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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Chapter 32 Configuring IP Unicast Routing
Configuring Multi-VRF CE
Use the no ip vrf vrf-name global configuration command to delete a VRF and to remove all interfaces
from it. Use the no ip vrf forwarding interface configuration command to remove an interface from the
VRF.
Configuring a VPN Routing Session
Routing within the VPN can be configured with any supported routing protocol (RIP, OSPF, EIGRP, or
BGP) or with static routing. The configuration shown here is for OSPF, but the process is the same for
other protocols.
Beginning in privileged EXEC mode, follow these steps to configure OSPF in the VPN:
Step 4
rd route-distinguisher Create a VRF table by specifying a route distinguisher. Enter either an
AS number and an arbitrary number (xxx:y) or an IP address and
arbitrary number (A.B.C.D:y)
Step 5
route-target {export | import | both}
route-target-ext-community
Create a list of import, export, or import and export route target
communities for the specified VRF. Enter either an AS system number
and an arbitrary number (xxx:y) or an IP address and an arbitrary
number (A.B.C.D:y). The route-target-ext-community should be the
same as the route-distinguisher entered in Step 4.
Step 6
import map route-map (Optional) Associate a route map with the VRF.
Step 7
interface interface-id Specify the Layer 3 interface to be associated with the VRF, and enter
interface configuration mode. The interface can be a routed port or SVI.
Step 8
no shutdown Enable the interface if necessary. By default, UNIs are disabled and
NNIs are enabled.
Step 9
ip vrf forwarding vrf-name Associate the VRF with the Layer 3 interface.
Step 10
end Return to privileged EXEC mode.
Step 11
show ip vrf [brief | detail | interfaces]
[vrf-name]
Verify the configuration. Display information about the configured
VRFs.
Step 12
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 ospf process-id vrf vrf-name Enable OSPF routing, specify a VPN forwarding table, and enter router
configuration mode.
Step 3
log-adjacency-changes (Optional) Log changes in the adjacency state. This is the default state.
Step 4
redistribute bgp
autonomous-system-number subnets
Set the switch to redistribute information from the BGP network to the
OSPF network.
Step 5
network network-number area area-id Define a network address and mask on which OSPF runs and the area
ID for that network address.
Step 6
end Return to privileged EXEC mode.
Step 7
show ip ospf process-id Verify the configuration of the OSPF network.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.