Dell N1100-ON, Справочное руководство

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Layer 3 Routing Commands
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If the user tries to configure both types of ranges for the same prefix and area:
A T3 range with the same prefix is already configured on this area.
If the network mask is invalid:
console (config-router)#area 1 range 0.0.0.0 0.0.0.0 summarylink
An area range mask must have contiguous ones and be no longer than 31 bits.
If the prefix is not a valid area range prefix:
console (config-router)#area 1 range 0.0.0.0 255.0.0.0 summarylink
Cannot create this area range because it represents a default route.
console (config-router)#area 1 range 225.0.0.0 255.0.0.0 summarylink
225.0.0.0 255.0.0.0 is an invalid prefix for an area range.
If the maximum number of ranges is already configured:
console (config-router)#area 3 range 90.0.0.0 255.0.0.0 summarylink cost 50
The maximum number of area ranges (60) is already configured.
If the user tries to delete an area range that does not exist:
console (config-router)#no area 4 range 40.0.0.0 255.0.0.0 summarylink
Delete failed. No matching area range configured.
Example
The following example defines an area range for the area 20.
console(config-router)#area 20 range 192.168.6.0 255.255.255.0 summarylink
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area stub
Use the area stub command in Router OSPF Configuration mode to create a
stub area for the specified area ID. A stub area is characterized by the fact
that AS External LSAs are not propagated into the area. Removing AS