User's Manual

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Run the following command in router configuration mode to set the domain’s parameters:
Command Purpose
area
area-id
stub
[no-summary] Defines a stub area.
area
area-id
default-cost
cost Sets the weight of the default route of the stub
area.
As to those areas that are not backbone areas and do not connect the backbone areas directly or as to those
discontinuous areas, the OSPFv3 virtual link can be used to establish a logic connectivity. In order to create
a virtual link, you have to perform configuration at the two terminals of the virtual link. If only one terminal is
configured, the virtual link cannot work.
Run the following command in router configuration mode to set the domain’s parameters:
Command Purpose
area
area-id
virtual-link
neighbor-ID [
dead-
interval
dead-value][
hello-interval
hello-
value][
retransmit-interval
retrans-
value][
transmit-delay
dly-value]
Establishes the virtual link.
80.3.6 Setting the Route Summary in the OSPFv3 Domain
With this function ABR can broadcast a summary route to other areas. In OSPFv3 ABR will broadcast each
network to other areas. If network IDs are distributed to be continuous, you can set ABR to broadcast a
summary route to other areas. The summary route can cover all networks in a certain range.
Run the following command in router configuration mode to set the address' range:
Command Purpose
area
area-id
range
ipv6-prefix /prefix-length Sets the address' range of the summary route.
80.3.7 Setting the Summary of the Forwarded Routes
When routes are distributed from other routing areas to the OSPFv3 routing area, each route is singularly
broadcasted as an external LSA. However, you can set a route on a router to make this route cover an address
range. In this way, the size of the OSPFv3 link-state database can be reduced.
Run the following command in router configuration mode to set a summary route:
Command Purpose
summary-prefix ipv6-prefix /prefix-length
Broadcasts only one summary route.
80.3.8 Generating a Default Route
ASBR should generate a default route to enter the OSPFv3 routing area. Whenever it is, you make
configuration to enable a router to distribute a route to the OSPFv3 routing area and this route becomes ASBR
automatically. However, ASBR does not generate a default route by default to enter the OSPFv3 routing area.
80.3.9 Choosing the Route ID on the Loopback Interface
OSPFv3 uses the maximum IPv4 address as its router ID. If the interface that connects the IPv4 address is