Establishment Acknowledgment

39001

UUID

uInt64

8

Y

Matches Establish.UUID.

39002

RequestTimestamp

uInt64

8

Y

Matches Establish.RequestTimestamp.

39013

NextSeqNo

uInt32

4

Y

Next expected message sequence number.

On primary connection, the expected message sequence number of the next business message from CME to customer.

• At the beginning of the week this should be set to 1

• Should be set to last known message sequence number + 1 for Establish message sent midweek using same UUID as previous Establish message

• Should be set to 1 for Establish message sent midweek using different UUID from previous Establish message

On backup connection, this will be set to 0.

39021

PreviousSeqNo

uInt32

4

Y

Reflects the sequence number of the last business message published by CME with the PreviousUUID.

If no business message was published, this will be zero.

39015

PreviousUUID

uInt64

8

Y

Refers to the UUID sent in the previous message before this message from CME.

• This can be the CME assigned default UUID=0 for messages published by CME before first Negotiation of customer at the beginning of the week

• This can be the last UUID as used by the customer from the previously Established session

• If no business message has been published by CME, this will also be set to 0

39014

KeepAliveInterval

uInt16

2

Y

The longest time in milliseconds that CME will wait before sending a keep alive Sequence message.

CME Globex will echo back the keep-alive interval submitted in the customer Establish message.

39022

SecretKeySecureIDExpiration

uInt16NULL

2

N

Indicates the expiration date of the HMAC secret key.  Sent in number of days since Unix epoch.

39010

FaultToleranceIndicator

FTI

1

Y

0 – Backup

1 – Primary

Indicates whether the connection is the primary or backup.

9553

SplitMsg

SplitMsg

1

N

0=Split Msg Delayed

1=Out of Order Msg Delayed

2=Complete Msg Delayed

Indicates if a message was delayed as a result of:

• being split among multiple packets (0)

• TCP re-transmission (1)

• due to a previously submitted split or out of order message (2).

If absent then the message was not delayed, split, or received out of order.