MRP WebUI Interface

This section describes how to configure Media Redundancy Protocol (MRP) on the switch using the WebUI.

MRP (Media Redundancy Protocol) is a networking protocol designed to implement redundancy and recovery in a ring topology. MRP is designed to react deterministically on a single failure on a switch in the MRP ring. An MRP instance is configured between two ports known as ring ports and can act as manager or client in the ring. The MRP node which is configured as Manager has the responsibility of avoiding the loop in the ring by making one ring port as blocking and other as forwarding. The convergence time of MRP is very fast as compared to spanning tree protocols. On a port, either MRP can be enabled or spanning tree may be selected.

The ring size may consist of up to 50 devices while still meeting the 200 ms reconfiguration requirement.

To access MRP screens, go to Layer2 Management > MRP.

Global Settings

The Global Settings screen is used to enable or disable MRP on the switch.

Figure 1. Global Settings


Screen Objective This screen allows the user to enable or disable MRP.
Navigation

Layer 2 Management > MRP > Global Settings
Fields
  • Global Status— select Disable or Enable to change the status of the protocol.
Buttons
  • Apply—modifies attributes and saves the changes.

MRP Configuration

Figure 2. MRP Configuration


Screen Objective This screen allows the user to create, modify, and delete a ring instance. These parameters are necessary for the configuring the ring mode and ring ports. This configuration page can be used to create a ring instance with VLAN ID or modify the VLAN ID on the existing ring instance. VLAN ID is an optional parameter such as name and domain ID. Configuring VLAN ID on this page, enables MRPRING protocol to sent the signaling frames (test and control) with IEEE 802.1Q VLAN tags with the given VLAN and priority of 7.
Navigation

Layer 2 Management > MRP > Configuration
Fields
  • Ring ID—the ring identifier of the MRP instance. This is a numeric value with a range of 1 through 2.
  • Mode—a drop-down list with the following options:
    • Disabled
    • Client—enter this to configure MRP instance as client (MRC) in the MRP ring, which forwards the test frames between the ring ports.
    • Manager—enter this to configure MRP instance as manager (MRM) in the MRP ring, which generates the test frames on both ring ports and handles/avoid the loop.
    • Manager-Autocomp—enter this to configure MRP instance as manager auto (MRA) in the MRP ring. It competes with the other MRA nodes in the ring to become MRM based on priority. If priority is the highest, it turns to act as MRM else turn MRC.
  • Ring Port 1—this is a drop-down selector for the port to be selected as Port 1 of the ring.
  • Ring Port 2—this is a drop-down selector for the port to be selected as Port 2 of the ring.
  • Priority—this is a value between 0 and 65535, Enter to configure MRP priority to be manager (MRM) in the ring, in case auto manager is enabled.
  • UUID—enter this to configure MRP UUID as 32 octet string (hex). The UUID is a 128-bit identifier unique to a domain/ring. All MRP instances belonging to the same ring must have the same domain ID.
  • Vlan ID (1-4094)—enter a number from 1 to 4094 to assign a Vlan ID to a ring instance.
  • Name—an optional field that assigns a name to the ring configuration.
Buttons
  • Add—adds the configuration to the switch.
  • Reset—clears the fields in the form
  • Modify—by selecting a configuration with the radial button and then clicking modify, the user will be able to edit a configuration.
  • Delete—the user first selects a configuration with the radial button and then clicks delete to remove it.

MRP Status

Figure 3. MRP Status Screen


Screen Objective The status of the ring is displayed in the MRP status page. In addition to the status, the page also displays any errors in the received MRP packets.
 
Navigation

Layer 2 Management > MRP > Status
Fields
  • Ring ID—displays the Ring ID.
  • Admin Mode—displays the admin mode of the ring.
  • Ring Port 1—displays the ring port of the ring.
  • Ring Port 2—displays the ring port of the ring.
  • Port 1 State —displays the port 1 state.
  • Port 2 State—displays the port 2 state.
  • Ring State—displays the ring state.
  • Multiple MRM Error—displays MRM Errors state. This error is indicated by an MRM when more than one MRM are active in the MRP ring. Possible values are as follows:
    • false—no multi-MRM error
    • true—more than one MRM present in the ring
  • Single Side Error—displays Single Side Error state. This error also indicated by an MRM when the test frames of an MRM have been seen, but only on one ring port.
    • false—no one Side Rx error
    • true—test frame received only on one ring port
Buttons
  • Refresh—refreshes the table.