FRITZ WLAN 7490 Router Manual PDF (Setup & Configuration Guide)

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Network Settings in the FRITZ!Box

FRITZ!Box 7490

141

The IP address and the corresponding subnet mask yield the

following values:

The following IPv4 addresses cannot be assigned because

they are reserved for certain purposes:

IP Address in Case of Emergency

The FRITZ!Box has a fixed IP address that cannot be changed.

The FRITZ!Box always can be reached at this IP address.

For instructions about how to handle fixed IP addresses, see

the section

Opening the User Interface Using an Emergency IP

Address

from

page 163

.

IPv4 Address in the FRITZ!Box

Upon delivery the FRITZ!Box is assigned the following IPv4

address:

192.168.178.1

If you would like to change the IPv4 address, please read

through the following sections.

When Does It Make Sense to Change the IPv4 Address?

You should change the IPv4 address of the FRITZ!Box if the

following apply to your network:

•

You have an existing local IPv4 network, one subnet with

several computers.

Network address of the subnet

192.168.178.0

Entire IPv4 address range for the

computers

192.168.178.2 –

192.168.178.254

This IP address is used by the

FRITZ!Box itself

192.168.178.1

This IP address is the broadcast ad-

dress used to send messages into the

network

192.168.178.255

Fixed IP address

169.254.1.1

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Network Settings in the FRITZ!Box

•

Fixed IPv4 addresses are registered in the network set-

tings of the computer, and you do not want to or are not

permitted to change these addresses.

•

You want to connect the FRITZ!Box to the local IPv4 net-

work in order to make the FRITZ!Box features available to

all of the computers in the IPv4 network.

Reserved IP Addresses

The entire IP network 192.168.180.0 in the FRITZ!Box is re-

served for internal purposes.

IPv4 addresses from this network may not be assigned to the

FRITZ!Box.

DHCP Server for IPv4

The FRITZ!Box is equipped with its own DHCP server for the

IPv4 network. The DHCP server is enabled by default in the

factory settings. The following range of IP addresses is re-

served for the DHCP server in the factory settings:

192.168.178.20 – 192.168.178.200

This IP address can be changed as needed.

Every time the operating system on a computer connected

with FRITZ!Box is started, the DHCP server assigns it an IPv4

address from the IP address range of the DHCP server.

Only one DHCP server may be active within any network.

Assigning the IP addresses via the DHCP server ensures that

all of the computers connected with the FRITZ!Box are located

in the same IP network.

The computers can receive their IPv4 addresses from the DH-

CP server only if the setting “Obtain an IPv4 address automat-

ically” is enabled in the their IP settings. For more informa-

tion, see the chapter

Obtaining an IP Address Automatically

from

page 145

.

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Network Settings in the FRITZ!Box

FRITZ!Box 7490

143

Fixed IPv4 Addresses When the DHCP Server Is Enabled

If you would like to configure fixed IPv4 addresses on individ-

ual computers connected with the FRITZ!Box despite the en-

abled DHCP server, please note the following:

•

The IPv4 addresses must be from the IPv4 network of the

FRITZ!Box.

•

The IPv4 addresses may not come from the address

range of the DHCP server.

•

Each IPv4 address can be assigned only once.

Disabling the DHCP Server

You can disable the DHCP server.

To make sure that all computers remain in the same IP net-

work when the DHCP server is disabled, you must enter the

IPv4 addresses manually in the computers’ network settings.

First disable the option “Obtain an IP address automatically”

and then enter the IP address manually in the appropriate

field.

In the case of the preset IPv4 address of the FRITZ!Box, the

following IPv4 addresses are available for assignment to the

computers:

Here too: each IPv4 address can be assigned only once.

Changing Network Settings

1.

Open the FRITZ!Box user interface, see

page 32

.

2.

Enable the advanced view.

3.

Select the “Home Network / Network” menu.

4.

Select the “Network Settings” page.

5.

Click the “IPv4 Addresses” or “IPv6 Addresses” button,

depending on the address range you would like to

change.

192.168.178.2 – 192.168.178.254

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Network Settings in the FRITZ!Box

Note that changes to the network settings in the FRITZ!Box

may make it necessary to adjust the network settings of your

computers so that you can continue to access the FRITZ!Box

user interface.

IPv6 Settings in the FRITZ!Box

The following settings options for IPv6 are found in the ad-

vanced view in the “Home Network / Network” menu on the

“Network Settings” page.

Additional IPv6 Routers in the Home Network

•

IPv6 prefixes from other IPv6 routers

You can allow the network devices connected to the

FRITZ!Box to receive IPv6 prefixes announced by other

IPv6 routers in the local network.

•

Also announce DNSv6 server via router advertisement

With this setting you specify that the FRITZ!Box announc-

es the local DNSv6 server in the local network via router

advertisement. Alternatively, the network devices can

identify the local DNSv6 server via DHCPv6.

IPv6 Settings

Click the “IPv6 Addresses” button to configure settings for

the IPv6 addresses in the local network.

Unique Local Addresses

Communication within the local network takes place via the

Unique Local Addresses (ULA). If no IPv6 Internet connection

is established, the network devices do not have a ULA and

communication between them is restricted. For this case you

can set the FRITZ!Box such that the network devices receive

the ULA from the FRITZ!Box.

DHCPv6 Servers in the Home Network

The FRITZ!Box is equipped with its own DHCPv6 server. The

DHCPv6 server of the FRITZ!Box is switched on by default.

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Obtaining an IP Address Automatically

FRITZ!Box 7490

145

The DHCPv6 server assigns the network devices their IPv6

settings. These settings are used instead of the data in the

router advertisement messages. The DNS server, IPv6 prefix-

es or IPv6 addresses can all be assigned by DHCPv6. Define

which IPv6 settings should be assigned by the DHCPv6 serv-

er.

UPnP Settings

The Universal Plug-and-Play (UPnP) service included in your

FRITZ!Box provides status information about the FRITZ!Box to

all connected computers. UPnP-compliant programs on these

computers can receive this information and use them to dis-

play the status of the FRITZ!Box (e.g., connection status, data

transmission). UPnP service thus allows you to monitor your

FRITZ!Box from a connected computer.

Here is how to change the UPnP settings:

1.

Open the FRITZ!Box user interface, see

page 32

.

2.

Enable the advanced view.

3.

Configure the UPnP settings in the “Home Network / Net-

work” menu on the “Programs” page.

18.2

Obtaining an IP Address Automatically

The FRITZ!Box has its own DHCP server, which assigns IP ad-

dresses to the connected computers. The connected comput-

ers must be configured such that they can receive their IP

addresses automatically. The steps for checking and adjust-

ing this option differ among the operating systems. See the

relevant section for your operating system.

If FRITZ!Box is operated in a network, no other DHCP server

may be activated in this network.

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