Supported Platforms
Benefits of JCS1200 and T Series as a Single Platform
The benefits of the JCS1200 and T Series routers as a single platform are:
- Increased efficiency and investment protection—A single T Series router used with the JCS1200 platform supports up to eight Protected System Domains (PSDs). With multiple (up to 3) T Series chassis connected to the JCS1200 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 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.
The following sections discuss some of these benefits:
Network Consolidation
Many carriers operate separate IP networks for public and private services. Others have application-specific IP networks (voice and video, for example). PSDs enable carriers to consolidate and simplify network architecture. Rather than adding more routing at the edge to support individual services, a single platform provides service-specific virtualization in the core of the network.
In Figure 1, three separate networks (IPTV, enterprise VPN, and public IP) are consolidated into one network. Instead of three core routers, only the JCS 1200 platform interconnected with a single T640 router is required to support all three services.
Figure 1: Network Consolidation
Enhanced Security and Administration
By delineating fault and administrative domains on a single system, PSDs enable network administrators to decrease the number of nodes and fiber interconnections between routers, reducing the cost and complexity of existing point of presence (POP) architectures. Because each PSD maintains its own routing and processes in separate partitions, security is enhanced. With fault isolation, network anomalies in one PSD do not affect another PSD. Streamlined boundaries allow operational domains to be isolated logically, providing more control over router administration.
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; 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 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.
