H3C Technologies H3C S7500E Series Switches - Manual (Page 227)

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z IP prefix list
z Route policy
z AS-path ACL
For how to configure an ACL, see ACL Configuration in the ACL and QoS Configuration Guide.
For how to configure an IP prefix list, route policy and AS-path ACL, see Route Policy Configuration in
the Layer 3 - IP Routing Configuration Guide.
Configure BGP route distribution filtering policies
Follow these steps to configure BGP route distribution filtering policies:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Configure the filtering of
redistributed routes
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/peer
group
peer { group-name | ip-address }
route-policy route-policy-name
export
Reference an ACL to filer
advertisements to a peer/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/peer group
peer { group-name | ip-address }
as-path-acl as-path-acl-number
export
Reference an IP prefix list to filer
routing information sent to a
peer/peer group
peer { group-name | ip-address }
ip-prefix ip-prefix-name export
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:
z filter-policy export
z peer filter-policy export
z peer as-path-acl export
z peer ip-prefix export
z 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.
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… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —