Help sought configuring CISCO RV345 L2TP

[MartinPugh15347]

Hello.  Just acquired a CISCO RV345 VPN router.  I am struggling to configure the router for L2TP, specifically, each time I enter the IP address range of my internal clients, the configuration page states 'subnet range error'.

The LAN IP address of my ISP Modem/Router is 192.168.x.x and that assigns an IP address of 192.168.x.x to my CISCO router.

All of my internal clients are on the same subnet i.e as the LAN IP address and I have configured DHCP on the CISCO router to assign IPs accordingly.

But I just cannot figure out why it is coming up with this error.

Any advice appreciated.

Regards

Martin 

[balaji.bandi]

Can you post the screenshot of what have been configured and the error message you get to understand better here.

[Georg Pauwen]

Hello,

the link below describes the procedure to set this up, but it is assuming that your RV345 is the edge device directly connected to the Internet, which is not the case in your scenario, since you have the ISP modem/router in front of your Cisco. The easiest way to accomplish what you want is to put your ISP device in bridge mode, effectively making the RV345 the edge device. What model/brand/type is the ISP modem ?

https://www.cisco.com/c/en/us/support/docs/smb/routers/cisco-rv-series-small-business-routers/smb5850-configure-l2tp-wan-settings-on-the-rv34x-router.html

[MartinPugh15347]

Thanks for the replies.  Unfortunately, I cannot put the CISCO as my edge router as I want to use it primarily for its VPN capabilities.  The modem is from Aussie Broadband model NF18ACV and all the port forwarding rules are configured here.  I have it all working through a TPLINK VPN router but want to migrate to this more capable router.

The problem is that I have a number of clients already configured for 192.168.0.x address range, but each time I try to enter this IP address range into the L2TP server properties on the CISCO router, it comes up with subnet range error.  This does not occur with the TPLINK router.

The CISCO router's DHCP is configured for the same IP address range.

However, I cannot even connect to the L2TP tunnel, never mind access internal clients, so I would like to get over that hurdle first.

regards

Martin