R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

216
Step Command Remarks
3. Configure BGP route
distribution filtering policies.
• Configure the filtering of
redistributed routes advertised to all
peers:
filter-policy { acl-number | ip-prefix
ip-prefix-name } export [ direct | isis
process-id | ospf process-id | rip
process-id | | static ]
• Reference a routing policy to filter
advertisements to a peer or peer
group:
peer { group-name | ip-address }
route-policy route-policy-name
export
• Reference an ACL to filter
advertisements to a peer or peer
group:
peer { group-name | ip-address }
filter-policy acl-number export
• Reference an AS path ACL to filter
routing information sent to a peer or
peer group:
peer { group-name | ip-address }
as-path-acl as-path-acl-number
export
• Reference an IP prefix list to filter
routing information sent to a peer or
peer group:
peer { group-name | ip-address }
ip-prefix ip-prefix-name export
Use at least one method.
Not configured by default.
Configuring BGP route reception filtering policies
You can use the following methods to configure BGP route reception filtering policies:
• Use ACL or IP prefix list to filter routing information received by all peers.
• Use routing policy, ACL, AS-path ACL, or IP prefix list to filter routing information received by the
specified peer or peer group.
If several filtering policies are configured, they are applied in the following sequence:
1. filter-policy import
2. peer filter-policy import
3. peer as-path-acl import
4. peer ip-prefix import
5. peer route-policy import
Only routes passing all the configured policies can be received.
To configure BGP route reception filtering policies: