Summary: Use Rate-Limiting to Alleviate Link Saturation

Here’s the scenario: you have a remote branch office in Miami that has been running smoothly for months. Today you are getting complaints from the site that relate to phone calls dropping, email and network connectivity being intermittent. Management is pushing your team to get it fixed.

You start by looking closely at the WAN circuit going into the site. You use a program that Cisco introduced called NetFlow. By using this program you are able to determine that the WAN link is being saturated by a particular server to server file transfer. You need a quick fix to this issue. You could go with QoS but that could take some time and input from the site to gather statistics on the critical traffic. Instead you decide to utilize Rate-Limiting on the WAN interface.

Tags: #CiscoChampion, #CiscoEnterprise, #NetworkEngineer

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