33: Configuring a GRE interface 
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© Virtual Access 2017 
GW1000 Series User Manual 
Issue: 1.9    Page 308 of 350 
Web: Local Interface 
UCI: network.<if name>.local_interface 
Opt: local_interface 
Specifies which interface is going to be linked with the GRE 
tunnel interface (optional). 
Web: Remote IP address 
UCI: network.<if name>.remote_ip 
Opt: remote_ip 
For point to point tunnels specifies Remote IP address. 
Web: TTL 
UCI: network.<if name>.ttl 
Opt: ttl 
Sets Time-To-Live value on the interface. 
Web: Tunnel key 
UCI: network.<if name>.key 
Opt: key 
Sets GRE tunnel ID key (optional). 
Usually an integer. 
Web: MTU 
UCI: network.<if name>.mtu 
Opt: mtu 
Configures MTU (maximum transmission unit) size of PDUs using 
this interface. 
Table 107: Information table for GRE  
33.2.2  GRE connection: common configuration-advanced settings 
 
Figure 153: GRE advanced settings page