ip follow ve
A virtual routing interface does not share its IP address with other interfaces.
Virtual routing configuration mode
When this command is configured, one virtual routing interface is configured with an IP address, while the other virtual routing interfaces are configured to use that IP address, thus, they "follow" the virtual routing interface that has the IP address. This is helpful in conserving IP address space.
When configuring IP Follow, the primary virtual routing interface should not have ACL or DoS Protection configured. It is recommended that you create a dummy virtual routing interface as the primary and use the IP-follow virtual routing interface for the network. Global Policy Based Routing is not supported when IP Follow is configured. IPv6 is not supported with IP Follow. FastIron devices support IP Follow with OSPF and VRRP protocols only.
The following example configures IP Follow.
device(config)# vlan 2 name IP-Subnet_10.1.2.0/24 device(config-vlan-2)# untag ethernet 1 to 4 device(config-vlan-2)# interface ve 2 device(config-vif-2)# ip address 10.10.2.1/24 device(config-vif-2)# interface ve 3 device(config-vif-3)# ip follow ve 2 device(config-vif-3)# interface ve 4 device(config-vif-4)# ip follow ve 2