Optics and Optical Networking

Hi,I have a problem with X2 transceivers from "CISCO-SUMITOMO".The WS-C3560E-12D-S Catalyst Switch generates the following syslog message due to the fact that it cannot read out the operating voltage value:%SFF8472-5-THRESHOLD_VIOLATION: Te0/8: Volta...

Hello,I am moving a M6 shelf to another location this weekend. I am asked to check if the attenuation is still correct. I know that we can get the span values from maintenance > dwdm > retrieve spannloss. So far so good. What happends if the attenuat...

Hello. I'm choosing SFP for cisco 3750-X. In datasheet for GLC-BX-U(D) min transmit power is -9 dBm, min receive power is -19.5 dB. So max insertion loss in channal is about 10.5 dB. But in this datasheet it's just 5.5 dB for GLC-BX-D and 6 dB for GL...

Hello,We use 15454 MSPPs (r9.0) on our network.We're interested in buying ML-MR-10 cards because it provides switching capabilities and aggregation.We want to use these cards to connect to a third-party using POS.This third-party network only support...

Hello there!We are having a situation in our DataCenter with some CWDM GBICs that stopped working. Some did enter in err-disabled and some are showing as not connected. One of them did show link-flap as the err-disabled reason. We did troubleshoot te...

hi when i try to connect (glc-fe-100bx-d) sfp with my cisco switch ME3400 (ME-3400-24FS-A),i got this error (GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Fa0/15 has bad crc)So I try to change the software release   from (Cisco IOS Release 12...

Does anyone know how I would upgrade UPSR spans from OC48 to OC192 cards when the OC48 cards are not in the high speed slots. ie I need to move the OC48 cards first with out deleting and reinstalling every cct before I can use the Span Wizard upgrade...

I have a Cisco ONS router that is getting a "Facility low rx power" error on an OC192 card.Anyone know what this means or how to troubleshoot? I can't seem to find much in the documentation.thanks           

Does anyone know what ONS nodes would be using TCP port 1095 for? The only documentation I can find on the ports and protocols used by TCC2P cards can be viewed through the following link. Look at Table 14-6. There is no mention of port 1095 being us...

                   Hi everybody,please what is the replacement part number for this optical attenuator?ATT-SC-PC-10DB=brsam

Hello,I have a doubt regarding the support of CVR-X2-SFP - aka twingig adapter - in WS-X4013+10GE (Supervisor II+10GE in a 4507R-E chassis).This sup has 2 10GE and 4 GE interfaces and the 4 GE interfaces are all occupied. We need to connect 2 more sw...