How To Delete A Subinterface On Cisco Router. An 802.1q vlan subinterface must have a configured vlan id to send and receive traffic; Without a vlan id, the subinterface remains in the down state.
To make a subinterface the default handler of untagged packets coming to the port, use this keyword. To use commands of this module, you must be in a user group associated with a task group that includes appropriate task ids. A subinterface is a virtual interface created by dividing one physical interface into multiple logical interfaces.
But show ip interface brief does show them because the config element is still present. To delete a subinterface, use the no form of this command. I have another cisco question.
The Range Is From 1 To 4000.
An 802.1q vlan subinterface must have a configured vlan id to send and receive traffic; No int vlan x will remove any svi's. When you delete the subinterface (using the no interface command) these elements are still in the data structure. To create a vlan subinterface, use the interface command in global configuration mode. This module provides command line interface (cli) commands for configuring 802.1q vlans on the cisco crs router cisco ncs 6000 series router.
First, We Remove The Ip Address On The Physical Interface.
Snmp based discovery mechanisms still report deleted subinterfaces (they access that table) and are not able to distinguish them from active subinterfaces. When you delete the subinterface the content associated with the interface structure is removed but the entry in the structure remains and the only way to get rid of it is to reload the router. I'g trying to remove a vlan and sub interface to starting time over on my dhcp testing that i have a thread on, merely i cant get the existing vlan and subinterface to delete from the router. Configuration of the deleted subinterfaces is kept in some table. To make a subinterface the default handler of untagged packets coming to the port, use this keyword.
Once done, reload the router next chance you get to completely clear the deleted config. To use commands of this module, you must be in a user group associated with a task group that includes appropriate task ids. First, we remove the ip address on the physical interface.
To Make A Subinterface The Default Handler Of Untagged Packets Coming To The Port, Use This Keyword.
This also explains why you can not. If you configure this keyword on the subinterface, and ip and. Create vlans (vlans 10 and 20) on the l2 switch. When you delete the subinterface (using the no interface command) these elements are still in the data structure. The interface number can be anything you want.
Once Done, Reload The Router Next Chance You Get To Completely Clear The Deleted Config.
But show ip interface brief does show them because the config element is still present. Without a vlan id, the subinterface remains in the down state. Add when you choose an unconfigured physical interface and click add. Remember to copy run start before you reload or the deleted interfaces / vlan's will come back. To assign a vlan id to a subinterface (or to modify the vlan id that is currently assigned to a subinterface), use the dot1q vlan command in subinterface configuration mode.
