Configuring and Verifying Bi-directional Forwarding Detection Functionality in WCDMA Base Transceiver Station

The network protocol BFD (Bidirectional Forwarding Detection) that detects issues between duplet forwarding engines. With minimum overhead, it detects flaws in physical media that doesn't allow for any kind of finding defects, including Ethernet, MPLS label switched channels, tunnels, and virtual circuits. One of the features is to verify the functionalities of static BFD. The work modes in BTS are Asynchronous mode, Demand mode, Echo mode. Currently only Asynchronous mode is supported in WBTS. BFD can be configured in two ways: Single hop and multi hop. Configured and commissioned the BTS & TRS setup in SEM tool and configured BFD in SEM (Site Element Manager) tool. BTS has come ON AIR and CS (Circuit Switch) PS (Packet Switch) calls are processing. Here we are checking the functionality of BFD whether it detects faults properly or not and removing routing connection from router side and check BFD alarm show up or not in SEM. Several calls are successfully placed after functionality check. Complete BFD process setting up and functionality check is automated. Where its check switch and router configuration as precondition and then perform BTS commissioning, checks BTS RNC BFD alarms and also placed call automatically. For switch, router configuration check and Wireshark log collection several key words are designed in Robot framework format so that script can be easily understandable by anyone. Configuring and verifying BIDIRECTIONAL FORWARDING DETECTION functionality in WCDMA Base Transceiver station (WBTS) is done manually and automated the complete process.