Optics and Optical Networking

Is it possible to have a SONET implementation with no protection ring? Essentially one ring in which the ONS routers reverse traffic in the event of an upstream failure? Can anyone point me to any configuration examples?Everything I see invovles 2 or...

Dear all, I really need your help if we can buy a product from CISCO to solve the issue. We will use fiber cable from the nearest POP to our customer building, but we need a special equipments at both sides to carry the PSTN POTS and E1 from the POP ...

HelloI am looking for all possible SW versions for a TCC3 card. Do you have to upgrade the IOS or just the module?

                   Trying to install a 10MEX-L1-C card in a 15454 MSTP M12 running software 09.211-011-E251 load. I receive a Mismatch of Equipment and Attributes (MEA) alarm. I have tried deleting the card and re-provisioning with no luck.The invent...

c2921 router will not bring up fibre SFPI can't get two cisco 2921 routers to talk to each otherthe setup works find in my testbed with a rj45 cross over cable between them or even with a WANEM cloud emulator(free tool). after migrating from CU  to f...

Hello, I have  switch1: 3750G 24TS-1U and switch2: 3750G 24TS-S. Port 25 on switch1 is connected to Port 26 on switch2, both ports are set to be trunk ports. I have two windows 2008 servers: server1 and server2. Server1 is connected to port 18 on sw...

Hi allFirst post, so please be gentle...We are planning to change the current infrastructure of one of our clients.As part of this process we are replacing “RJ45 to Optic Fibre converters” with “Cisco mini-GBICs”.In the attached PDF file you will see...

Hi,we have an aging network with lots of gbic lx and zx,I wanted to know what would i need to test the signal power of my lx and zx gbic, this way I could plan wich of my gbic will need to be replaced.also, i have a 7201 with a glc-zx-sm module, the ...

                   Could anyone tell me what is the correct power supply voltage and maximum current consumption of the Cisco 1000BASE-LX SFP module # 30-1299-01?  Thanks.