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JCS 1200 Platform Overview
The Juniper
Control System (JCS) 1200 chassis interconnected with up to three
T-series routing chassis enables the control plane (route processing)
and forwarding plane (packet forwarding) to be scaled independently
within a single platform. The JCS 1200 chassis houses up to six redundant
Routing Engine pairs or up to 12 single Routing Engines running JUNOS
software. Matched with one or more Flexible PIC Concentrators (FPCs)
on a T-series routing platform, the selected Routing Engine pair (or
single Routing Engine) forms a secure, virtual hardware router, or
Protected System Domain (PSD). A PSD has the same capabilities as
a separate, physical router with its own control plane, routing tables,
interfaces, and secure access. Up to three T-series routing platforms
can be connected to the JCS chassis. By physically separating the
control plane from the forwarding plane, you can achieve the following
results:
- Increased efficiency and investment protection—A
single T-series routing platform used with the JCS 1200 platform supports
up to eight PSDs. With multiple (up to 3) T-series chassis connected
to the JCS 1200 chassis, 12 PSDs can be supported. Instead of purchasing
12 physical routers, a service provider can configure 12 PSDs using
a single interconnected platform. In addition, operations and administration
are simplified through consolidation of resources.
- Maximum scaling and flexibility—A highly scalable
control plane chassis preserves slots in the router chassis that can
be used for revenue-generating, high-speed forwarding of Internet
traffic. Service providers can assign control processors and memory
space on the Routing Engines in the JCS chassis to achieve the most
efficient use of resources, while delivering outstanding performance.
In addition, different PSDs can share interfaces on a single Physical
Interface Card (PIC), reducing capital expenditure and enabling you to allocate resources with finer granularity.
- Rapid service rollout—New services can be planned,
tested, and deployed more quickly with fewer resources. Each PSD provides
a secure administration domain, where new features can be tested,
while other PSDs continue to provide tested software to customers.
Through fault isolation and streamlined administration domains, service
providers achieve faster revenue and accommodate rapid customer growth.
In addition, RSDs and PSDs can run different version of JUNOS software.
Each RSD and PSD must be running JUNOS Release 9.2 or later.
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