What is Autostate exclude?
SVI Autostate exclude enables you to exclude the access ports/trunks in defining the status of the SVI (up or down) even if it belongs to the same VLAN. Moreover, even if the excluded access port/trunk is in up state and other ports are in down state in the VLAN, the SVI state is changed to down.
What is SVI Autostate?
Switch Virtual Interfaces, or SVIs on Cisco IOS use a feature called autostate to determine the interface availability. So if you were to simply turn up an SVI with an IP address, that interface would not be reachable until those conditions are met.
Why is SVI interface down?
Following are most common cases when troubleshooting SVI in up/down state: Make sure that the VLAN this SVI represents exists in the VLAN database. So, if you are creating an SVI for vlan 10, make sure that you have already created that VLAN. SVI has a feature called “autostate” that is enabled by default.
Is down VLAN is down line protocol is down?
Data link layer state of the VLAN interface: DOWN—The link layer protocol state of the interface is down. UP—The link layer protocol state of the interface is up.
Why is my VLAN administratively down?
The VLAN goes to the administratively down state if two or more VLANs are configured in the Cisco Catalyst 2940, 2950, 2900XL and 3500XL Series switches.
Why VLAN line protocol is down?
On Cisco switches, after creating a new VLAN, we have noticed that VLAN interface is up however protocol doesn’t come up. This is because of Autostate feature that is implemented on Cisco switches with CatOS and IOS platforms and also activated by deafult.
Can I create VLAN on router?
You can configure the software to allow traffic on a VLAN to be treated as if the VLAN were a router port. A port can be either a VLAN port or a router port, but not both. However, a VLAN port may be part of a VLAN that is itself a router port. Section , Configuring VLAN Routing via Web Interface.
Why is VLAN interface down?
DOWN—The interface is administratively up, but its physical state is down. The VLAN of this VLAN interface does not contain any physical ports in up state. The ports might not be connected correctly or the links might have failed.
Why is VLAN interface up down?
The VLAN interfaces have to fulfill these general conditions to be up/up: The VLAN exists and is in active status on the switch VLAN database. The VLAN interface exists on the switch and is not administratively down. At least one L2 (access port or trunk) port is in spanning-tree forwarding state on the VLAN.
Can you shutdown VLAN 1?
The only way we can remove VLAN 1 is through the “switchport trunk allowed vlan remove 1″ command. A good thing of clearing VLAN 1 is user data cannot travel via this VLAN anymore. BPDU traffic is also banned on this VLAN.