Configuring Vrfs - Cisco ME 3400 Software Configuration Manual

Chapter 35 Configuring IP Unicast Routing
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Configuring VRFs

Beginning in privileged EXEC mode, follow these steps to configure one or more VRFs. For complete
syntax and usage information for the commands, refer to the switch command reference for this release
and the Cisco IOS Switching Services Command Reference, Release 12.2.
Command
Step 1
configure terminal
Step 2 ip routing
Step 3 ip vrf vrf-name
Step 4 rd route-distinguisher
Step 5 route-target {export | import | both}
route-target-ext-community
Step 6
import map route-map
Step 7 interface interface-id
Step 8 no shutdown
Step 9 ip vrf forwarding vrf-name
Step 10 end
Step 11
show ip vrf [brief | detail | interfaces]
[vrf-name]
Step 12
copy running-config startup-config
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.
OL-9639-07
If even one VRF is configured than 41 policies can be configured.
If more than 41 policies are configured then VRF cannot be configured.
VRF and private VLANs are mutually-exclusive. You cannot enable VRF on a private VLAN.
Similarly, you cannot enable private VLAN on a VLAN with VRF configured on the VLAN
interface.
VRF and policy-based routing (PBR) are mutually-exclusive on a switch interface. You cannot
enable VRF when PBR is enabled on an interface. In contrast, you cannot enable PBR when VRF is
enabled on an interface.
Purpose
Enter global configuration mode.
Enable IP routing.
Name the VRF, and enter VRF configuration mode.
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)
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.
(Optional) Associate a route map with the VRF.
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.
Enable the interface if necessary. By default, UNIs and ENIs are
disabled and NNIs are enabled.
Associate the VRF with the Layer 3 interface.
Return to privileged EXEC mode.
Verify the configuration. Display information about the configured
VRFs.
(Optional) Save your entries in the configuration file.
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
Configuring Multi-VRF CE
35-85