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Tracing A Packet

I have two routers, at a site.  One is an MPLS router, the other is a VPN tunnel that has a GRE tunnel back to my corporate office.  I have policy based routing configured on the site routers.  If I wanted to trace a user's packet, just to make sure that I don't have asynchronous routing, what would be the best approach?  When a user is trying to access a website, the path should go over the VPN tunnel.  When a user is trying to access anything internal (at our corporate location), the path should go over the MPLS link.  I'm afraid that packets destined for the internet are going over the VPN tunnel (which is correct), but coming back through the MPLS link.  I'm not exactly sure how to trace this.  Any help would be much appreciated.  Thanks!

 

Dan

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DanJust do the trace at

Dan

Just do the trace at either end ie.

1) traceroute from the remote site to see which path is taken

2) traceroute from the corporate site back to the source IP of the user to see which path is taken

Jon

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