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filter-policy import (BGP/BGP-VPN instance view)
Syntax
filter-policy
{
acl-number
|
ip-prefix ip-prefix-name
}
import
undo filter-policy
import
View
BGP view, BGP-VPN instance view
Default Level
2: System level
Parameters
acl-number
: Number of an ACL used to filter incoming routing information, ranging from 2000 to 3999.
ip-prefix-name
: Name of an IP prefix list used to filter incoming routing information, a string of 1 to 19
characters.
Description
Use the
filter-policy import
command to configure the filtering of incoming routing information.
Use the
undo filter-policy import
command to disable the filtering.
By default, incoming routing information is not filtered.
Note that if you want to reference an advanced ACL (with a number from 3000 to 3999) in the
command, the ACL should be configured with the
rule
[
rule-id
] {
deny
|
permit
}
ip source
sour-addr
sour-wildcard
command to deny/permit a route with the specified destination, or with the
rule
[
rule-id
]
{
deny
|
permit
}
ip source
sour-addr sour-wildcard
destination
dest-addr dest-wildcard
command to
deny/permit a route with the specified destination and mask. The
source
keyword specifies the
destination address of a route while the
destination
keyword specifies the subnet mask of the route
(the subnet mask must be valid; otherwise, the configuration is ineffective).
Examples
# In BGP view, reference ACL 2000 to filter incoming routing information.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] filter-policy 2000 import
# In BGP-VPN instance view, reference ACL 2000 to filter incoming routing information (the VPN has
been created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1] filter-policy 2000 import
# Configure ACL 3000 to permit only route 113.0.0.0/16 to pass, and reference ACL 3000 to filter
incoming route information.
<Sysname> system-view
[Sysname] acl number 3000
[Sysname-acl-adv-3000] rule 10 permit ip source 113.0.0.0 0 destination 255.255.0.0 0
[Sysname-acl-adv-3000] rule 100 deny ip
[Sysname-acl-adv-3000] quit
[Sysname] bgp 100