Hazard Summary
Type: Network Hazard
Date: Friday 21 March 2014, 1100-1300
Duration: 2 hours
Purpose: Network configuration change within the NCI Data Centre
Affected: External and internal network connectivity to NCI services
Dear NCI Users,
ANU Networks and Communications engineers have recommended a configuration change within the Ethernet-based networking fabric used at NCI. This fabric is used by all NCI services that provide world accessible services i.e. ssh sessions, web services, cloud services and data transfer operations.
The configuration change to the spanning-tree algorithm, used by the NCI's distribution/edge switches, is expected to improve our networks' resiliency.
There will be a hazard period when TCP/IP traffic may be affected while this change is applied. This may result in a 5 – 10 minute network outage where services will not be contactable.
An additional update will be provided to confirm the outcome of the operation.
Best regards,
NCI Storage and Infrastructure
