Configuring Bgp Route Reception Filtering Policies - H3C S5500-EI series Operation Manual

Operation Manual – IPv4 Routing
H3C S5500-EI Series Ethernet Switches
Enter system view
Enter BGP view
Configure the filtering of
outgoing redistributed
routes
Reference a routing policy
to filter routes to a
peer/peer group
Reference an ACL to filer
routes to a peer/peer
group
Reference an AS path
ACL to filter routing
information to a peer/peer
group
Reference an IP prefix list
to filer routing information
to a peer/peer group

5.4.6 Configuring BGP Route Reception Filtering Policies

Follow these steps to configure BGP route reception filtering policies:
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
To do...
system-view
bgp as-number
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
To do...
system-view
bgp as-number
filter-policy { acl-number
| ip-prefix
ip-prefix-name } import
peer { group-name |
ip-address } route-policy
policy-name import
peer { group-name |
ip-address } filter-policy
acl-number import
Use the command...
Use the command...
5-25
Chapter 5 BGP Configuration
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