dynamic
Ports are static.
Protocol VLAN configuration mode
Dynamic ports within any protocol VLAN age out after 10 minutes if no member protocol traffic is received on a port within the VLAN. Once you dynamically add a port to a protocol VLAN, you cannot configure routing parameters on the port. You cannot dynamically add a port to a protocol VLAN if the port has any routing configuration parameters.
The following example shows the IP protocol VLAN configured with dynamic ports.
device(config)# vlan 10 device(config-vlan-10)# ip-proto name IP_Prot_VLAN device(config-vlan-ip-proto)# dynamic
The following example shows configuring port-based VLAN 10, and then configuring an IP subnet VLAN within the port-based VLAN with dynamic ports.
device(config)# vlan 10 name IP_VLAN by port device(config-vlan-10)# untagged ethernet 1/1/1 to 1/1/6 added untagged port ethernet 1/1/1 to 1/1/6 to port-vlan 10. device(config-vlan-10)# ip-subnet 10.1.1.0/24 name Mktg-LAN device(config-vlan-ip-subnet)# dynamic
The following example shows configuring port-based VLAN 20, and then configuring an IPX network VLAN within the port-based VLAN with dynamic ports. These commands create a port-based VLAN on chassis ports 1/2/1 through 1/2/6 named "Eng-LAN", configure an IPX network VLAN within the port-based VLAN, and then add ports from the port-based VLAN dynamically.
device(config)# vlan 20 name IPX_VLAN by port device(config-vlan-10)# untagged ethernet 1/2/1 to 1/2/6 added untagged port ethernet 1/2/1 to 1/2/6 to port-vlan 20. device(config-vlan-10)# ipx-network abcd ethernet_ii name Eng-LAN device(config-vlan-ipx-network)# dynamic