Optics and Optical Networking

So, a while back our fiber vendor who we lease from was doing some work (unknown what) between Point A and Point B. Ever since we keep losing our neighborship with the next IE switch in the daisy-chain. They've had me change out the optics, but I sti...

Hi all,One of our new project requirement is to transmit 100MHz clock over optical fiber, 1550nm, single mode fiber. transmitter board have 100MHz pure clean clock source with phase noise -130dBc/Hz at 100Hz offset, this clock need to transmit using ...

Hello, what is real life power consumption of WS-C4500X-16SFP+ switch? All 16 SFP+ ports would be used for 10G optical and metallic modules. 2x AC power supply.  I know that nominal power consumption should be around 400W. I want to know if this is c...

Hi,Using  one end GLC-LH-SMD and on other end GLC-ZX-SM  is recommndable ? I see it is working Does it  harm the sfp card  or the device ? Thanks 

What does the ++= represent on SFP part number? I can't find anything in the data sheets that explains the meaning of the ++= portion of Product number GLC-TE++=. I've seen this present on other product numbers such as SFP-10G-LR++=. Can someone plea...

Is there official documentation from Cisco regarding the Mean Time Between Failures (MTBF) of their SFP's?I'm specifically looking for the GLC-LH-SMD, but would love to know where it can be found for all of Cisco's optics. I can find the rating for t...

Hello.We recently purchased SFPs for our C9200L-48P-4X switch which is running IOS-XE 16.12.4. The SFPs are SFP-10G-SR, when inserted into the switch, we are getting the errors"The inserted SFP module with interface name Te1/1/4 is not supported""gbi...

I previously included this in a more complicated query (“Interoperable ASR1000 XFP for SFP-10G-LRM ?”) that didn’t generate any responses, so here is the revised question:Will a SFP-10G-LRM interoperate with a SFP-10G-LR if I connect using single mod...

I want to know how a Cisco switch detects fiber link is not connected.I know how UDLD works and tested it between two switches. Then I disabled UDLD globally and under the port but the port was still down while RX side of fiber was OK.interface Ether...

Does anyone know if the AXIS T8612 Multimode SPF Transceiver is compatible with the Cisco 350 Ethernet Switch?

              - FYI : https://www.cisco.com/c/en/us/support/docs/field-notices/724/fn72441.html  M.

Hi, I have a switch  C9500-16X and want to downgrade 40G port to 10G port. I have installed cvr-qsfp-sfp10g in 40G port of switch and  SFP-10G-SR-S in cvr-qsfp-sfp10g. Following is the output of "show idprom interface fo2/1/1" Switch#show idprom inte...

Let me make sure Cisco's SFP module, GLC-FE-100FX. While the GLC-FE-100FX specification states MMF, the wavelength is 1310nm.My understanding is that1310nm is generally recognized as a single specification.Do you see any problems if I use a common MM...

I ask for any reliability information associated with  SFP GLC-LX-SM-RGD product that is not used in a CWDM application. Do you have information like Telecordia or other standards for reliability claim? Thanks in advance.