Just configure a *huge* cost on the port of switch 4 going to switch 1. That should do the trick.
Well, if you want to define *huge* in a more precise way, just sum up the cost of the "northbound" ports of the bridges on the alternate path on the right (port leading to sw1 on sw2, port leading to sw2 on sw3 and port leading to sw3 on sw4), and make sure the cost you configure on the port I mention above is higher.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.