Filtering Routing Information; Setting Passive Interfaces - Cisco ME 3400 Software Configuration Manual

Configuring Protocol-Independent Features
Command
Step 11
ip local policy route-map map-tag
Step 12
end
Step 13
show route-map [map-name]
Step 14 show ip policy
Step 15 show ip local policy
Step 16 copy running-config startup-config
Use the no route-map map-tag global configuration command or the no match or no set route-map
configuration commands to delete an entry. Use the no ip policy route-map map-tag interface
configuration command to disable PBR on an interface. Use the no ip route-cache policy interface
configuration command to disable fast-switching PBR. Use the no ip local policy route-map map-tag
global configuration command to disable policy-based routing on packets originating on the switch.

Filtering Routing Information

You can filter routing protocol information by performing the tasks described in this section.
Note When routes are redistributed between OSPF processes, no OSPF metrics are preserved.

Setting Passive Interfaces

To prevent other routers on a local network from dynamically learning about routes, you can use the
passive-interface router configuration command to keep routing update messages from being sent
through a router interface. When you use this command in the OSPF protocol, the interface address you
specify as passive appears as a stub network in the OSPF domain. OSPF routing information is neither
sent nor received through the specified router interface.
In networks with many interfaces, to avoid having to manually set them as passive, you can set all
interfaces to be passive by default by using the passive-interface default router configuration command
and manually setting interfaces where adjacencies are desired.
Beginning in privileged EXEC mode, follow these steps to configure passive interfaces:
Command
Step 1 configure terminal
Step 2 router {bgp | rip | ospf | eigrp}
Step 3
passive-interface interface-id
Step 4
passive-interface default
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Purpose
(Optional) Enable local PBR to perform policy-based routing on
packets originating at the switch. This applies to packets generated
by the switch and not to incoming packets.
Return to privileged EXEC mode.
(Optional) Display all route maps configured or only the one
specified to verify configuration.
(Optional) Display policy route maps attached to interfaces.
(Optional) Display whether or not local policy routing is enabled
and, if so, the route map being used.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enter router configuration mode.
Suppress sending routing updates through the specified Layer 3
interface.
(Optional) Set all interfaces as passive by default.
Chapter 35 Configuring IP Unicast Routing
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