Cisco's OER (or Performance Routing as it is now called) is a routing method that can monitor exit links and pick the best path based upon multiple factors.  The idea here is to monitor the utilization of an exit and move the traffic back and forth to keep it balanced (as much as possible).... [More]

I had originally intended to cover the dual inbound NAT and OER in the same part. I have changed this because I wanted to spend a little more time on the NAT part. I have read a lot on EE and other places that this is not an easy task. I would like to prove otherwise. the most important... [More]

I am going to do this is a multi-part format because there are so many options and possibilities. The router I am using in this example is actually an emulated 2691 running under dynamips. I have configured this router using the SDM for use with a single ISP (fairly common configuration). Le... [More]

While it is possible to put two routes in place with the secondary having a higher metric, this may not always work. In the event of a failure that does not bring down the physical interface on the router the primary route is not removed. There is also the situation where the primary interface tak... [More]