CTEK Z4200U SkyRouter - Manual (Page 41)

2 March 2014
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4.4.3 GRE Tunneling Services
Figure 29 - GRE Tunneling Configuration
Tunnel Select – Places GRE tunnel in operation. Options are None, Tunnel 1, Tunnel 2, Both Tunnel 1 and Tunnel 2
WAN MTU/MRU – Adjusts MTU (Maximum Transmission Units) and MRU (Maximum Receive Units) for 24 bytes of
tunnel overhead. Options are Increase for tunnel overhead or Do not increase
TTL Value – The time in seconds that a packet will remain alive in the tunnel. 255 is the recommended setting for normal
operation.
Remote Router IP – The network (routable) address of the remote router on the network
Remote Subnet IP – The base address of the subnet of addresses connected through the tunnel
Net Mask (next to Remote Subnet IP) – The mask limiting the range of addresses on the remote subnet
Remote Tunnel IP – The address used to construct the remote end of the GRE tunnel