ASX Limited has revealed the extent of the problems that shut down its ASX Trade platform last week for four hours and reportedly delayed its move to a new $32 million data centre in Gore Hill by three months.

The bourse operator said yesterday the network connectivity issues resulted from an upgrade implemented to improve the latency of the platform.

This led to a broadcast delay which not only disrupted brokers' transactions but also caused the failure of a "supporting component" of both primary and backup ASX Trade systems.

The component is used to authenticate a range of incoming transactions to verify that they have been submitted by authorised, logged-in users.

In addition, non-matching engine transactions were rejected with security validation errors until the system was recovered.

The ASX Trade system continued to run for the rest of the day from a back up site operated successfully from its disaster recovery centre and trading commenced the next day from the primary site with the system reverting to its previous operational configuration.

According to iTNews, the upgrade to the latency system has now been put on hold  by the ASX and the bourse operator has also advised software vendors and brokers that the planned move to the new Australian Liquidity Centre (ALC) in Gore Hill has now been delayed until February next year.

The exchange was due to move the ASX Trade system to the $32 million facility this weekend, with the systems at its Bondi Junction data centre set to be decommissioned on November 20.