38-86
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 38 Configuring IP Unicast Routing
Configuring Multi-VRF CE
For more information about configuring a multicast within a Multi-VRF CE, see the
Cisco IOS IP
Multicast Configuration Guide, Release 12.4
.
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.
Note
To configure an EIGRP routing process to run within a VRF instance, you must configure an
autonomous-system number by entering the
autonomous-system
a
utonomous-system-number
address-family configuration mode command.
Beginning in privileged EXEC mode, follow these steps to configure OSPF in the VPN:
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 autonomous-system
number and an arbitrary number (nnn: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
ip multicast-routing vrf
vrf
-
name
distributed
(Optional) Enable global multicast routing for VRF table.
Step 8
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 an
SVI.
Step 9
ip vrf forwarding
vrf-name
Associate the VRF with the Layer 3 interface.
Step 10
ip address
ip-address
mask
Configure the IP address for the Layer 3 interface.
Step 11
ip pim sparse-dense mode
Enable PIM on the VRF-associated Layer 3 interface.
Step 12
end
Return to privileged EXEC mode.
Step 13
show ip vrf
[
brief
|
detail
|
interfaces
]
[
vrf-name
]
Verify the configuration. Display information about the configured
VRFs.
Step 14
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.
