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RDP via a VPN connection failes with new switches and IP phones.

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Netstudent

IS-IT--Management
Dec 21, 2007
18
US
Okay so we just put in a 4550 stack, and a 5510 and a 5520. As of right now, almost all users are in the 4550 stack. The only configs that we have done on this stack was made it a stack of course, gave it a stack IP, used 2 GIG ports on Unit1 as a bundled MLT (which is up and functioning with no errors). NO vlans, no Qos yet, no rate limiting, no extra PoE settings, no port level security yet.

The 4550 stack trunks to the 5510. Then connected to the 5510 we have our Internet Firewall, MPLS router, DC's, RAS server, application server.

Since we have went live with these new PoE switches and IP phones, all VPN users have lost the ability to RDP into their machines after successfully establishing a PPTP VPN from their remote locations. Like from home, I can connect via the vpn, I can get authenticated through our RAS server which is also a domain controller. BUT, I can't RDP directly into my Workstation. What is wierd though is that I *CAN* rdp into the RAS server because it is my default gateway for the PPTP VPN. **Then from the RAS server, I can launch another RDP session to my Worktsation. We have no problems RDP'ing around the network internally. It's only through the VPN connection directly to a Workstation via hostname or IP. (Not a DNS issue)

We haven't changed anything on our Internet firewall yet, we haven't changed anything under the routing and remote access console in Server2003 on the RAS server.

The only thing we have done was installed the new switches , added IP phones to the network, and reconnected the servers and call manager server to their own 5510 switch. DHCP has changed to reflect the phones, but we are having no probelms getting a inside local IP for the VPN tunnel interface on the VPN client.

Sorry about the long description, but does anyone have any ideas to check? Any suggestions? I just can;t figure out what could be causing the connectivity failure because it seems that all VPN specific devices and configurations have not changed. I don't get how I can establish a VPN connection, but I can't RDP through that tunnel directly to a workstation.
 
Nevermind we figured it out. I said DHCP had changed. Well one of the IP phones took the IP for the RAS ppp interface. Changed the IP and walla.
 
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