Ethernet
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Ethernet Link Redundancy via Smart-Probing enhances the 2020 SBC’s ability to initiate a switchover due to a failure in the network. Currently the IMG 2020 employs a link based Ethernet Redundancy scheme. In the current scheme, the IMG 2020 would initiate a switch-over such as from interface Data A0 to Data A1 located on the rear of the system. With the addition of this feature the IMG 2020 can be configured to employ a probe-based detection scheme. In this scheme, the IMG 2020 would probe a set of pre-configured endpoints (send an ARP request packet). The endpoints would then reply with a Gratuitous ARP packet. These packets inform the IMG 2020 that the endpoints are still alive. If the IMG 2020 sends out an ARP Request Packet and does not receive a Gratuitous ARP in return it will continue to send ARP Requests until the pre-configured number of requests is met. If at that time no Gratuitous ARP’s are sent back then a switchover to its Hot Standby Port (Data A1 in this case) will be initiated. If the switchover solves the problem, then calls will continue to be processed on the new switched-over port. However, if the issue is not solved, the IMG 2020 would continue to switch back and forth between Data A0 and Data A1 (ping pong effect) until the issue in the network is solved. The feature is enabled through the Web GUI and can be enabled on any of the network interfaces (CTRL, Data A, Data B).
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Right click on the IMG 2020:Node object and select New Network. An IP Network object pane will appear. No configuration is needed here. The IP Network object is a parent or container object and no configuration is required here. Refer to the IP Network Interface topic for more information on this object.
Right click on the IP Network object and select New Logical Interfaces. Under the Logical Interfaces object, multiple Logical Interface objects can be created. The Logical Interface object is a parent or container object and no configuration is required. Refer to the Logical Interfaces topic for more information on this object.
Right click on the Logical Interfaces object and select New Logical Interface. Select which interface (Control, Data A, or Data B) will be configured by selecting the interface from the drop down menu of the Interface field. This will be the interface that the Smart Probe feature will be configured on. Refer to the Logical Interface topic for more information on this object.
Right click on the Logical Interface object and select New Smart Probe Detection. Refer to the screen capture and information below.
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