set protocols ospf area filter-list prefix

Run the command set protocols ospf area filter-list prefix to create a filter list which acts as an access list for route advertisement in OSPF. This command filters Type-3 summary-LSAs to or from area using prefix lists. Keywords in or out is used to specify the inbound or outbound direction for the filter list. Optional parameter instance-id can be included to specify the OSPFv2 multi-instance ID in the default VRF. The optional parameter vrf can be used to specify OSFPv2 instance for a particular VRF. If VRF is not defined then OSPFv2 instance takes effect for the default VRF.

Multiple instances of OSPF are only allowed in the default VRF. A maximum of 8 instance can be configured in the default VRF. In non-default VRFs, only single instance OSPF can be configured.

Run the command delete protocols ospf area filter-list prefix to delete this configuration.

Command Syntax.

set protocols ospf [instance-id <instance-id> | vrf <vrf-name>] area {<ipv4>|<area-id>} {in|out} filter-list prefix <prefix-list-v4>

delete protocols ospf [instance-id <instance-id> | vrf <vrf-name>] area {<ipv4>|<area-id>} {in|out} filter-list prefix <prefix-list-v4>

Parameter

Parameter	Description
instance-id <instance-id>	Optional, specifies the OSPF instance ID. The value is an integer that ranges from 1 to 8.
vrf <vrf-name>	Optional. Specifies the name of the VRF for the OSPF instance.
area {<ipv4>\|<area-id>}	Specifies the OSPF area, the value could be in IPv4 dotted decimal format or an integer ranging from 0 to 4294967295.
prefix <prefix-list>	Specifies the filter list name.
in	Specifies the inbound direction.
out	Specifies the outbound direction.

Example

Configure prefix list1 for VRF BLUE, area 1.1.1.1 in the outbound direction.

admin@XorPlus# set protocols ospf vrf BLUE area 1.1.1.1 out prefix-list prefix list1
admin@Xorplus# commit