What is protocol down on a Cisco router?

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.

What does DOWN DOWN mean on Cisco switch?

‎01-16-2008 09:06 AM. down/down almost always is a layer 1 issue, either the port, the cable. I’d test both of these on working interfaces to rule out other possibilities. If you have a configuration problem you’d have up/up or up/down but just wouldn’t be able to get traffic to go anywhere.

Why did the show interface FastEthernet 0 0 say that the interface is up?

FastEthernet/0 is up, line protocol is up: this means that the interface is physically up and that the protocol is operational. When you use Ethernet, the protocol is normally up unless you configured port-security or BPDU guard.

What causes interface overruns?

Causes of Interface Overruns. Interface overrun errors are usually caused by a combination of these factors: Hardware level – The rate at which packets come into the interface is too fast, which causes the FIFO queue to fill before the ASA software can pull the packets off.

What does Rxload mean?

input rate / configured bandwidth
rxload = input rate / configured bandwidth * 255. In other words, txload and rxload express the fraction of used bandwidth (as configured by the bandwidth command on the interface) by the traffic flowing in either direction, on a scale of 1-255.

What is the reason if protocol of an interface is down and status of an interface is up?

if the Line status is up,a protocol status of down usually is caused by mismatched data link layer configuration For an example serial interfaces has their combination when one router has configured to use PPP(Point_to_Point Protocol) and other remains the default HDLC (Higher_level Data Link Control) configuration and …

How do I know if GRE tunnel is working?

To display GRE tunneling Information, use the following commands:

1. show ip interface.
2. show ip route.
3. show ip interface tunnel.
4. show ip tunnel traffic.
5. show interface tunnel.
6. show statistics tunnel.

Why is my interface fa0 / 0 on my router down?

Your interface fa0/0 on router is in up down state. So it can’t work. – speed and duplex to auto on router – or – you need to change speed and duplex accordingly on PC. 08-09-2017 08:31 AM

Why is fastethernet0 / 0 line protocol down?

In my experience when a cable is not plugged in the Ethernet/Fast Ethernet will show to be line up line protocol down, which is the exact symptom that you report. I suspect that if someone physically checks the connection that they will find that the interface is not connected to a switch or anything.

Is the interface up or the line protocol down?

The Interface says it is up, but line protocol is down. I have tried several times to get the line protocol up but i some how just cant get it to start. Please see attached config file for the config of the router.

What does ethernet0 down, line protocol down mean?

Ethernet0 is administratively down, line protocol is down: This output indicates that a local interface has been manually shut down using the shutdown command. I configure the interface fa0/0 with IP address and no shut (the cable is not attached to this interface). The interfece goes to up and up state…and after a while to protocol down state.