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Copyright © 2010, Juniper Networks, Inc.
Cost Efficiency
With PSDs, forwarding resources are allocated to where they are most needed. This
flexibility ensures that the most bandwidth-intensive services receive the resources
needed to guarantee service license agreements. By consolidating network equipment
and functions and streamlining management and administrative tasks, the utilization of
resources is maximized. Shared interfaces enable you to assign expensive forwarding
resources with more granularity to specific routing domains. RSDs and PSDs can run
different versions of Junos OS; howeve, the supported Junos OS Release version must
be one release up, or one release down, from the current Junos OS Release version. For
example, if RSD is running Junos OS Release 10.1, then PSD can run Junos Release 10.0
or 10.2; however, it cannot run Junos OS Release 9.6 or 10.3. To configure shared interfaces,
each RSD and PSD must be running Junos OS Release 9.3 or later.
Faster Deployment of New Services
Service providers can use a separate partition for testing and activating new services
without having to deploy a new system. Software upgrades can occur without affecting
software versions used for existing services. Carriers can begin generating revenue more
quickly and minimize the cost of introducing new services. RSDs and PSDs can run different
versions of Junos OS; however, the supported Junos OS Release version must be one
release up, or one release down, from the current Junos OS Release version. For example,
if RSD is running Junos OS Release 10.1, then PSD can run Junos OS Release 10.0 or 10.2;
however, it cannot run Junos OS Release 9.6 or 10.3. Each RSD and PSD must be running
Junos Release 9.4 or later.
Example: Configuring a JCS1200 Platform and a Single T Series Router on page 123
Example: Configuring a JCS1200 Platform and Multiple T Series Routers on page 128
Example: Configuring Shared Interfaces (Ethernet) on page 147
Example: Consolidating a Layer 2 VPN Network on page 177
Chapter 1: JCS1200 Chassis and T Series Routers as a Single Platform
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