S1720, S2700, S5700, and S6720 V200R011C10 Configuration Guide - Interface Management
This document describes the principles and configurations of interfaces and provides configuration examples.
This document describes the principles and configurations of interfaces and provides configuration examples.
Configuring a VLANIF Interface
Context
- The corresponding VLAN must have been created.
- A physical interface or Eth-Trunk in Up state has been added to the corresponding VLAN.
Procedure
- Run system-view
The system view is displayed.
- Run interface vlanif vlan-id
A VLANIF interface is created and the VLANIF interface view is displayed.
- Run ip address ip-address { mask | mask-length } [ sub ]
An IP address is assigned to the VLANIF interface.
- (Optional) Run damping time delay-time
The delay after which the VLANIF interface goes Down is set.
By default, the delay is 0 seconds, that is, a VLANIF interface goes Down immediately after the corresponding VLAN goes Down.
Setting a delay after which a VLANIF interface goes Down prevents network flapping caused by status change of the VLANIF interface. This function is also called VLAN damping.
Enable the VLAN damping function on the VLANIF interface. After the last member interface in Up state in the corresponding VLAN goes Down, the VLAN damping-enabled device reports the VLAN Down event to the VLANIF interface after the configured delay. If a member interface in the VLAN goes Up during the delay, the VLANIF interface remains in Up state.
- (Optional) Run mtu mtu
The MTU of the VLANIF interface is set.
By default, the MTU of a VLANIF interface is 1500 bytes.