Cloud SWG: Infrastructure Upgrade Announcement in China Beijing (ACNBJ) and Shanghai (ACNSH) on June 26 and July 10, 2026

Broadcom will perform an infrastructure upgrade to the Cloud SWG Service in the China datacenters (ACNSH and ACNBJ) in June and July 2026. In preparation for the upgrade, customers using IPSec as a connection method to these datacenters must make sure NAT Traversal (NAT-T) is enabled in their firewall's IPSec configuration and that any egress firewalls rules allow UDP port 4500. Failure to update the firewall’s IPSec configuration will result in a permanent outage.

Timing

Each datacenter will be completely unavailable for a duration of 8 hours during these below maintenance events.

• Beijing (ACNBJ): June 26, 2026, from 12:00 UTC to 20:00 UTC
• Shanghai (ACNSH): July 10, 2026, from 12:00 UTC to 20:00 UTC

Required Action

Prior to the maintenance, make sure your firewall’s configuration fulfills the requirements described above.

Impact

• IPsec: The configuration for secondary tunnels should be in place, allowing for failover to happen when the primary location is under maintenance.
• WSS Agent, Symantec Enterprise Agent: Agent traffic will be automatically redirected to the closest Cloud SWG datacenter. No customer action is required.
• Explicit proxy and proxy forwarding: Customers directing traffic to proxy.wss.broadcom.cn will be automatically redirected to the closest Cloud SWG datacenter. No customer action is required.
• Regardless of connection method, any configuration pointing to a specific datacenter hostname or IP address (not recommended) must be manually switched to another Cloud SWG location prior to the decommissioning date to avoid an outage.

Technical Support

Experiencing issues? Contact technical support by visiting: Here

For service status and maintenance updates visit and subscribe to Broadcom Service Status: Here