Keeping local network access when connected to VPN

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http://serverfault.com – I'm working on a local server ( from my network. The problem is that I also need to be connected to a VPN in order to gain access to private web services. But, when I'm launching Cysco VPN Client, my local server can no longer communicate with other local computers, including mine, and I'm disconnected from it. How can I use the VPN connection on a server/computer and still be recognize in my local network ? I already tried to add new routes with the command line : "route add ..." ( http://www.howtogeek.com/howto/windows/adding-a-tcpip-route-to-the-windo... ) but i (HowTos)