Is up line protocol is down Autostate enabled?

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.

Why is line protocol down?

The line protocol being down indicates a clocking or framing problem. Probable reasons for this are encapsulation and clock rate mismatches. Ethernet0 is administratively down, line protocol is down: This output indicates that a local interface has been manually shut down using the shutdown command.

How do I raise my VLAN 1?

Here are the steps to configure an IP address under VLAN 1:

1. enter the VLAN 1 configuration mode with the interface vlan 1 global configuration command.
2. assign an IP address with the ip address IP_ADDRESS SUBNET_MASK interface subcommand.
3. enable the VLAN 1 interface with the no shutdown interface subcommand.

What does VLAN 1 mean?

control plane traffic
VLAN 1 contains control plane traffic and can contain user traffic. It is recommended that user traffic be configured on VLANs other than VLAN 1, primarily to prevent unnecessary user broadcast and multicast traffic from being processed by the Network Management Processor (NMP) of the supervisor.

How do I make my line protocol down?

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.

What is status up protocol down?

Protocol refers to “Line Protocol”, which is a Cisco way of saying “the connection”. Basically, up/down means the port is available for a cable/connection, but doesn’t have one. Check the cable, or other computer.

What does it mean when an interface is down?

When you bring the interface up/down you’re merely setting a flag on the driver that the state of the interface is up or down. The NIC is still powered on and can participate in WOL (Wake on LAN) etc.

Why do you enter the no shutdown command?

The no shutdown command enables an interface (brings it up). This command must be used in interface configuration mode. It is useful for new interfaces and for troubleshooting. When you’re having trouble with an interface, you may want to try a shut and no shut.

Is VLAN 1 special?

VLAN 1 contains control plane traffic and can contain user traffic. It is recommended that user traffic be configured on VLANs other than VLAN 1, primarily to prevent unnecessary user broadcast and multicast traffic from being processed by the Network Management Processor (NMP) of the supervisor.

Can VLAN 1 be deleted?

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.

How to solve VLAN up line protocol down?

Vlan UP line protocol Down I have a 3560 switch newly installed and have created a mgmt VLAN (999) but the line prot is down and won’t come up Vlan 1 is shut down and 2 other vlan’s exist Vlan 2 (user data) and vlan 700 (voice) which work fine Users are plugged in and working, vlan exists in vlan.dat etc

Is the vlan interface on my router down?

* VLAN interface exists on the router and is not administratively down. * At least one L2 (access port or trunk) port exists and has a link up on this VLAN.

Is the Cisco 3750 VLAN up or down?

I have a weird issue here: Cisco 3750 vlan status is UP line protocol is down. – If I were to put a live interface on the VLAN then it will show UP/UP

What does administratively down mean on VLAN 1?

A port which is “Administratively down” means that the “shutdown” command has been issued on that port. This should bring the interface up and save that state for the next switch restart. 09-21-2010 12:26 PM