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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 35 Configuring IP Unicast Routing
Configuring Multi-VRF CE
•
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.
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
.
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.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
ip routing
Enable IP routing.
Step 3
ip vrf
vrf-name
Name the VRF, and enter VRF configuration mode.
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 and ENIs 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.
Summary of Contents for ME 3400 Series
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