Configuring Networking

Configuring IPv6

Cisco RV120W Administration Guide

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2

•

6 to 4 Tunnel—Uses the tunnel interface to route traffic from an IPv6 network

to other IPv6 networks over an IPv4 network.

STEP

8

Enter the IP Address of the gateway through which the destination host or network

can be reached.

STEP

9

In the metric field, specify the priority of the route by choosing a value between 2

and 15. If multiple routes to the same destination exist, the route with the lowest

metric is used.

STEP 10

Click Save.

Configuring Tunneling

The Cisco RV120W provides several IPv6 tunneling methods. 6to4 tunneling

allows IPv6 packets to be transmitted over an IPv4 network. 6to4 tunneling is

typically used when a site or end user wants to connect to the IPv6 Internet using

the existing IPv4 network.

NOTE

You must use static routes when tunneling. See

Configuring Static Routing,

page 46

.

To configure 6to4 Tunneling:

STEP 1

Select Networking > IPv6 > Tunneling.

STEP

2

Check the Automatic Tunneling box.

STEP

3

Click Save.

Viewing IPv6 Tunnel Information

To view IPv6 tunnel information, choose Networking > IPv6 > Tunneling. Click

Refresh

to get the latest information.

The IPv6 Tunnel Status table shows the name of tunnel and the IPv6 address that

is created on the device.

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Configuring IPv6

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2

Configuring Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)

Tunnels

Intra-site automatic tunnel addressing protocol (ISATAP) is a method to transmit

IPv6 packets between dual-stack nodes over an IPv4 network. The Cisco

RV120W is one endpoint (a node) for the tunnel. You must also set a local endpoint,

as well as the ISATAP Subnet Prefix that defines the logical ISATAP subnet to

configure a tunnel.

To add an ISATAP tunnel:

STEP 1

Choose Networking > IPv6 > Tunneling.

STEP

2

In the ISATAP Tunnel Table, click Add.

STEP

3

Enter the tunnel name.

STEP

4

Choose the local endpoint address, or the endpoint address for the tunnel that

starts with the Cisco RV120W. The endpoint can be the LAN interface (if the LAN

is configured as an IPv4 network), or another LAN IPv4 address.

STEP

5

If you chose Other IP in Step 4, enter the IPv4 address of the endpoint.

STEP

6

Enter the ISATAP subnet prefix. This is the 64-bit subnet prefix that is assigned to

the logical ISATAP subnet for this intranet. This can be obtained from your ISP or

internet registry, or derived from RFC 4193.

STEP

7

Click Save.

To modify the settings of an ISATAP tunnel:

STEP 1

Choose Networking > IPv6 > Tunneling.

STEP

2

Check the check boxes for the tunnels you want to modify.

STEP

3

Click Edit, make the changes, and click

Save

.

Configuring Networking

Configuring IPv6

Cisco RV120W Administration Guide

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2

To delete an ISATAP tunnel:

STEP 1

Choose Networking > IPv6 > Tunneling.

STEP

2

Check the check boxes for the tunnels you want to delete.

STEP

3

Click Delete.

Configuring Router Advertisement

The Router Advertisement Daemon (RADVD) on the Cisco RV120W listens for

router solicitations in the IPv6 LAN and responds with router advertisements as

required. This is stateless IPv6 auto configuration, and the Cisco RV120W

distributes IPv6 prefixes to all nodes on the network.

To configure the RADVD:

STEP 1

Choose Networking > IPv6 > Router Advertisement.

STEP

2

Under Router Advertisement Status, choose Enable.

STEP

3

Under Advertise Mode, choose one of the following:

•

Unsolicited Multicast—Select this option to send router advertisements

(RAs) to all interfaces belonging to the multicast group.

•

Unicast only—Select this option to restrict advertisements to well-known

IPv6 addresses only (router advertisements [RAs] are sent to the interface

belonging to the known address only).

STEP

4

If you chose Unsolicited Multicast in Step 3, enter the advertise interval. The

advertise interval is a random value between the Minimum Router Advertisement

Interval and Maximum Router Advertisement Interval. (MinRtrAdvInterval = 0.33 *

MaxRtrAdvInterval.) The default is 30 seconds.

STEP

5

Under RA Flags, check Managed to use the administered/stateful protocol for

address auto configuration. Check Other to use the administered/stateful protocol

of other, non-address information auto configuration.

STEP

6

Under router preference, choose Low, Medium, or High. The router preference

provides a preference metric for default routers. The low, medium and high values

are signaled in unused bits in Router Advertisement messages. This extension is

backward compatible, both for routers (setting the router preference value) and

hosts (interpreting the router preference value). These values are ignored by hosts

Configuring Networking

Configuring IPv6

Cisco RV120W Administration Guide

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2

that do not implement router preference. This feature is useful if there are other

RADVD-enabled devices on the LAN. The default is high.

STEP

7

Enter the MTU size. The MTU is the size of the largest packet that can be sent over

the network. The MTU is used in RAs to ensure all nodes on the network use the

same MTU value when the LAN MTU is not well-known. The default is 1500 bytes.

STEP

8

Enter the router lifetime value, or the time in seconds that the advertisement

messages will exist on the route. The default is 3600 seconds.

STEP

9

Click Save.

Configuring Router Advertisement Prefixes

To configure the RADVD available prefixes:

STEP 1

Choose Networking > IPv6 > Advertisement Prefixes.

STEP

2

Click Add.

STEP

3

Choose the IPv6 Prefix Type:

•

6to4—6to4 is a system that allows IPv6 packets to be transmitted over an

IPv4 network. It is used when an end user wants to connect to the IPv6

Internet using their existing IPv4 connection

•

Global/Local/ISATAP—By using ISATAP, you can integrate IPv6 traffic into a

IPv4 network environment. ISATAP uses a locally assigned IPv4 address to

create a 64-bit interface identifier for IPv6.

STEP

4

If you chose 6to4 in Step 3, enter the Site-level aggregation identifier (SLA ID.) The

SLA ID in the 6to4 address prefix is set to the interface ID of the interface on which

the advertisements are sent.

If you chose Global/Local/ISATAP in Step 3, enter the IPv6 prefix and prefix length.

The IPv6 prefix specifies the IPv6 network address. The prefix length variable is a

decimal value that indicates the number of contiguous, higher-order bits of the

address that make up the network portion of the address.

STEP

5

Enter the prefix lifetime, or the length of time over which the requesting router is

allowed to use the prefix.

STEP

6

Click Save.

3

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51

Configuring the Wireless Network

This chapter describes how to configure your wireless network and includes the

following sections:

•

A Note About Wireless Security, page 51

•

Understanding the Cisco RV120W’s Wireless Networks, page 54

•

Configuring Basic Wireless Settings, page 54

•

Configuring Advanced Wireless Settings, page 61

•

Configuring Wi-Fi Protected Setup, page 62

•

Configuring a Wireless Distribution System (WDS), page 63

A Note About Wireless Security

Wireless networks are convenient and easy to install, so small businesses with

high-speed Internet access are adopting them at a rapid pace. Because wireless

networking operates by sending information over radio waves, it can be more

vulnerable to intruders than a traditional wired network. Like signals from your

cellular or cordless phones, signals from your wireless network can also be

intercepted. The following information will help you to improve your security:

•

Wireless Security Tips, page 52

•

General Network Security Guidelines, page 53