Chinese state media say India's foreign minister told his Chinese counterpart Thursday that India would never tolerate anti-China activities in its territory.
China's official Xinhua news agency says Pranab Mukherjee also reaffirmed India's acceptance that the Tibet Autonomous Region is part of China's territory.
New Delhi has been taking a harder stance towards anti-China protests by Tibetan exiles as India tries to improve relations with China. The opposition Bharatiya Janata Dal (BJP) has accused the Indian government of adopting a craven (cowardly) attitude towards its neighbor.
Mukherjee was scheduled to meet today (Friday) with Chinese Premier Wen Jiabao, but an Indian newspaper (The Hindu) says Mukherjee will meet Chinese Vice-President Xi Jinping instead.
An Indian official (Foreign Secretary Shiv Shankar Menon) who attended Thursday's meeting says a dispute over the Himalayan state of Sikkim was discussed.
Xinhua says Mukherjee's Chinese counterpart, Yang Jiechi, said after their meeting Thursday that the two countries' relations are at an all-time high.
There was no immediate indication that the pair discussed other disputed areas along their shared Himalayan border, or recent reports of incursions by Chinese troops.
India and China have been working to define the border joining India and China's Tibet Autonomous Region. Border tensions led to war in 1962.
The "Times of India" reports that Mukherjee will travel to China's quake-hit Sichuan province today to receive a planeload of Indian relief supplies when it lands at Chengdu airport.
On Thursday, Mukherjee also presided over the opening of a new Indian consulate in the southern Chinese city of Guangzhou.