This release does not require that you have
a symmetric network path for the traffic returning from the data
center or headquarters location by way of a service connection.
By default, existing deployments require symmetric network paths.
This release allows you to specify Backbone Routing options
to disable symmetric routing and, for 2.0 and 2.1 Innovation, load
balance asymmetric service connection flows if you have sites with
multiple service connections. If you enable these capabilities in
your deployment, you should determine the impact of any service
connection routing changes before you enable asymmetric routing.