Root System Domains

The Root System Domain (RSD) is the Junos OS running on a pair of redundant Routing Engines on a T Series router connected to the switch fabric on the JCS1200 platform. The configuration on these Routing Engines provides:

• The RSD identifier
• The parameters used to create Protected System Domains (PSDs) under the RSD, namely:
  • Which Routing Engine or redundant Routing Engine pair on the JCS1200 platform is assigned to the PSD.
  • Which Flexible PIC Concentrator (FPC) or FPCs on the T Series router are assigned to the PSD.

Because you can connect up to three T Series routers to the JCS1200 chassis, you can configure up to three RSDs. The PSD identifiers must be unique for each RSD. That is, PSD1 can only belong to RSD1, and not to RSD2 or RSD3.