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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 35 Configuring IP Unicast Routing
Configuring Protocol-Independent Features
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:
Step 11
ip local policy route-map
map-tag
(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.
Step 12
end
Return to privileged EXEC mode.
Step 13
show route-map
[
map-name
]
(Optional) Display all route maps configured or only the one
specified to verify configuration.
Step 14
show ip policy
(Optional) Display policy route maps attached to interfaces.
Step 15
show ip local policy
(Optional) Display whether or not local policy routing is enabled
and, if so, the route map being used.
Step 16
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
router
{
bgp
|
rip
|
ospf
|
eigrp
}
Enter router configuration mode.
Step 3
passive-interface
interface-id
Suppress sending routing updates through the specified Layer 3
interface.
Step 4
passive-interface default
(Optional) Set all interfaces as passive by default.
Summary of Contents for ME 3400 Series
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