What does up up mean in Cisco?
Cisco Switches Interface Status Codes
| # | Line Status | Typical Cause |
|---|---|---|
| 3. | Up | An interface up/down state is not expected on LAN switch interfaces. |
| 4. | Down | Port security has disabled the interface. |
| 5. | Up | The interface is working. |
What is the meaning of the up up part of the output?
The “up/up” output on the same line as the interface name indicates the Layer 1/Layer 2 interface state. This is the same as the Status and Protocol columns in the equivalent IPv4 command. The output displays two configured IPv6 addresses per interface.
What does up mean on an Ethernet interface?
Re: Ethernet Interface: Line Protocol Up – but what does it mean. the interface has two areas that state must be in up mode to be operating correctly: line protocol state could be likend to the linkState since link state is obtained at layer2 and this is what the router uses to determine if the line protocol is up.
What’s the difference between interface and protocol in networking?
If an interface is said to be connected to the WAN, it is generally assumed that it is reachable through the internet. Protocol: A protocol is a set of rules and standards that basically define a language that devices can use to communicate. There are a great number of protocols in use extensively in networking,…
What does Ethernet down, line protocol down mean?
If it is “ethernet down, line protocol down”, then a physical layer problem like cable not connected. If only protocol is down, then check if this interface on other connecting device is UP, duplex & speed is matching, encapsulation on both ends is same.
Why is my Cisco Ethernet up and down?
Cisco ethernet interfaces are normally down / down if they don’t have a link. If you’re seeing up / down, the most likely causes are: is cable that connected to the local interface, but not connected to the far end switch, will cause that situation?