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Page 61 / 199 Scroll up to view Page 56 - 60
IPv6 Transition
Cisco Small Business RV0xx Series Routers Administration Guide
61
3
IPv6 Transition
When Dual-Stack IP is enabled on the
Network > Setup
page, a 6to4 tunnel is
enabled by default for IPv6 packets via 6to4 source/destination addressing
exchange. This feature allows the router to establish auto-tunnel in IPv4 network
(or a real IPv4 Internet connection) across two independent IPv6 networks. Use
the
Setup > IPv6 Transition
page to disable or enable this feature.
To open this page:
Click
Setup > IPv6 Transition
in the navigation tree.
Check the box to enable the 6to4 tunnel, or uncheck the box to disable it.
NOTE
Before navigating away from this page, click
Save
to save your settings, or click
Cancel
to undo them. Any unsaved changes are abandoned.
Next steps:
For a typical deployment, such as setting up a 6to4 tunnel between
your RV0xx Series router and a Cisco RV Series router at another site, you also
should complete the tasks listed below.
•
On the
DHCP->Router Advertisement
page, enable managed RA flags to
support auto-configuration of connected devices. Verify that your IPv6
devices acquire 6to4 prefixes. The prefixes will be in the following format:
2002:
<your WAN IP in hexadecimal format>
::)
•
Temporarily disable the router firewall for testing of your 6to4 tunnel. On the
Firewall > General
page, choose
Disable
. To test the tunnel, attempt to ping
an IPv6 address at the remote location.
•
After verifying the tunnel as described above, enable the firewall and add
access rules on the
Firewall > Access Rules
page. For example, add a rule
to allow all traffic through the WAN interface where the source is a single IP
Page 62 / 199
IPv6 Transition
Cisco Small Business RV0xx Series Routers Administration Guide
62
3
address or a range of addresses on the local network and the destination is
a single IP address or a range of addresses on the remote network.
•
Complete the required tasks on the router at the other end of the 6to4
tunnel.
NOTE
For detailed application notes, see the documentation links in
Appendix H, “Where
to Go From Here.”
Page 63 / 199
4
Cisco Small Business RV0xx Series Routers Administration Guide
63
DHCP
Use the
DHCP
module to configure the settings for the DHCP server or DHCP
relay agent, and to view DHCP summary information.
If Dual-Stack IP is enabled on the
Network > Setup
page, you can configure IPv4
and IPv6 settings.
Refer to these topics:
•
Setting Up the DHCP Server or DHCP Relay, page 63
•
Viewing the DHCP Status Information, page 70
•
Router Advertisement (IPv6), page 71
Setting Up the DHCP Server or DHCP Relay
Use the
DHCP > DHCP Setup
page to configure this router as a DHCP (Dynamic
Host Configuration Protocol) server or as a DHCP relay agent.
A DHCP server automatically assigns available IP addresses to computers on your
network. An address is “leased” to a client for a specified time, and then it expires
and can be assigned to a different device. If a device needs to have an unchanging
IP addresses, you can add the device to the Static IP list. Optionally, you can use
the Static IP list to block access by devices that are not on the list or do not have
the correct IP address.
If you have another DHCP server on your network, or if you want to assign IP
addresses manually, you can disable the DHCP feature and enable DHCP Relay.
For more information, see
Enabling DHCP Server and DHCP Relay, page 64
.
NOTE
DHCP Relay is available only on the IPv4 tab. DHCPv6 Relay is not available.
Page 64 / 199
DHCP
Setting Up the DHCP Server or DHCP Relay
Cisco Small Business RV0xx Series Routers Administration Guide
64
4
To open this page:
Click
DHCP > DHCP Setup
in the navigation tree.
NOTE
Before navigating away from this page, click
Save
to save your settings, or click
Cancel
to undo them. Any unsaved changes are abandoned.
Enabling DHCP Server and DHCP Relay
Click the
IPv4
tab or the
IPv6
tab.
Note: The IPv6 tab is available only if you enabled Dual-Stack IP on the
Network >
Setup
page.
Enter the following settings:
•
Enable DHCP server:
Check the box to allow the router to dynamically
assign IP addresses to up to 50 connected devices. Uncheck the box if you
have another DHCP server on the network or you want to configure static IP
addresses for your network devices. If you enable this feature, enter the
settings in the
Dynamic IP
section of the page, as described below. Other
sections of this page are optional.
•
DHCP Relay (IPv4 only):
If you have another DHCP server, enable DHCP
Relay to allow this router to communicate the clients’ DHCP requests to the
DHCP server. The DHCP Relay mechanism allows the DHCP clients and the
DHCP server to be located on different networks. The DHCP clients will
send DHCP discover broadcast packets to get IP addresses from the DHCP
server. This router will act as DHCP Relay agent and send DHCP unicasts to
DHCP server.
Required:
Enter the
DHCP Server IP Address
. Other sections of this page
are optional.
Page 65 / 199
DHCP
Setting Up the DHCP Server or DHCP Relay
Cisco Small Business RV0xx Series Routers Administration Guide
65
4
NOTE
IPv4 only:
If you disable both DHCP server and DHCP Relay, configure each device
on your network with a static IP address, subnet mask, and DNS settings. Do not
assign the same IP address to different computers.
Dynamic IP (used for DHCP Server only)
•
Client Lease Time:
The Client Lease Time is the amount of time that a
network user is allowed to connect to the router with the current dynamic IP
address. Enter the amount of time in minutes. Valid values are 5~43,200
minutes. The default is 1440 minutes, which is 24 hours.
NOTE:
To receive an IP address from the DHCP server, a client device must
be configured to obtain an IP address automatically from a DHCP server. By
default, Windows computers are set to obtain an IP automatically.
•
Range Start
and
Range End:
Enter a starting IP address and an ending IP
address to create a range of IP addresses that can be assigned
dynamically. The range can include up to 50 IP addresses, which is the
maximum that the server can assign. Valid values are 100~149. Do not
include the router’s LAN IP address in this dynamic IP range. For example, if
the router uses the default LAN IP address,
192.168.1.1
, then the starting
value must be 192.168.1.2 or greater.
DNS (used for DHCP Server only)
Optionally, enter the IP address of a
DNS Server
. You also can enter a secondary
DNS server. Specifying a DNS server can provide quicker access than using a
DNS server that is dynamically assigned through the WAN settings. You can keep
the default setting of 0.0.0.0 to use a dynamically assigned DNS server.
WINS (used for DHCP Server, IPv4 Only)
Optionally, enter the IP address of a
WINS Server
.
Windows Internet Naming
Service resolves NetBIOS names to IP addresses. If you do not know the IP
address of the WINS server, keep the default, 0.0.0.0.
NOTE
To support NetBIOS for DHCP clients, the router uses two methods:
•
When the DHCP clients receive dynamic IP addresses from the router, it
automatically includes the information of the WINS server to support
NetBIOS.
•
If a client has a static IP address, then the IP address, subnet mask, default
gateway address, and DNS server settings must be configured on the
Internet Protocol (TCP/IP) page of the Windows operating system. Then the
WINS IP address must be configured on the advanced TCP/IP page. (For
more information, refer to Windows Help.)

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