Path vector routing in Networking

Q.  Which of the following statements is/are true about path vector routing?
- Published on 19 Oct 15

a. Path vector routing is similar to the link state router.
b. Exterior Gateway Protocol (EGP) is used in Path Vector.
c. Maintains the path information and gets updated dynamically.
d. Not flexible in selecting the path while hiding the information.

ANSWER: Maintains the path information and gets updated dynamically.

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    Discussion

  • 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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