Tech Knowledge for Network Engineer CCIE , CCNP

Cisco  1-port 10GE (SFP+) Interface Module This interface module can operate in a number of different modes, using specific Bandwidth subscription or oversubscription configuration, dependent on Interface module slot and optics use. The default mode is delivering one port of 10 Gigabit Ethernet and eight ports of Gigabit Ethernet using regular SFP+ and SFP interfaces respectively on the Cisco NCS 560 Series Routers. Optional mode two is delivering one port of 10 Gigabit Ethernet and sixteen ports of Gigabit Ethernet using one regular SFP+ and eight bi-directional Compact SFP interfaces respectively on the Cisco NCS 560 Series Routers. The Interface Module mode selection is available through a Command Line Interface command. Interface Module Slot compatibility and subscription modes can be found in table 5. This module is capable to support MACsec in a future release. https://www.cisco.com/c/en/us/products/collateral/routers/network-convergence-system-500-series-ro...

Compact SFP (CSFP) – What it is and when it is used? BiDi SFP principle: If we go further BiDi SFP modules are as well very popular, key advantage for BiDi SFP comparing to regular SFP is that we only need to use 1 optical fiber to make same 1xGE transfer. In situations where fiber resources are scarce or operator needs to rent out fiber, BiDi SFP brings significant benefit to the network design and can reduce the cost a lot. BiDi SFPs work in pairs, there are A side and B side modules. A side modules on standard distances 3-40km have Tx: 1310nm and Rx:1490nm or Tx:1310nm and Rx:1550nm, while B Side modules on standard distances will have Tx:1490nm Rx:1310nm or Tx:1550nm and Rx:1310nm. We should connect them accordingly in pairs Tx:1310nm/Rx:1490nm A side together with Tx:1490nm/Rx:1310nm B side OR Tx:1310nm/Rx:1550nm A side together with Tx:1550nm/Rx:1310nm B and we will get the link running. Compact SFP (CSFP) principle: Compact SFP (CSFP) goes even further, by using ...