filter import (OSPFv3)

Function

The filter import command filters the incoming Type3 LSAs of the local area.

The undo filter import command restores the default setting.

By default, the incoming Type3 LSAs are not filtered.

Product	Support
S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S	Supported
S2720-EI, S5720I-SI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730S-EI, S5730-SI, S6720-LI, S6720S-LI, S6720S-SI, and S6720-SI	Not supported

Format

filter { acl6-number | acl6-name acl6-name | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name } import

undo filter [ acl6-number | acl6-name acl6-name | ipv6-prefix ipv6-prefix-name | route-policy route-policy-name ] import

Parameters

Parameter	Description	Value
acl6-number	Specifies the number of a basic ACL.	The value is an integer that ranges from 2000 to 2999.
acl6-name acl6-name	Specifies the name of a named ACL.	The value is a string of 1 to 64 case-sensitive characters without spaces. The value must start with a letter.
ipv6-prefix ipv6-prefix-name	Specifies the name of an IP prefix list.	The name is a string of 1 to 169 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
route-policy route-policy-name	Specifies the name of a routing policy.	The name is a string of 1 to 40 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.

Views

OSPFv3 area view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The filter import command can be used to filter out invalid LSAs sent to neighbors to reduce the size of the neighbors' LSDBs and speed up network convergence.

Configuration Impact

After filtering conditions are set for the incoming Type3 LSAs to be advertised using the filter import command, only the incoming Type3 LSAs that pass the filtering can be received and advertised.

Precautions

The command can be configured only on ABRs.
When the rule command is used to configure a filtering rule for an ACL, only the source address range specified by the parameter source and the time range specified by the parameter time-range in the rule command take effect.
To set filtering conditions for the outgoing Type3 LSAs to be advertised, run the filter export (OSPFv3) command.
Creating an ACL6, IPv6 prefix list, or route-policy before it is referenced is recommended. If a nonexistent ACL6, IPv6 prefix list, or route-policy is referenced using the command, OSPFv3 receives all Type 3 LSAs.

Example

# Configure OSPFv3 to filter the incoming Type3 LSAs within the local area.

<HUAWEI> system-view

[HUAWEI] ospfv3 100

[HUAWEI-ospfv3-100] area 1

[HUAWEI-ospfv3-100-area-0.0.0.1] filter ipv6-prefix my-prefix-list import