[igraph] : edges and clusters

[patricia]

Hello

I would like to ask two questions:

1) What function igraph library should I use to determine the connected components of a graph?

2) How can I do to calculate the links (edges) between clusters. For example, I have a V1 belonging to cluster 1 connected to the V30 that is in cluster 2, the same happens with many vertices. How can I account for these edges?

Thank you