Configuring Vrfs - Cisco 3750G - Catalyst Integrated Wireless LAN Controller Configuration Manual

Configuring Multi-VRF CE
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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
ip vrf forwarding vrf-name
Step 9 end
Step 10 show ip vrf [brief | detail | interfaces]
[vrf-name]
Step 11 copy running-config startup-config
Catalyst 3750 Switch Software Configuration Guide
35-68
BGP makes it easy to pass attributes of the routes to the CE.
–
Multi-VRF CE does not affect the packet switching rate.
VPN multicast is not supported.
If no VRFs are configured then 104 policies can be configured.
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.
Chapter 35
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.
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.
Configuring IP Unicast Routing
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