Enable DvR on a Layer 2 VSN (VLAN)

About this task

On a Controller, DvR must be manually enabled at the Layer 2 VSN (VLAN) level.

Use this procedure to configure a gateway IPv4 address for a Layer 2 VSN (VLAN) subnet and then enable DvR on it. This address is pushed, along with other Layer 3 configuration information, from the Controllers to the Leaf nodes within the domain, so that the Leaf nodes can create a gateway IP service for each DvR-enabled Layer 2 VSN.

Note

Optionally, you can now use a single IP address in the subnet for every Controller by configuring the DvR VLAN IP to be the same as the DvR GW IP.

1. Enter VLAN Interface Configuration mode:

   enable

   configure terminal

   interface vlan <1–4059>

2. Configure a gateway IPv4 address for the VLAN.

   dvr gw-ipv4 {A.B.C.D}

   

   Important

   Ensure that you configure the same gateway IPv4 address on all Controllers in the domain that belong to a Layer 2 VSN (VLAN).

3. Enable DvR.

   dvr enable

   By default, DvR is disabled.

Example

Enable DvR on the Global Router VLAN.

Switch:1>en
Switch:1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config-if)#vlan create 200 type port-mstprstp 0
Switch:1(config-if)#vlan i-sid 200 20200
Switch:1(config-if)#interface vlan 200
Switch:1(config-if)#dvr gw-ipv4 192.0.2.1
Switch:1(config-if)#dvr enable
Switch:1(config-if)#ip address 192.0.2.2 255.255.0.0

Enable DvR on a VLAN associated to a VRF:

Switch:1>en
Switch:1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config-if)#vlan create 400 type port-mstprstp 0
Switch:1(config-if)#vlan i-sid 400 20200
Switch:1(config-if)#interface vlan 400
Switch:1(config-if)#vrf vrf500
Switch:1(config-if)#dvr gw-ipv4 198.51.100.1
Switch:1(config-if)#dvr enable
Switch:1(config-if)#ip address 198.51.100.2 255.255.0.0