User's Manual

Configuring Networking
Configuring IPv6
Cisco RV 120W Administration Guide 58
2
•
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 M
Managed
to use the administered/stateful protocol for
address auto configuration. Check O
Other
to use the administered/stateful protocol
of other, non-address information auto configuration.
STEP 6 Under router preference, choose l
low
, m
medium
, or h
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
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 S
Save
.
To configure the RADVD available prefixes:
STEP 1 Choose N
Networking
> I
IPv6
> A
Advertisement Prefixes
.
STEP 2 Click A
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/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.