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Cloud Computing

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  • Cloud Computing

    What is a cloud router?

  • #2
    Cloud Router is a fully distributed and controlled Google Cloud service that advertises IP address ranges using the Border Gateway Protocol (BGP). Based on BGP advertising received from a peer, it creates bespoke dynamic routes.


    • #3
      Cloud Router's job is to dynamically exchange routes between two Virtual Private Cloud Networks or between two Virtual Private Cloud Networks and on-premises networks. The "Border Gateway Protocol" is used by Cloud Router to exchange routing information between networks.
      Network topology changes in the Virtual Private Cloud Network are automatically propagated to its peer network and vice versa using BGP, so users don't have to manually establish static routes every time the network changes.


      • #4
        The VPN can only be configured using static routes without a Cloud Router. In the VPN tunnel configuration, we must define each subnet to which we want to connect using static routes. Only a small network with stable topologies can use this.

        The following are the main drawbacks of utilizing static routes:
        • A routing table must be created and maintained.
        • When the configuration of either side of the network changes, you must manually add and delete routes.
        • If a link fails, it cannot immediately divert traffic or build a replacement link.
        • Dynamic routing is recommended to prevent all of these overheads, and this is where the Cloud Router comes in.


        • #5
          Dynamic routing's operation
          The Cloud Router is at the heart of dynamic routing. A unique ASN and BGP IP address are required to configure a Cloud Router. This BGP is in charge of dynamically exchanging route information between networks. BGP allows networks to automatically detect topological changes. Changes are made without causing traffic congestion.

          The advantages of dynamic routing
          • It does not require the maintenance of a route database and is suited for networks of any size.
          • If a link fails, it immediately reroutes traffic.
          • Changes in network topology in either network are automatically detected.