Vti Interface - ZyXEL Communications USG FLEX H Series User Manual

Table 67 Network > Interface > Interface > Bridge > Add / Edit (continued)
LABEL
Pool Size
First DNS Server/
Second DNS
Server/ Third DNS
Server
First WINS Server/
Second WINS
Server
Default Router
Lease time
Apply
Reset

7.5 VTI Interface

IPSec VPN Tunnel Interface (VTI) encrypts or decrypts IPv4 traffic from or to the interface according to
the IP routing table.
VTI allows static routes to send traffic over the VPN. The IPSec tunnel endpoint is associated with an
actual (virtual) interface. Therefore many interface capabilities such as Policy Route, Static Route, Trunk,
and BWM can be applied to the IPSec tunnel as soon as the tunnel is active
IPSec VTI simplifies network management and load balancing. Create a trunk using VPN tunnel
interfaces for load balancing. In the following example configure VPN tunnels with static IP addresses or
DNS on both Zyxel Devices (or IPSec routers at the end of the tunnel). Also configure VTI and a trunk on
both Zyxel Devices.
Chapter 7 Interfaces
DESCRIPTION
Enter the number of IP addresses to allocate. This number must be at least one and is
limited by the interface's Subnet Mask. For example, if the Subnet Mask is 255.255.255.0 and
Start IP is 10.10.10.10, the Zyxel Device can allocate 10.10.10.10 to 10.10.10.254, or 245 IP
addresses.
If this field is blank, the Start IP must also be blank. In this case, the Zyxel Device can assign
every IP address allowed by the interface's IP address and subnet mask, except for the first
address (network address), last address (broadcast address) and the interface's IP address.
Specify the IP addresses up to three DNS servers for the DHCP clients to use. Use one of the
following ways to specify these IP addresses.
Custom Defined - enter a static IP address.
ZyWALL - the DHCP clients use the IP address of this interface and the Zyxel Device works as
a DNS relay.
Type the IP address of the WINS (Windows Internet Naming Service) server that you want to
send to the DHCP clients. The WINS server keeps a mapping table of the computer names
on your network and the IP addresses that they are currently using.
If you set this interface to DHCP Server, you can select to use either the interface's IP
address or another IP address as the default router. This default router will become the
DHCP clients' default gateway.
To use another IP address as the default router, select Custom Defined and enter the IP
address.
Specify how long each computer can use the information (especially the IP address)
before it has to request the information again.
Click Apply to save your changes back to the Zyxel Device.
Click Reset to return the screen to its last-saved settings.
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