Protected System Domains

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.
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.
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.
Protected System Domains ■ 1

Related Topics ■ Root System Domains
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Shared Interfaces
Connections Between JCS 1200 and T-series Chassis
Benefits of JCS 1200 and T-series as a Single Platform
2 ■ Protected System Domains