MW-Ring redundancy technology

05 June 2024 Knowledge Base

MW-Ring is a redundancy system based on a ring topology that provides automatic switching to a backup route in the event of a failure of the main communication channel. This minimizes downtime and ensures uninterrupted data transfer.

Key functions and features:

  • Fast recovery: MW-Ring ensures rapid restoration of communication in the event of a loss of one of the connections, usually within 20 milliseconds
  • Supports multiple rings: The system supports the ability to create multiple rings, which allows increasing network scalability
  • High performance: MW-Ring is optimized for high load environments and provides low data transfer latency
  • Configuration flexibility: Ability to configure different topologies and operating modes to optimally meet specific requirements

    Supported topologies

    Features and precautions when using MW-RING:

    • MW-Ring only works with MAIWE switches
    • The following functions cannot be activated simultaneously with MW-Ring running on a port: EAPS/ERPS/MSTP/Port Aggregation
    • Speed limiting and the Port mirroring function on ports used in the MW-Ring should be disabled
    • It is recommended to use as few network groups as possible
    • MW-Ring V1 and V2 versions are not compatible with each other
    • After activating MW-Ring, the switch with the lowest MAC address will be selected as the root

    Principle of operation

    • Once configuration begins, the root switch is first selected. When manually assigned, the switch with a lower priority becomes the root switch; if priority is not set, then the switch with the lowest MAC address becomes the root switch
    • The root switch sends a Hello packet. If the network is normal, after receiving a Hello packet from the port, the traffic forwarding function of the secondary port is disabled, only the ring network protocol message is listened to, and the network is closed in a loop
    • If the connection fails and the secondary port does not receive a Hello message within a specified Fail-time period, the secondary port's traffic forwarding feature will be enabled and the connection will be restored
    • If the physical link is restored, step 2 will be repeated and the root switch will block the secondary port again to prevent data looping

    Simple ring configuration

    The method for setting up the redundancy mode in the switch's web interface is quite simple and consists of several steps:

    • MW-RING function activation
    • Choosing the ring ID
    • Selecting the Primary port and the Secondary port
    • You can stop at the previous stage, but if necessary, you can also configure additional parameters:
      • Hello-time – send loop to send HELLO packet
      • Fail-time - the maximum delay from the time the primary port sends a Hello message until the secondary port receives the Hello message. If the message is not received within the specified time, the switch will determine that the connection is down
      • Priority – priority of the switch by which the root switch is selected

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