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NOTICE DATE:  January 18, 2019

NOTICE TYPE:  M-A011119-02 Outage Retail/Wholesale

SHORT DESCRIPTION:  Reminder - Planned Maintenance Outage

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED:  Sunday, January 20, 2019 from 06:00 to 21:00

LONG DESCRIPTION:  ERCOT will be performing planned maintenance on January 20, 2019, from 06:00 to 21:00.  During the outage the following functions will be affected:

*       Market Participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT during the outage. This includes all retail transactions.
*       867 transactions will NOT be forwarded during the outage.
*       997 Functional Acknowledgements will NOT be sent during the outage.
*       MarkeTrak will be unavailable for the duration of the outage.

*       Retail Application components of the MIS and the Retail API will be unavailable

*       Retail Reports and Extracts may be impacted during the outage timeframe
*       eService application will be unavailable on the Market Information System (MIS)

*       Find ESIID and Find Transaction will be unavailable



ACTION REQUIRED:  During the outage ERCOT will change the public IP addresses of some market facing services.  This change could impact market participants' ability to access those services, or receive responses from them.

NOTE: All Market Participants that transmit files via NAESB must ensure their systems can send and receive transactions from the new IP addresses.



The specific changes to the services are listed below:



NAESB URL

https://naesb.ercot.com:7403/ipnet/naesb - no change



IP Configurations

Former Public IP Addresses

Outbound from ERCOT - 66.128.17.86

Inbound to ERCOT (naesb.ercot.com) - 66.128.17.102

Port (no change) - 7403

New Public IP Addresses

Outbound from ERCOT - 66.128.16.125

Inbound to ERCOT (naesb.ercot.com) - 66.128.16.102

Port (no change) - 7403

ADDITIONAL INFORMATION:  Please review the ERCOT website for previous Market Notices<http://www.ercot.com/services/comm/mkt_notices/archives/search?nc=all&per=&pg=&q=M-A011119&sort=> related to this subject

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>.

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.











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