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Chapter 8 Routing
P-661HNU-Fx User’s Guide
171
8.2.1
Add/Edit Static Route
Click
add new Static Route
in the
Routing
screen or click the
Edit
icon next to
a rule. The following screen appears. Use this screen to configure the required
information for a static route.
Figure 66
Routing: Add/Edit
The following table describes the labels in this screen.
Table 34
Routing: Add/Edit
LABEL
DESCRIPTION
Active
Click this to activate this static route.
Route Name
Enter the name of the IP static route. Leave this field blank to delete this
static route.
Destination IP
Address
This parameter specifies the IP network address of the final destination.
Routing is always based on network number. If you need to specify a
route to a single host, use a subnet mask of 255.255.255.255 in the
subnet mask field to force the network number to be identical to the host
ID.
IP Subnet
Mask
Enter the IP subnet mask here.
Gateway IP
Address
You can decide if you want to forward packets to a gateway IP address or
a bound interface.
If you want to configure
Gateway IP Address
, enter the IP address of
the next-hop gateway. The gateway is a router or switch on the same
network segment as the device's LAN or WAN port. The gateway helps
forward packets to their destinations.
Bound
Interface
You can decide if you want to forward packets to a gateway IP address or
a bound interface.
If you want to configure
Bound Interface
, select the check box and
choose an interface through which the traffic is sent. You must have the
WAN interface(s) already configured in the
Broadband
screen.
Apply
Click
Apply
to save your changes.
Back
Click
Back
to exit this screen without saving.
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P-661HNU-Fx User’s Guide
173
C
HAPTER
9
DNS Route
9.1
Overview
DNS (Domain Name System) is for mapping a domain name to its corresponding
IP address and vice versa. The DNS server is extremely important because
without it, you must know the IP address of a machine before you can access it.
In addition to the system DNS server(s), each WAN interface (service) is set to
have its own static or dynamic DNS server list. You can configure a DNS static
route to forward DNS queries for certain domain names through a specific WAN
interface to its DNS server(s). The ZyXEL Device uses a system DNS server (in the
order you specify in the
Broadband
screen) to resolve domain names that do not
match any DNS routing entry. After the ZyXEL Device receives a DNS reply from a
DNS server, it creates a new entry for the resolved IP address in the routing table.
In the following example, the DNS server 168.92.5.1 obtained from the WAN
interface atm0.100 is set to be the system DNS server. The DNS server
10.10.23.7 is obtained from the WAN interface ppp1.123. You configure a DNS
route for *example.com to have the ZyXEL Device forward DNS requests for the
domain name mail.example.com through the WAN interface ppp1.123 to the DNS
server 10.10.23.7.
Figure 67
Example of DNS Routing Topology
WAN
LAN
atm0.100
ppp1.123
DNS:10.10.23.7
DNS:168.92.5.1
sip.service.com
mail.example.com
(Default)
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Chapter 9 DNS Route
P-661HNU-Fx User’s Guide
174
9.1.1
What You Can Do in this Chapter
The
DNS Route
screens let you view and configure DNS routes on the ZyXEL
Device (
Section 9.2 on page 174
).
9.2
The DNS Route Screen
The
DNS Route
screens let you view and configure DNS routes on the ZyXEL
Device. Click
Network Setting > DNS Route
to open the
DNS Route
screen.
Figure 68
Network Setting > DNS Route
The following table describes the labels in this screen.
Table 35
Network Setting > DNS Route
LABEL
DESCRIPTION
Add new DNS
route
Click this to create a new entry.
#
This is the number of an individual DNS route.
Status
This shows whether the DNS route is currently in use or not.
A yellow bulb signifies that this DNS route is in use. A gray bulb signifies
that this DNS route is not in use.
Domain Name
This is the domain name to which the DNS route applies.
WAN Interface
This is the WAN interface through which the matched DNS request is
routed.
Modify
Click the
Edit
icon to configure a DNS route on the ZyXEL Device.
Click the
Delete
icon to remove a DNS route from the ZyXEL Device.
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Chapter 9 DNS Route
P-661HNU-Fx User’s Guide
175
9.2.1
Add/Edit DNS Route Edit
Click
Add new DNS route
in the
DNS Route
screen or the
Edit
icon next to an
existing DNS route. Use this screen to configure the required information for a
DNS route.
Figure 69
DNS Route: Add/Edit
The following table describes the labels in this screen.
Table 36
DNS Route: Add/Edit
LABEL
DESCRIPTION
Active
Select this to activate this DNS route.
Domain Name
Enter the domain name you want to resolve.
You can use the wildcard character, an “*” (asterisk) as the left most part
of a domain name, such as *.example.com. The ZyXEL Device forwards
DNS queries for any domain name ending in example.com to the WAN
interface specified in this route.
WAN Interface
Select a WAN interface through which the matched DNS query is sent.
You must have the WAN interface(s) already configured in the
Broadband
screen.
Apply
Click
Apply
to save your changes.
Back
Click
Back
to exit this screen without saving.
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