NOTICE DATE: May 10, 2023
NOTICE TYPE: R-A042823-02 Outage Retail/Wholesale
SHORT DESCRIPTION: Planned Maintenance Outage - Retail
INTENDED AUDIENCE: All Market Participants
DAY AFFECTED: Sunday, May 21, 2023 from 06:00 to 23:59
LONG DESCRIPTION: ERCOT will be performing planned maintenance on Sunday, May 21, 2023 from 06:00 to 23:59. During the outage, the following functions will be affected:
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.
IMPORTANT: New Imperva IP addresses
New IPv4 address space is being added to support our growing network footprint. The new address range is 131.125.128.0/17 (131.125.128.1-131.125.255.254.) These new addresses may be deployed in an Imperva PoP beginning May 19th, 2023.
What does this mean for you? If you use an allowlist, firewall, or ACL to limit direct access to your origin server, you must update your allowlist to permit the new 131.125.128.0 /17 before May 19th. If you don't permit the new IPs, you may experience a site outage after that date, as any Imperva devices using the new IP space will be unable to access your server. For more information, please visit https://docs.imperva.com/howto/c85245b7
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].
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