160 CHAPTER 6: IP ROUTING PROTOCOL OPERATION
filter-policy gateway command specifies that only the update packets from a
specific neighboring router will be received.
By default, the filtering of received routes is not performed.
Configuring the Filtering of Distributed Routes
Define a policy concerning route distribution that filters the routing information
that does not satisfy the conditions, and distributes routes with the help of an ACL
or address ip-prefix.
Perform the following configuration in Routing Protocol View.
The route policy supports importing the routes discovered by the following
protocols into the routing table:
■ Direct — The hop (or host) to which the local interface is directly connected.
■ Static — Static Route Configuration
■ RIP — Route discovered by RIP
■ OSPF — Route discovered by OSPF
■ OSPF-ASE — External route discovered by OSPF
■ OSPF-NSSA — NSSA route discovered by OSPF
By default, the filtering of distributed routes is not performed.
Table 168 Configuring the Filtering of Received Routes
Operation Command
Configure to filter the received
routing information distributed by
the specified address
filter-policy gateway
ip_prefix_name
import
Cancel the filtering of the received
routing information distributed by
the specified address
undo filter-policy gateway
ip_prefix_name
import
Configure to filter the received
global routing information
filter-policy {
acl_number
| ip-prefix
ip_prefix_name
} [ gateway ] import
Cancel the filtering of the received
global routing information
undo filter-policy {
acl_number
|
ip-prefix
ip_prefix_name
} [ gateway ]
import
Table 169 Configuring to filter the distributed routes
Operation Command
Configure to filter the routes
distributed by the protocol
filter-policy {
acl_number
| ip-prefix
ip_prefix_name
} export [
routing_process
Cancel the filtering of the routes
distributed by the protocol
undo filter-policy {
acl_number
|
ip-prefix
ip_prefix_name
} export [
routing_process
]
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