Gre Tunnel Support; Figure 85: L2Tp Tunnel Configuration - L2Tp Client - D-Link DSR-250N User Manual

Unified Services Router
the user can access Status > Active VPN page and establish L2TP VPN tunnel
clicking Connect. To disconnect the tunnel, click Drop.
A L2TP VPN can be established through this router. Once enabled a L2TP server is
available on the router for LAN and WAN L2TP client users to access. Once the
L2TP server is enabled, L2TP clients that are configured with the remote L2TP
network server range (IP address and Netmask) can reach an endpoint router's L2TP
server. Once authenticated by the L2TP server (the tunnel endpoint), L2TP clients
have access to the local network managed by the router.
Figure 85: L2TP tunnel configuration – L2TP Client
6.5

GRE Tunnel Support

Setup > VPN Settings > GRE Tunnel Configuration
GRE tunnels allow for broadcast traffic on the LAN of the router to be passed over
the internet and received by remote LAN hosts. This is primarily useful in the D-
Link Discovery Protocol (DDP) application where broadcast traffic from one LAN
host is to be received by all LAN hosts in the local subnets of the GRE endpoints.

Note the following limits for the number of supported GRE tunnels per product:
DSR-150/150N:
o
DSR-250/250N:
o
DSR-500/500N:
o
DSR-1000/1000N:
o
5
10
15
20
123
User Manual