If it escalate to war, It will create a havoc on India's chickens neck.
Chicken's neck (Shiliguri Corridor) has vital rail, road, water and power etc. links for India, cutting those off will isolate seven sister states.
on the contrary, targets on Chinese side that can cause pain are far away from India's border.
India will have to go for a naval blockade with china in case of an attack on chicken's neck.
Chinese submarines operating in Indian Ocean and Bay of Bengal will be the biggest threat for such a blockade.
Maoist groups operating inside India will be another threat, these groups can go for different sabotage targeting Indian economy.