Protected System Domains
A Protected System Domain (PSD) is a redundant Routing Engine pair (or single Routing Engine) on the JCS 1200 platform matched with one or more Flexible PIC Concentrators (FPCs) on a T-series routing platform. In Figure 1, FPC1 and FPC2 and the Routing Engines in slots 1 and 2 belong to PSD1. In contrast, PSD2 is made up of the FPCs in slots 3 and 4 on the T-series routing platform and the Routing Engines in slots 3 and 4 on the JCS 1200 chassis.
Figure 1: Protected System Domain
Any number of FPCs can be assigned to a PSD. Only one redundant Routing Engine pair (or single Routing Engine) can be assigned to a PSD.
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Note: When an FPC is not assigned to a PSD, it belongs to the Root System Domain (RSD) by default. A Physical Interface Card (PIC) on an FPC owned by the RSD can be configured as an interface that is shared by multiple PSDs. For more information, see Shared Interfaces Overview. |
You create each PSD under the RSD configuration through the JUNOS software running on the Routing Engines on the T-series routing platform. Once a PSD is configured, you access it as you would any separate physical router by connecting to the console port on the master Routing Engine on the JCS 1200 chassis for the PSD you want to configure. Using the JUNOS software, configure basis system properties, such as hostname, domain name, Ethernet management IP address, and so on. You can also download a configuration file to the PSD.
A PSD detects and manages only its own Routing Engines in the JCS 1200 and the assigned FPCs and PICs in the T-series router. In addition, failures on one PSD do not affect other PSDs.