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| Chapter 7 Interfaces |
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| Table 51 Network > Interface > Tunnel > Add/Edit (continued) | |
| LABEL | DESCRIPTION |
| Tunnel Mode | Select the tunneling protocol of the interface (GRE, |
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| Section 7.6 on page 140 for more information. |
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| IP Address | This section is available if you are configuring a GRE tunnel. |
| Assignment |
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| IP Address | Enter the IP address for this interface. |
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| Subnet Mask | Enter the subnet mask of this interface in dot decimal notation. The subnet mask |
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| indicates what part of the IP address is the same for all computers in the network. |
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| Metric | Enter the priority of the gateway (if any) on this interface. The ZyWALL decides which |
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| gateway to use based on this priority. The lower the number, the higher the priority. If |
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| two or more gateways have the same priority, the ZyWALL uses the one that was |
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| configured first. |
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| IPv6 Address | This section is available if you are configuring an |
| Assignment |
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| IPv6 Address/ | Enter the IPv6 address and the prefix length for this interface if you want to use a static |
| Prefix Length | IP address. This field is optional. |
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| The prefix length indicates what the |
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| computers in the network, that is, the network address. |
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| Metric | Enter the priority of the gateway (if any) on this interface. The ZyWALL decides which |
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| gateway to use based on this priority. The lower the number, the higher the priority. If |
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| two or more gateways have the same priority, the ZyWALL uses the one that was |
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| configured first. |
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| 6to4 Tunnel | This section is available if you are configuring a 6to4 tunnel which encapsulates IPv6 to |
| Parameter | IPv4 packets. |
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| 6to4 Prefix | Enter the IPv6 prefix of a destination network. The ZyWALL forwards IPv6 packets to |
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| the hosts in the matched network. |
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| If you enter a prefix starting with 2002, the ZyWALL will forward the matched packets |
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| to the IPv4 IP address converted from the packets’ destination address. The IPv4 IP |
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| address can be converted from the next 32 bits after the prefix you specified in this |
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| field. See 6to4 Tunneling on page 141 for an example. The ZyWALL forwards the |
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| unmatched packets to the specified Relay Router. |
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| Relay Router | Enter the IPv4 address of a 6to4 relay router which helps forward packets between |
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| 6to4 networks and native IPv6 networks. |
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| Remote | Enter the IPv4 network address and network bits of a remote 6to4 gateway, for |
| Gateway Prefix | example, 14.15.0.0/16. |
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| This field works if you enter a 6to4 Prefix not starting with 2002 (2003 for example). |
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| The ZyWALL forwards the matched packets to a remote gateway with the network |
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| address you specify here, and the bits converted after the 6to4 Prefix in the packets. |
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| For example, you configure the 6to4 prefix to 2003:A0B::/32 and the remote gateway |
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| prefix to 14.15.0.0/16. If a packet’s destination is 2003:A0B:1011:5::8, the ZyWALL |
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| forwards the packet to 14.15.16.17, where the network address is 14.15.0.0 and the |
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| host address is the remain bits converted from 1011 after the packet’s 6to4 prefix |
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| (2003:A0B). |
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| Gateway Settings |
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| My Address | Specify the interface or IP address to use as the source address for the packets this |
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| interface tunnels to the remote gateway. The remote gateway sends traffic to this |
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| interface or IP address. |
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| Remote | Enter the IP address or domain name of the remote gateway to which this interface |
| Gateway | tunnels traffic. |
| Address |
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| Automatic displays in this field if you are configuring a 6to4 tunnel. It means the 6to4 |
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| tunnel will help forward packets to the corresponding remote gateway automatically by |
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| looking at the packet’s destination address. |
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| 145 |
ZyWALL 110/310/1100 Series User’s Guide | |
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