Fiber Ring Service (FRS)

The Fiber Ring Service (FRS) is a CDT managed network service that is a component of the California Government Enterprise Network (CGEN). The FRS connects a Downtown Fiber Ring with both CDT Data Centers. CDT manages the network infrastructure supporting the FRS. This infrastructure includes optical transport and network equipment designed with diversity, fault tolerance and scalability. Access to the FRS is provided with redundant distribution routers and access equipment located at a Customer’s downtown facility. Customers are still responsible for their own local area network (LAN).

Fiber Ring Services Network Architecture

The FRS is not a service provided on the CALNET 2 Contract and requires customers to submit an exemption from CALNET. Interested customers can find information to request this service below under the Request tab including how to submit an exemption request. Also, the FRS is offered to CGEN customers as a secondary/redundant connection due to “Best Effort Emergency Maintenance”.

This offering is classified as a Current service.



  • 24 x 7 monitoring, service desk and operations center
  • Multi-protocol services, ethernet and fiber channel
  • 1 + 1 core and distribution redundancy at the physical, logical and network layer
  • Internet access


  • MPLS enabled
  • Point-to-point to Tenant Managed Services (TMS) and TMS Basic
  • Improved network security for departmental privacy


  • Two geographically separated exit points
  • Multi-rate customer connections to 10GB
  • Supports single or completely redundant customer connectivity
  • IBv4 and IPv6 enabled

The FRS is located downtown Sacramento and between CDT data centers in Rancho Cordova and Vacaville. It connects various office buildings occupied by State agencies. See the Specifications tab for details.


The FRS is a multi-service optical ring that is available to customers located in specific buildings in the downtown Sacramento area (listed below). It is a good option for customers requiring high-speed, high-availability connections between internal sites and/or external resources. The FRS operates as an MPLS-based virtual private network that enables secure communications through path isolation, encryption and traffic engineering.


Below is a list of those buildings located on the Downtown Fiber Loop:

  • State Capitol; 1 Capitol Mall
  • Jesse M Unruh Building; 915 Capitol Mall
  • Personnel Building; 801 Capitol Mall
  • Employment Development Building; 800 Capitol Mall
  • Natural Resources Building; 1416 9th Street
  • Office Building 8 (OB8); 714 P Street
  • Gregory Bateson Building; 1600 9th Street
  • Paul R Bonderson Building; 901 P Street
  • State Archives; 1227 O Street
  • Business, Transportation and Housing Building; 1120 N Street

The CDT use criterion for the FRS as a secondary/redundant connection indicates that customers should maintain another separate connection capable of handling the full capacity of the customer’s traffic. Should a customer have only the FRS for its single/primary connectivity, the customer acknowledges repair to the FRS can take anywhere from 72 to 120 hours. CDT brings this to the customer’s attention because the maintenance for the downtown fiber is a “Best Effort Emergency Maintenance” agreement through the CALNET 2 Contract.


The FRS infrastructure is located at State owned buildings and provides physical and electronic security to network equipment. Only CDT staff has administration permissions to the network equipment. Administrative access to the equipment is tracked and logged. CDT staff has been subject to Live Scan background checks. Traffic transported by the FRS can be physically separated, logically separated, and encrypted if needed.

For more information, see Security Services.

Maintenance Schedule

Maintenance is scheduled during standard CDT Preventive Maintenance windows that can be viewed at the link below.

Service CodeService DescriptionUnit of MeasurementRateNotes
N620CGEN Connection Bandwidth Change – Fiber Ring ServiceOne-Time/Change$350.00
N801Fiber Ring 10 Mbps Connectivity Per Connection $855.00
N802Fiber Ring 100 Mbps Connectivity Per Connection $1,380.00
N803Fiber Ring 200 Mbps Connectivity Per Connection $1,605.00
N804Fiber Ring 300 Mbps Connectivity Per Connection $1,830.00
N805Fiber Ring 500 Mbps Connectivity Per Connection $2,165.00
N806Fiber Ring 1 Gbps Connectivity Per Connection $2,545.00
N807Fiber Ring 5 Gbps Connectivity Per Connection $3,855.00
N808Fiber Ring 10 Gbps Connectivity Per Connection $5,355.00
N811Fiber Ring 10 Mbps Infrastructure Per Connection $108.00
N812Fiber Ring 100 Mbps Infrastructure Per Connection $378.00
N813Fiber Ring 200 Mbps Infrastructure Per Connection $378.00
N814Fiber Ring 300 Mbps Infrastructure Per Connection $378.00
N815Fiber Ring 500 Mbps Infrastructure Per Connection $487.00
N816Fiber Ring 1 Gbps Infrastructure Per Connection $487.00
N817Fiber Ring 5 Gbps Infrastructure Per Connection $541.00
N818Fiber Ring 10 Gbps Infrastructure Per Connection $595.00
Subscriptions to this service are available. Rates may also be referenced in the CDT Rate Schedule.

  1. Submit a Case/Request for Cost and Evaluation.
  2. Obtain an exemption via the CALNET exemption process.
  3. Submit a Case/Request  to implement FRS connectivity (must attach approved CALNET Exemption).
  4. Customer contacts their Account Lead regarding any questions.

How do I request connectivity to the FRS?

  • The customer can open a Service Request to CDT to initiate a site survey and service availability assessment at their site.

What speeds does the FRS support?

  • The FRS can virtually support any Ethernet or Fiber-channel speed with current rates for 10 MB, 100 MB, 200 MB, 300 MB, 500 MB, 1 Gbps , 5 Gbps and 10 Gbps.

Can my network connection be internal to my department?

  • Yes, the FRS is an MPLS-based network that offers virtual private network (VPN’s) to provide path isolation,

Can I use the FRS to access Tenant Managed Service (TMS), Applicaton Hosting or CGEN locations?

  • Yes, the FRS will provide access to all CDT services.

Is the FRS redundant?

  • Yes, the FRS was built with redundancy in mind. The FRS offers physical redundancy for all network equipment including power, geographically separated exit points to reach the data centers, and 24×7 monitoring and performance validation.

Does the FRS offer encryption?

  • Yes, the FRS supports encryption from the customer location in the FRS to any destination.

What type of equipment is required to access the FRS?

  • The type of equipment required is dictated by the circuit speed and topology requested. The CDT Case/Request process will include this analysis and provide detailed information.