Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring Advanced Routing Information (Rev. 03)
Open Shortest Path First (OSPF)
© 2008 Foundry Networks, Inc
Page 25 of 68
Command Syntax
device-name
(config-router)#
area
{<
area-id
> |
A.B.C.D
}
stub
[
no-summary
]
device-name
(config-router)#
no area
{<
area-id
> |
A.B.C.D
}
stub
[
no-summary
]
Argument Description
area-id
OSPF area ID as a decimal value in the range <0-4294967295>.
A.B.C.D
OSPF area ID in IP address format.
no-summary
(Optional) Do not inject inter-area routes into stub.
Configuring Route Summarization between OSPF Areas
The
area range
command, in Router OSPF Configuration mode, defines an address range within
the specified area for which a single route will be advertised. The
no
form of this command
removes the definition.
Route summarization is the consolidation of advertised addresses. This feature causes a single
summary route to be advertised to other areas by an area border router. In OSPF, an area border
router advertises networks in one area into another area. If the network numbers in an area are
assigned in a contiguous range, the user can configure the area border router to advertise a
summary route that covers all the individual networks within the area that fall into the specified
range.
Command Syntax
device-name
(config-router)#
area
{<
area-id
> |
A.B.C.D
}
range A.B.C.D/M
[
advertise
|
not-advertise
|
substitute
A.B.C.D/M
|
suppress
]
device-name
(config-router)#
no area
{<
area-id
> |
A.B.C.D
}
range A.B.C.D/M
[
advertise
|
not-advertise
|
substitute
A.B.C.D/M
|
suppress
]
Argument Description
area-id
OSPF area ID as a decimal value in the range <0-4294967295>.
A.B.C.D
OSPF area ID in IP address format.
A.B.C.D/M
Area range prefix.
advertise
(Optional). Advertise this range (the default).
not-advertise
(Optional). Do not advertise this range.
substitute
A.B.C.D/M
(Optional). Announces the area range as another prefix.
suppress
(Optional). Do not advertise this range.
Example
The following example specifies one summary route to be advertised by the ABR to other areas for
all subnets on network 36.0.0.0 and for all hosts on network 192.42.110.0:
device-name
(config)#
router ospf
device-name
(config-router)#
network 36.0.0.0/8 area 36.0.0.0
device-name
(config-router)#
network 192.42.110.0/24 area 0
device-name
(config-router)#
area 36.0.0.0 range 36.0.0.0/8