H3C Technologies H3C S12500-X Series Switches - Manual (Page 220)

206
Step Command Remarks
4. Configure BGP route
distribution filtering policies.
• Reference an ACL or IPv6 prefix
list to filter advertised BGP
routes:
filter-policy { acl6-number |
prefix-list ipv6-prefix-name }
export [ direct | isisv6
process-id | ospfv3 process-id
| ripng process-id | static ]
• Reference a routing policy to
filter BGP routes advertised to a
peer or peer group:
peer { group-name |
ipv6-address } route-policy
route-policy-name export
• Reference an ACL to filter BGP
routes advertised to a peer or
peer group:
peer { group-name |
ipv6-address } filter-policy
acl6-number export
• Reference an AS path list to
filter BGP routes advertised to a
peer or peer group:
peer { group-name |
ipv6-address } as-path-acl
as-path-acl-number export
• Reference an IPv6 prefix list to
filter BGP routes advertised to a
peer or peer group
peer { group-name |
ipv6-address } prefix-list
ipv6-prefix-name export
Use at least one method.
Not configured by default.
585B
Configuring BGP route reception filtering policies
You can use the following methods to configure BGP route reception filtering policies:
• Use an ACL or prefix list to filter routing information received from all peers.
• Use a routing policy, ACL, AS path list, or prefix list to filter routing information received from a peer
or peer group.
If you configure multiple filtering policies, apply them in the following sequence:
1. filter-policy import
2. peer filter-policy import
3. peer as-path-acl import
4. peer prefix-list import
5. peer route-policy import
Only routes passing all the configured policies can be received.
To configure BGP route reception filtering policies (IPv4):