I am working as network analyst of a Organization with multiple agencies connected Organizations centrally located data center.
One of our agency Public Library having network congestion and performance issue, Noticed that one of the uplink port connected to data centre is over utilized and configured one more port to load balance between two ports. Though it has two links, still we notice the link chock with 90% of utilization for 5 mins rate.
How to trace what is the root cause ? Did sniffer capture and looks like we have valid traffic, we have this over utilization happens daily between 1:00 PM to 5:00 PM EST.
Can you provide some built in cisco commands to trace the source or root cause.