Configuring VRF-lite

Static inter-VRF routing

Static inter-VRF routing involves creating static routes in one VRF instance whose egress VLAN is in a different egress VLAN. These static routes must specify both the egress VLAN and next hop IP address.

The following diagram illustrates use of static routing to achieve inter- VRF communication in VRF-lite.

 

 

 

 

1 9 2 . 1 6 8 . 2 0 . 0/2 4

1 9 2 . 1 6 8 . 2 0 . 0/2 4

 

 

 

 

 

1 9 2 . 1 6 8 . 1 . 0/2 4 global default VRF domain

 

VRF green

1 9 2 . 1 6 8 . 5 0 . 0/2 4

 

 

 

 

VRF red

 

 

 

 

 

VRF blue

 

 

 

 

 

 

 

 

192.168.20.6

 

 

 

192.168.50.10

 

 

 

 

VLAN20

VLAN10

 

VLAN10

 

VLAN30

 

192.168.1.5

 

 

192.168.20.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Device A

 

Device B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEVICE A STATIC ROUTES CONFIGURATION

DEVICE B STATIC ROUTES CONFIGURATION

 

 

ip route vrf red 192.168.20.0/24 vlan10

ip route vrf blue 192.168.20.0/24 vlan10

From source vrf red, create a static route to

From source vrf blue, create a static route to 192.168.20.0/24

192.168.20.0/24 to access target vlan10. Target vlan is

to access target vlan10. Target vlan is required when

required when performing static IVR.

performing static IVR.

ip route 192.168.1.0/24 vlan20

ip route vrf green 192.168.50.0/24 vlan30

From the source global VRF domain, create a static route to

From the source vrf green, create a static route to

192.168.1.0/24 to access target vlan20. Target vlan is

192.168.50.0/24 to access target vlan30. Target vlan is required

when performing static IVR.

required when performing static IVR.

 

 

 

ip route vrf red 192.168.50.0/24 192.168.20.6 vlan10

ip route vrf blue 192.168.1.0/24 192.168.20.5 vlan10

From source vrf red, create a static route to

From source vrf blue, create a static route to 192.168.1.0/24

192.168.50.0/24 with a next hop of 192.168.20.6

with a next hop of 192.168.20.5 egressing target vlan10.

 

egressing target vlan10. Target vlan is required when

Target vlan is required when performing static IVR.

 

performing static IVR.

 

ip route 192.168.50.0/24 192.168.20.6

ip route vrf green 192.168.1.0/24 192.168.20.5

From the global VRF domain, create a static route to

From the source vrf green, create a static route to 192.168.1.0/

192.168.50.0/24 with a next hop of 192.168.20.6.

24 with a next hop of 192.168.20.5. Static routes to networks

within a VRF instance do not require the target vlan.

Static routes to networks within a VRF instance do

 

not require target vlan.

 

 

 

Configure VRF-lite Page 17

Page 17
Image 17
Allied Telesis C613-16164-00 REV E Static inter-VRF routing, Ip route 192.168.50.0/24 Ip route vrf green 192.168.1.0/24

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