What is status up and protocol down?
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 …
What does it mean when an interface is down down?
If the line shows up down then we believe that we have physical connectivity but no ability to transmit and receive on the interface. And if the interface shows up up then we have physical connectivity and the ability to transmit and receive on the interface. So down down indicates a problem with the connection.
Why some FastEthernet ports on the switches are up and other are down?
Reflection Question. Why some FastEthernet ports on the switches are up and others are down? The FastEthernet ports are up when cables are connected to the ports unless they were manually shutdown by the administrators. Otherwise, the ports would be down.
What does FastEthernet 0 0 mean?
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. When a violation occurs, you might see err-disabled here.
Is administratively down line protocol is down?
Explanation. The CLI status output “Serial0/0/0 is administratively down, line protocol is down” means that either the router interface is configured with the “shutdown” interface configuration command or a duplicate IP address exists.
What is the reason that the interface status is administratively down line protocol down?
The wrong type of cable is connected to the interface. administratively down interface using no shutdown command.
Why did we use a crossover cable between the switches?
The ports are wired such that a straight through cable connects the output of one to the input of the other. Electrically, the ports are the same, but the pins are in a different order. So, if you connect a switch to a switch, or a PC to a PC, but the wires don’t line up! This is where a crossover cable comes in.
What is the difference between Fast Ethernet and Gigabit Ethernet?
A Fast Ethernet switch can transfer data packets at a rate of 10 megabits per second. A Gigabit Ethernet switch transfers data packets at relatively higher speeds of one gigabit per second. In comparison, a Gigabit Ethernet switch can transfer data packets at around 100 times faster than a Fast Ethernet switch.
What does FA mean in Cisco?
on a cisco switch ethernet interface fa 0/1 mean. fa means fast ethernet.
Why line protocol is down 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 is administratively down Cisco?
Administratively down means that the interface has a shutdown command.