Configuring VLANs on Multiple Subnets

Last published : Sep 30, 2026
To configure a single VLAN across multiple subnets, you must add a VIP for the VLAN and configure the routing appropriately. The following figure shows a single VLAN configured across multiple subnets.
Figure 1. Multiple Subnets in a Single VLAN
vlan single vlan
To configure a single VLAN across multiple subnets, perform the following tasks:
  1. Disable Layer 2 mode. For the procedure to disable Layer 2 mode, see Packet forwarding modes.
  2. Add a VIP address. For the procedure to add a VIP address, see Configuring and Managing Virtual IP Addresses (VIPs).
  3. Configure RNAT rule. For the procedure to configure the RNAT ID, see Configuring RNAT.
Related information
Configuring a VLAN