CME GLink is a customer-managed connectivity solution providing access to the CME Globex platform along with access to CME Clearing production environments from within the CME Co-Location facility. Customers using GLink are required to license space at the CME Group Co-Location facility and the GLink connection must terminate in the Customer’s Licensed Space within the data center. GLink may not be terminated to a carrier or other transport offering.
- 10 Gbps hand-off
- Single-mode fiber
- 10GBase-LR long-wavelength/long haul
CME GLink connectivity provides access to:
- CME Globex Platform, which includes:
- CME Market Data Platform
- CME iLink® order routing interface
- CME Clearing House Systems
- All connections at the facility are single-mode fiber.
- A and B feeds are sourced from the same data center. In the event of a failure of both feeds, the B feed will be available from an alternate data center.
GLink Connectivity Procedures
Forconnectivity, customers must meet the following requirements:
At a minimum the customer must support Layer 3 protocols. It is recommended that the customer facilitate the termination of each GLink cross-connect in a redundant configuration.To preserve infrastructure integrity, CME Group will close the port for a device not conforming to protocol specifications.
- GLINK termination must be on customer equipment inside a CME Licensed Space
- Customers must be able to terminate 1310nm 10Gbps Ethernet (10G-LR) via a transceiver or fixed port in their equipment
- Customer equipment must support the following protocols: Ethernet, IP, BGP, and PIM Sparse Mode
- Customer IP packets must be sourced from the IP range assigned by CME Group
Best Practices/Recommendations (but not required):
- Do not use media converters
- Terminate the GLINK on a L3 switch
- Put IP address of point-to-point network provided by CME on interface terminating GLINK
- Customer routers must be capable of using advanced TCP/IP Protocols including BGP and multicast, specifically PIM Sparse Mode.
- BGP routing must be used on the routers terminating CME Group connections.
- It is recommended that customers use a routing protocol between their routers to provide automatic failover.
- All IP packets destined for CME Group must be sourced from CME Group-assigned private address space.
- Multicast PIM Sparse Mode must be used.
- Customers have the ability to advertise more specific routes on the GLink connections to allow for routing failover and fault tolerance.
The following restrictions apply to GLink connectivity:
- No site-to-site connectivity.
- CME Group will not accept traffic sourced from any customer’s public IP space.
- Only one Market Data Platform data feed per router is allowed.
- Customer hardware must be capable of supporting quote streams (e.g., PIM sparse mode).
- Customer equipment must be in CME Group-approved space
Establishing GLink Connectivity
Use the following procedure to establish connectivity:
- Customer licenses space at CME Group’s Co-Location facility.
- Customer orders GLink connection completing the required paperwork.
- CME Globex Services schedules a network connectivity test. Customer must have a knowledgeable contact on site during for the GLink turn up.
- Testing will be scheduled for a specific weekday after 4:30 pm Central Time.
- Upon successful test, CME Group notifies customer of completion and billing commences.