Router's serial : down down. Router's ethernet: up down. Switch's : down down. What is that so special for ethernet? For serial, I was informed that the status will be up down if a cable is attached but has some mismatch for L2 configuration.FastEthernet0 is up, line protocol is down: In this case, Physical layer is operational. The line protocol being down indicates a clocking or framing problem. Probable reasons for this are encapsulation and clock rate mismatches.An obvious but sometimes overlooked cause of port connectivity failure is an incorrect configuration on the switch. If a port has a solid orange light, this means the software inside the switch shut down the port, either by way of the user interface or by internal processes. Note: Some port LEDs of the platform work differently in regard to STPThe issue is that every time the switch is started up the ports connected to IP phones go down (down down to be more precise). At the same time, trunk port and port connected to server are stable. Below is the example of those ports config (really nothing special about it): HQ-SW#sh run int f5/0/2It is a bad port because when I plug the cable on another swithc with the same config, the interface is showing up/up. amb1s1, Since you configured that switch port as a vlan access port, that port should be connected to a host and not another switch.
FastEthernet0 is up, line protocol is down..Why
As a quick fix, I set the speed on the main switch to be 10Mbps for the port that connects to the switch in the cabinet. After doing that however, the port now shows down (notconnect). I've tried setting the speed back to 100, and shutting down/starting the port again, but it never reconnects.In this particular usage, the switch's downlink ports are dual speed copper ports. The uplink ports are gig and copper/fiber capable. The expectation might be users hosts will connect to the downlink ports and the uplink ports will take the aggregate traffic into the rest of the network.Answers Note: The Ethernet ports on the 2960 switches are autosensing and will accept either a straight-through or a cross-over cable for all connections. If the switches used in the topology are other than the 2960 model, then it is likely that a cross-over cable will be needed to connect the two switches.At a very large site I worked at (around 10,000 ethernet ports, all on Extreme switches), we would setup every switch to be 100/full by default and leave the devices set to auto.
Troubleshooting Switch Port and Interface Problems - Cisco
PartsStack#show interface fastEthernet 1/0/22 FastEthernet1/0/22 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is 001d.a262.c518 (bia 001d.a262.c518) Description: Voice and Data MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not setAnswers Note: The Ethernet ports on the 2960 switches are autosensing and will accept either a straight-through or a cross-over cable for all connections. If the switches used in the topology are other than the 2960 model, then it is likely that a cross-over cable will be needed to connect the two switches.Interface S1 S2 Status Protocol Status Protocol F0/1 down down up up F0/6 up up down down F0/18 down down up up VLAN 1 adminisrativly down down up up Why are some FastEthernet ports on the switches are up and others are down? Because the ports that are up are ther ones that are connected.Access ports are used primarily for hosts and can only carry traffic for a single VLAN. Access Port are the frames received on the interface are assumed to not have a VLAN tag and are assigned to the specified VLAN. Internal security policies may mandate that an unused port must be protected by several layers…I can put some really messed up layer-3 addressing on the interfaces to the point that layer-3 doesn't work, but that doesn't do anything to bring down layer-1 or layer-2. - Ron Maupin ♦ Sep 26 '18 at 2:55
Find a solution for your query ✅ "Why are some fastethernet ports on the switches are up and others are down? ..." in 📘 Computers and Technology if you're doubtful about the correctness of the answers or there is not any solution, then try to use the sensible seek and in finding answers to the similar questions.
Search for Other AnswersLinux Shell - Linux - -
0 comments:
Post a Comment