Area Filter-List; Area Nssa - Zte ZXR10 8900 Series Command Reference Manual

Purpose
Command Modes
Syntax
Syntax
Description
Defaults
Instructions
Example
Purpose
Command Modes

area filter-list

Use this command to filter the information of network routing be-
tween OSPF areas. Cancel the setting with the no form of this
command.
Router configuration
area <area-id> filter-list prefix <prefix-list>{out | in}
no area <area-id> filter-list prefix <prefix-list>{out | in}]
<area-id>
prefix <prefix-list>
{out | in}
There is no filter of the network routing information between OSPF
areas.
� This command is supported after the 4.6.02 platform version.
�
If the area does not exist, it will be created automatically.
� The parameter in indicates that it is forbidden for the corre-
sponding LSA of type 3 to enter this area, so there will be no
route. The parameter out indicates that it is forbidden for the
LSA of type 3 the corresponding route generate to enter other
area.
� This command is only used to filter the route corresponding to
the LSA of type 3 by the ABR.
� Only if the condition of the prefix-list parameter is matched can
this command be permit (or deny), otherwise it will be deny
all (or permit all). That is, if there is no template or if the
template exists and the condition of the prefix-list parameter
is not matched, the command will be deny all (or permit all).
In this example, it is forbidden to export that the network
20.20.20.0 of area 0.0.0.1 to other areas.
ZXR10(config)#router ospf 1
ZXR10(config-router)#network 20.20.20.0 0.0.0.255 area 1
ZXR10(config-router)#exit
ZXR10(config)#ip prefix-list zxr10 deny 20.20.20.0 24
ZXR10(config)#router ospf 1
ZXR10(config-router)#area 0.0.0.1 filter-list prefix zxr10 out

area nssa

Use this command to define an area as the NSSA area. Change
the area from NSSA non-NSSA with the no form of this command.
Router configuration
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Area identifier, a decimal number
(0~4294967295) or a dotted decimal IP
address
Name of the prefix list
Filter the routing information when it is
exported from the area or imported to the
area
Chapter 3 OSPF Protocol
33