The second phase of the mega exercise is scheduled to be held from November 17 to 20 in the Arabian sea.
India's decision to heed to Australia's request to be part of the mega naval drill comes in the midst of growing strain in ties with China over the border row in eastern Ladakh.
The exercise is taking place at a time India and China are locked in a nearly six-month-long bitter border standoff in eastern Ladakh that has significantly strained their ties.