He described ASEAN as a symbol of peace and prosperity.
India and the Philippines on Monday inked four pacts providing for cooperation in a number of areas, including the defence and security, after Prime Minister Narendra Modi held wide-ranging talks with President Rodrigo Duterte, covering an entire gamut of bilateral relationship.
On Sunday, India, Australia, Japan and the U.S. held their first meeting to give shape to the much talked about quadrilateral alliance to keep the Indo-Pacific region "free and open".
To effectively fight the threat of terrorism and violent extremism, the United States and 10 Southeast Asian countries have agreed to bolster cooperation in information sharing, law enforcement, and border security.
The issue of China's aggressive posturing figured prominently during the ASEAN summit also.
India has been supporting freedom of navigation and access to resources in the SCS in accordance with principles of worldwide law, including the 1982 UN Convention on the Law of the Sea.
Prime Minister Narendra Modi said ASEAN began in times of a great global divide, but today, it is shining as a beacon of hope.
"At the 15th India-ASEAN Summit, the prime minister and ASEAN Leaders will review the commemorative activities undertaken in 2017 to mark the 25 years of India's dialogue partnership with ASEAN, as well as review the broad spectrum of India-ASEAN cooperation in all its aspects", the ministry said.
The ties between India and ASEAN have been on an upswing.
Investment from ASEAN to India has been over $70 billion in the last 17 years accounting for more than 17% of India's total FDI.
Apart from the 10 ASEAN Member states, East Asia Summit includes India, China, Japan, Republic of Korea, Australia, New Zealand, United States and Russian Federation.
Echoing Premier Li, President Duterte urged the APT leaders "to continue nurturing peaceful coexistence, particularly within the APT, where we consider ourselves as one and a family".