When installing network equipment, avoiding errors and faults is the first priority. However, problem situations can occur unexpectedly. For example, after trying to install a brand new SFP transceiver, the router does not recognize it correctly or leads it to malfunctioning or becoming dysfunctional. One...
A modern transceiver, including a 10G SFP transceiver, could not be imaginable without Digital Diagnostic Monitor (SFP DDM) approach that allows specialists to promtly isolate faults and errors in its operation. DDM monitors SFP module’s temperature, receiver and transmitter power, transmitter bias current and supply voltage...
Imagine a scenario where you want to implement a network topology using DAC cables. Let’s try to connect for example Dell QLogic 57810S 10GB PCI card with HP FlexFabric 5930 Switch using a 10 metres long DAC cable. After inserting the DAC cable in both equipment...
How Cisco Compatibility Matrix can be employed to select the correct products for Cisco equipment? The portfolio of Cisco equipment and products is very extensive, and it is a challenge to know what suits what. With this in mind, Cisco have established two specific tools...
The power budget is the difference between the output power of the transmitter and the input power requirements of the receiver. Let's as example calculate optical transceiver power budget for EDGE model CWDM-10G-SFP-40-27: To calculate power budget we should use following formula: Min output power - (receiver sensitivity)...
In case if using Cooper SFP modules in 5900E series switch, the port wont rise (go in to UP state), the Administrator must issue following command in order to change attribute which will let switch port to accept the SFP Cooper transceiver: If You have any...
If there is a scenario where DAC cable is used in ZTE 5900E and CRC errors are experienced. Administrator should verify that 10G DAC cable is used in one of the uplink XG cards ports (2,3,4), except port No.1. Because port No. 1, can't be used for...
For multi-mode optical modules, physical distance is very much related to cable type used in the scenario. 10GBASE-SR module and distance: As we see per table above, distance is related to cable type used. 300m distance can be achieved if OM3 fiber distance type cable is used 50/125...
To set the wavelength on a DWDM controller to a specific ITU channel or to define a specific frequency or wavelength to a DWDM controller, use the wavelength command in DWDM configuration mode. To return the wavelength to its default value, use the no form...
A. When interface is in shutdown mode (when the switch is starting up): [highlight color='#464646' background_color='#d5d5d5']B. Router # enable [/highlight] [highlight color='#464646' background_color='#d5d5d5']C. Router # configure terminal[/highlight] [highlight color='#464646' background_color='#d5d5d5']D. Router(config)# interface TenGigabitEthernet 4/0/0[/highlight] [highlight color='#464646' background_color='#d5d5d5']E. Router(config-if)#itu channel 28[/highlight] [highlight color='#464646' background_color='#d5d5d5']F. Router(config-if)#no shutdown[/highlight] [highlight color='#464646' background_color='#d5d5d5']G. Router#end[/highlight] B. When interface...
