Optics and Optical Networking

Using two C3850 48 port, stacked network switches each with a C3850-NM-4-1g module.  Adding SFP modules for fiber single-mode LC connectors.  Ports are configured the same and not shut down, active.  None of switch 1 shows activity using the SFP modu...

We are upgrading out internet connection to 10 gbps.   Which uplink transceiver will we need for a fiber connection?

Hi AllI have a 3064 and a 9372tx interconnected with a compatible QSFP DAC cable.Problem is the interfaces won't come up. Status not connected.The 3064 hardware profile was initially set to 64x10G but I changed that to 48x10g+4x40g.I have forced both...

I need clarification on using the CVR-QSFP-SFP10G 1) I believe on 9372X the speed group ports are 49-54 2) because the CVR-QSFP-SFP10G converts the 40G port to 10G is the speed-group command 10000 or 40000? 3) does the speed-group command only need t...

Hi, We cannot see the transceiver detail as below. ================ Hardwarecisco Nexus9000 C9372TX chassis SoftwareBIOS: version 07.17NXOS: version 7.0(3)I1(2)BIOS compile time: 09/10/2014NXOS image file is: bootflash:///n9000-dk9.7.0.3.I1.2.binNXOS...

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...