Limitations/Configurations
The following table defines the configuration for network and gap request limitations. These limitations are session based. Cboe reserves the right to adjust the gap request limitations to improve the effectiveness of the gap request infrastructure.
| Period/Type | Limit/Setting | Notes |
|---|---|---|
| MTU | 1500 | Cboe will send UDP messages up to 1500 bytes. Participants should ensure that their infrastructure is configured accordingly. |
| Gig-Shaped Throttle | 2 Gb/s | The real-time and gap multicast head ends are configured to shape their output to this level to minimize packet loss. |
| Gap Response Delay | 2 ms | The Gap Server will delay resending sequenced messages via multicast for the specified limit in order to satisfy multiple GRP gap requests with one multicast response. |
| Count | 100 | Any single gap request may not be for more than this number of dropped messages. |
| 1 Second | 320 Requests | This is the maximum number of retransmission requests allowed per second for each session. This is renewed every clock second. |
| 1 Minute | 1,500 Requests | This is the maximum number of retransmission requests allowed per minute for each session. This is renewed every clock minute. |
| Day | 100,000 Requests | This is the maximum number of retransmission requests allowed per day for each session. |
| Within Range | 1,000,000 Messages | Users’ retransmission requests must be within this many messages of the most recent sequence sent by the real-time feed per session. |