Zyxel P-2612HNU-F1F PLDT Router Manual PDF (Setup & Configuration Guide)

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8

Routing

8.1

Overview

The ZyXEL Device usually uses the default gateway to route outbound traffic from

computers on the LAN to the Internet. To have the ZyXEL Device send data to

devices not reachable through the default gateway, use static routes.

For example, the next figure shows a computer (

A

) connected to the ZyXEL

Device’s LAN interface. The ZyXEL Device routes most traffic from

A

to the

Internet through the ZyXEL Device’s default gateway (

R1

). You create one static

route to connect to services offered by your ISP behind router

R2

. You create

another static route to communicate with a separate network behind a router

R3

connected to the LAN.

Figure 64

Example of Static Routing Topology

WAN

R1

R2

A

R3

LAN

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8.2

Configuring Static Route

Use this screen to view and configure IP static routes on the ZyXEL Device. Click

Network Setting > Routing

to open the

following

screen.

Figure 65

Network Setting > Routing

The following table describes the labels in this screen.

Table 34

Network Setting > Routing

LABEL

DESCRIPTION

Add New

Static Route

Click this to set up a new static route on the ZyXEL Device.

#

This is the number of an individual static route.

Active

This indicates whether the rule is active or not.

A yellow bulb signifies that this static route is active. A gray bulb signifies

that this static route is not active.

Status

This shows whether the static route is currently in use or not. A yellow

bulb signifies that this static route is in use. A gray bulb signifies that this

static route is not in use.

Name

This is the name that describes or identifies this route.

Destination IP

This parameter specifies the IP network address of the final destination.

Routing is always based on network number.

Gateway

This is the IP address of the 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.

Subnet Mask

This parameter specifies the IP network subnet mask of the final

destination.

Interface

This is the WAN interface through which the traffic is routed.

Modify

Click the

Edit

icon to go to the screen where you can set up a static route

on the ZyXEL Device.

Click the

Delete

icon to remove a static route from the ZyXEL Device.

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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 35

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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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 ptm0.100 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

ptm0.100

ppp1.123

DNS:10.10.23.7

DNS:168.92.5.1

sip.service.com

mail.example.com

(Default)

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