UMN:CLI
User Manual
V8102
690
routing information to outside.
To release the configuration, use the following command.
Command
Mode
Description
no
area
{
A.B.C.D
|
<0-
4294967295>}
range
X:X::X:X/M
Router
Releases the configuration to use summarized infor-
mation for assigned path
12.3.6.4
Stub Area
Stub Area is that ABR is connected to Backbone Area. If it is assigned as Stub Area, ABR
will notify the default path to Stub Area and other routing protocol information will not
transmit to Stub Area.
To create Stub Area, use the following command.
Command
Mode
Description
area
{
A.B.C.D
| <0-4294967295>}
stub
[
no-summary
]
Router
Creates a Stub Area.
If
no-summary
option adds to Stub Area, other Area OSPFv3 routing information also
can not come to Stub Area, However, it only goes to default route from ABR router. That is
Totally Stubby Area.
To delete a created Stub Area, use the following command.
Command
Mode
Description
no
area
{
A.B.C.D
|
<0-
4294967295>}
stub
[
no-
summary
]
Router
Deletes a created Stub Area.
12.3.6.5
Virtual Link
In OSPFv3, all areas must be connected to a backbone area. If there is a break in back-
bone continuity, or the backbone is purposefully portioned, you can establish a virtual link.
The virtual link must be configured in both routers.
OSPFv3 network regards virtual link routers as Point-to-point router. Therefore, the Hello-
interval, Retransmit-interval, Transmit-delay must be consistent across all routers in an at-
tached network.
User can configure time period for Hello-interval, Retransmit-interval, Transmit-delay and
Dead-interval to operate virtual link.
The following items describe 4 configurations for virtual link:
•
Hello-interval
OSPFv3 router sends Hello packet to notify existence of itself. Hello-interval is that
packet transmission interval.
•
Retransmit-interval
When router transmits LSA, it is waiting for approval information come from receiver.
In this time, if there is no answer from receiver for configured time, the router trans-