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Configuring Networking
Configuring IPv6
Cisco RV120W Administration Guide
47
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.
Page 57 / 163
Configuring Networking
Configuring IPv6
Cisco RV120W Administration Guide
48
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
.
Page 58 / 163
Configuring Networking
Configuring IPv6
Cisco RV120W Administration Guide
49
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
Page 59 / 163
Configuring Networking
Configuring IPv6
Cisco RV120W Administration Guide
50
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.
Page 60 / 163
3
Cisco RV120W Administration Guide
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

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