needs a huge amount of resources to calculate routing tables. It also creates heavy traffic because of flooding. Path vector routing protocol is used to avoid this problem.

    - BGP (Border Gateway Protocol) is an example of a path vector protocol.

    - In BGP the routing table maintains the autonomous system that are traversed in order to reach the destination system.

    - Exterior Gateway Protocol (EGP) does not use path vectors.

    - Path vector routing consists three phases:
    1. Initiation
    2. Sharing
    3. Updating

    - Each entry in the routing table contains the destination path. Path vector routing is different from Link state routing.

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