According to the ibdn standard, it is generally recommended that the communication room in each building be 12 cores. The building room should use 24 cores for consideration. First, we should know the number of cabling points on this layer and calculate the number of switches, whether or not to stack the connections between switches. If the core switch is dual-host Hot Standby redundancy, 6 cores will be enough (2 cores and 2 cores for each core ). If you do not need to stack a vswitch with 4 cores, You can multiply the number of vswitches by 4 and 4 cores. --------------------------------------- Experience and practice: Set up an optical fiber in each floor wiring room (horizontal wiring Cabinet.
Generally six cores: two cores, two cores for backup, two cores for redundancy, and eight-core optical fiber. ------------------------------------------- Redundancy: if there are more than the used ones, the extra ones are called redundancy;
Master/Slave: one for use, and the other for backup;
Hot Backup: both in working status
Cold backup: the backup device is in the standby status ------------------------------------------- the minimum specification configuration is 2 cores at 48 o'clock. of course, four messages can be selected for 48 points, because 2 cores are the smallest unit of optical fiber cables, it is more appropriate to leave 2 cores as the backup points.
150/(48/2) = 6-core it chooses 12-core is 6-core all have backup points, that is 6*2 = 12-core. the secondary score can be selected by person, so the number of Optical Fiber cores selected varies significantly. standard selection only ensures a minimum selection and a backup core should be the type you need.
