Why some Fast Ethernet ports on the switches are up and others are down?
Why some Fast Ethernet ports on the switches are up and others are down?
Why are 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 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 type of interface has no physical port associated with it?
The loopback interface is a logical interface internal to the router. It is not assigned to a physical port and can therefore never be connected to any other device.
How can I make a simple network?
In Part 1, you will cable the devices together according to the network topology.
- Step 1: Power on the devices. Power on all devices in the topology.
- Step 2: Connect the two switches.
- Step 3: Connect the PCs to their respective switches.
- Step 4: Visually inspect network connections.
How do I bring up a VLAN interface?
How-to Bring Up a VLAN Interface Assigned to a LAN Ethernet Port That Has an Up/down Status
- The VLAN must exist and be active in the VLAN database.
- At least one switched port in the VLAN (access or trunk) must be up.
- That port must be in the STP forwarding state.
Why would a network administrator issue the show CDP Neigbors command on a router?
Why would a network administrator issue the show cdp neighbors command on a router? To display device ID and other information about directly connected Cisco devices. Routers R1 and R2 are connected via a serial link. One router is configured as the NTP master, and the other is an NTP client.
What makes a loopback interface so versatile and useful?
A loopback interface has many uses. Loopback interface’s IP Address determines a router’s OSPF Router ID. A loopback interface is always up and allows Border Gateway Protocol (BGP) neighborship between two routers to stay up even if one of the outbound physical interface connected between the routers is down.
When is Fast Ethernet line protocol is 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. 08-20-2007 03:04 AM 08-20-2007 03:04 AM
Why are some FastEthernet ports on the switches are up and others are down?
Several reasons might cause some fastethernet ports on the switches to be up and others down. The main reason however, is the fact that by default, the ports are always down until cables are connected to the ports.
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?
How to tell if FastEthernet 0 / 24 is down?
Put a RJ-45 crimped with no cable in the port and make a note its dead. Ports drop on our Cisco’s from time to time. We dont bother replacing or sending them for repair till about ten die. by mjhundraindra ยท 13 years ago In reply to fastethernet 0/24 is down so, even u type command no shut, it still down. no physical light show up on that port.