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fastethernet down/down and fastethernet up/down


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lAwBoY's Avatar
lAwBoY lAwBoY is offline
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16-Sep-2006, 06:09 PM #1
fastethernet down/down and fastethernet up/down
What is the different?
What should i check for , cable/power on the switch

fastethernet down/down
fastethernet up/down
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16-Sep-2006, 06:22 PM #2
Where are you finding this? Are you supposed to decide between the two of these?

Are you connected to the internet?
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16-Sep-2006, 06:23 PM #3
nope.. i connected to my LAN
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16-Sep-2006, 06:39 PM #4
Go to My Network Places, and then hit View Network Connections (assuming this is XP you're using).
What do you see there?
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16-Sep-2006, 09:18 PM #5
I don't even understand the question, can you restate it in English?
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16-Sep-2006, 09:36 PM #6
"I don't even understand the question, can you restate it in English?"

Thank you! I was afraid I was the only one completely in the dark.
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16-Sep-2006, 09:51 PM #7
I'm in the dark. I have no idea...
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16-Sep-2006, 10:11 PM #8
looks like what you see on a Cisco router / switch.

If that's the case, you will need Protocol Up / Line Up.

If it's up / down, then the connection between the two devices are not present, or the other device connected is not connected properly.

If it's down / down, then you need to enable the port (if it's the switch) or the interface (if on a router)
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17-Sep-2006, 11:34 AM #9
I think the first step is a much clearer definition of the problem and the equipment involved.
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17-Sep-2006, 04:07 PM #10
well that too I'm just throwing an idea out
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17-Sep-2006, 05:42 PM #11
sorry for all the misunderstanding...
what i meant was...let say im using a cisco router connected to a switch via fastethernet interface...

there will be times where by i would see
fastethernet down/down
fastethernet up/down
on the router ...

just want to get a better understanding what would be the likely cause of problem if i see those for each sitaution
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17-Sep-2006, 06:39 PM #12
Is the switch Cisco as well?

"sh cdp neigh detai" if it is. You probably have speed/duplex mismatch and the port is flapping.
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17-Sep-2006, 06:48 PM #13
probably bad cable too. but if you do have down/down, then the port is administratively down.
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