3Com 3031 Command Reference Manual page 561

View
OSPF area view
Parameter
ip-address: Network segment address.
mask: Network mask.
Advertise: Advertises only the summarized route.
Notadvertise: Suppresses the advertisement of the routes in the matched
range.
Description
Using the abr-summary command, you can configure the route aggregation on
the area border router (ABR). Using the undo abr-summary command, you can
cancel the function of route aggregation on the area border router.
By default, the area border router doesn't aggregate routes.
This command is applicable only to the ABR and is used for the route aggregation
in an area. The ABR only transmits an aggregated route to other areas. Route
aggregation refers to that the routing information is processed in the ABR and for
each network segment configured with route aggregation, there is only one route
transmitted to other areas. An area can configure multiple aggregation network
segments. Thus OSPF can aggregate various network segments together.
Example
Aggregate the routes in the two network segments, 36.42.10.0 and 36.42.110.0,
of OSPF area 1 into one route 36.42.0.0 and transmit it to other areas.
[3Com-ospf-1] area 1
[3Com-ospf-1-area-0.0.0.1] network 36.42.10.0 0.0.0.255
[3Com-ospf-1-area-0.0.0.1] network 36.42.110.0 0.0.0.255
[3Com-ospf-1-area-0.0.0.1] abr-summary 36.42.0.0 255.255.0.0
area Syntax
area area-id
undo area area-id
View
OSPF view, OSPF area view
Parameter
area-id: ID of the OSPF area, which can be a decimal integer (ranging from 0 to
4294967295) or in IP address format.
Description
Using the area command, you can enter OSPF area view. Using the undo area
command, you can cancel the designated area.
Example
Enter area 0 view.
[3Com-ospf-1] area 0
OSPF Configuration Commands 561