Isolating & resolving bandwidth hogs
A leading educational institution has every teaching staff due for an online certification exam in another 2 hours time. Each staff is connected to the Internet over laptops provided by the institution. For the past 30 minutes a huge, unexplained bandwidth spike is keeping the network administrators on tenterhooks. Any slight congestion on the bandwidth would create problems during the online exam. Here’s how the NetFlow Plug–in on OpManager helped.
Further investigation showed that a virus affected application downloaded by the user was flooding the entire network over UDP port. After removing the application, the switch port connecting the user is enabled again.
Outcome: The online certification exam passed off without problems. The NetFlow Plug–in helped identify bandwidth–hogging user and application and together with OpManager’s Switch Port Mapper and switch management functionality, the root cause was isolated, resolved and bandwidth normalcy restored.