Feed Connectivity Requirements

• Gig Shaped feeds are available to members with a minimum of 1 Gb/s of connectivity to Cboe via cross connect or dedicated circuit.
• 5-Gig and 8-Gig Shaped Options feeds are available to members with a minimum of 10 Gb/s of connectivity to Cboe via cross connect or dedicated circuit.
• WAN-Shaped feeds are available to members who meet the minimum bandwidth requirements to Cboe via cross-connect, dedicated circuit, or a supported carrier.

Members with sufficient connectivity may choose to take both the A/B and C/D feeds from one of Cboe data centers and arbitrate the feeds to recover lost data. Alternatively, members may choose to arbitrate feeds from both data centers. It should be noted that feeds from the secondary data center will have additional latency for those co-located with Cboe in the primary data center due to proximity and business continuity processing.

Cboe Multicast PITCH real-time events are delivered using a published range of multicast addresses divided by symbol range units. Dropped messages can be requested using a TCP/IP connection to one of Cboe’s Gap Request Proxy (GRP) servers with replayed messages being delivered on a separate set of multicast ranges reserved for packet retransmission. Intraday, a spin of all open orders may be requested from a Spin Server. This allows a client to become current without requesting a gap for all messages up to that point in the day.The following diagram is a logical representation Multicast PITCH feed message flow between Cboe and a member feed handler that is listening to the A and C instances of two units: