I just installed a new switch in a new area on our main campus. I've cabled 2 uplinks for redundancy to both our cores. Yesterday, when I installed them, g0/1 went green and lit up. I couldn't get g0/2 to go green. Today, I pulled the fiber out of the gbic and as I put it partially in, the link went green but, when I put the fiber all the way into the gbic, the port would go dark. Right now I have it partially in and it is green and up but blocking as expected. Would this behavior(0f the fiber not being able to be plugged all the way in) point to a faulty gbic?
Would you be able to swap with two fiber cables and see the same problem with second GBIC in first port , if so then it would be surely Fiber cable and is not then it would be GBIC being lose or malfunctioning.
It appears that it is not the gbic or the fiber as if I put the fiber that was failing into the gbic that is working, it comes up as well. And, if I put the fiber that was working in the gbic that was not working it also does not work.
But, there is more to the story that I didn't think had any relevance til now. The side that is working fine, is 50um all the way through to the core. The side that is not working properly, has one segment that is 62.5um. Could this be why the link comes up when I pull it out slightly?
ok Reza, thanks for the response. Actually it is all 50um except for one small piece that is 62.5. I will change that out next and to see what happens. I'm curious though, why it works when I pull it out slightly. Not only do I get a green link light but, it actually sends and receives traffic. As if pulling it out changes the size of the beam the correct amount to be compatible with the 62.5. I don't know but, in the mean time I am going to shut the port til I figure it out.
One last question: The gbics are LX. Can a signal from an LX gbic be carried by 62.5 if the whole path was 62.5?
I could try SX but, I'm concerned of the distance. I'm not really sure of the exact distance either. I noticed that the switch in the downstairs closet in the same building was using LX so, I thought anything from the second floor closet should use LX since it is even a further distance from the core. Should I try SX?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.