We have a level 3 switch, Catalyst 4507R. On int fa3/3 there is a router connected, on int fa3/4 there is another router connected for redundancy. It is somehow configured so that if the first one goes down the second automatically takes over. I would like to test if the "backup router" is up and running and funtional in a slightly less brutal way than to pull out the cable during operation. Im thinking that there should be a way to do this, maybe by using Extended ping? I dont have access to the routers, they belong to and are being administrated by the service provider. Is there any way to "redirect" e.g a trace command to the ip address of the backup router? Any comments are greatly appreciated, thanks in advance!