HP 4800G Series Configuration Manual page 583

To do...
Configure the filtering of
redistributed routes
Reference a routing policy to
filter advertisements to a
peer/peer group
Reference an ACL to filer
advertisements to a peer/peer
group
Reference an AS path ACL to
filter routing information sent to
a peer/peer group
Reference an IP prefix list to
filer routing information sent to
a peer/peer group
Configure BGP route reception filtering policies
Only routes permitted by the configured filtering policies can be installed into the local BGP routing table.
Members of a peer group can have different route reception filtering policies from the peer group.
Follow these steps to configure BGP route reception filtering policies:
To do...
Enter system view
Enter BGP view
Filter incoming routes with an
ACL or IP prefix list
Reference a routing policy to
filter routes from a peer/peer
group
Reference an ACL to filter
routing information from a
peer/peer group
Reference an AS path ACL to
filter routing information from a
peer/peer group
Reference an IP prefix list to
filter routing information from a
peer/peer group
Use the command...
filter-policy { acl-number |
ip-prefix ip-prefix-name }
export [ direct | isis process-id
| ospf process-id | rip
process-id | | static ]
peer { group-name |
ip-address } route-policy
route-policy-name export
peer { group-name |
ip-address } filter-policy
acl-number export
peer { group-name |
ip-address } as-path-acl
as-path-acl-number export
peer { group-name |
ip-address } ip-prefix
ip-prefix-name export
Use the command...
system-view
bgp as-number
filter-policy { acl-number |
ip-prefix ip-prefix-name }
import
peer { group-name |
ip-address } route-policy
route-policy-name import
peer { group-name |
ip-address } filter-policy
acl-number import
peer { group-name |
ip-address } as-path-acl
as-path-acl-number import
peer { group-name |
ip-address } ip-prefix
ip-prefix-name import
1-23
Remarks
Required to choose any;
Not configured by default.
You can configure a filtering
policy as needed;
If several filtering policies are
configured, they are applied in
the following sequence:
filter-policy export
peer filter-policy export
peer as-path-acl export
peer ip-prefix export
peer route-policy export
Only routes pass the first
policy, can they go to the next,
and only routes passing all the
configured policies, can they be
advertised.
Remarks
—
—
Required to choose any;
No route reception filtering is
configured by default;
You can configure a filtering
policy as needed;
If several filtering policies are
configured, they are applied in
the following sequence:
filter-policy import
peer filter-policy import
peer as-path-acl import
peer ip-prefix import
peer route-policy import
Only routes passing the first
policy, can they go to the next,
and only routes passing all the
configured policies, can they be
received.