What is a core node?
At a glance
A main node on the FTN/FTNx network where transmission rings meet. FTNx core nodes house the DWDM equipment.
Why: Core nodes carry the backbone, so they need diverse cable entries and resilient routing.
Where: At key sites on the network, with diverse cabling. Inserting a new one into an existing cable has its own rules.
Where the rules are
- NR/L2/TEL/30160 cl 5.2what an FTN core node is
- NR/L2/TEL/30160 cl 5.4FTNx core nodes and DWDM
- NR/L2/TEL/30160 cl 6.5siting core nodes and diverse cabling
- NR/L2/TEL/30160 cl 7.4cabling at core nodes
- NR/L2/TEL/30160 cl 7.7.3inserting a new core node
- NR/L2/TEL/30160 cl 8.4terminations at core nodes
On the drawing
Shown on the SLD; terminations follow the fibre allocation schedule.
- NR/L2/TEL/30160 cl 9fibre allocation
Also called: FTN core node, FTNx core node
Guidance in our words. Read the current issue of each standard before you design to it.