besides the vxrlink command mentioned, you may also use vradmin commands, like
vradmin printrvg
vradmin repstatus
please refer to vramin command manpage for the details of the command syntax
Yes, this is possible and very easy to do. Just follow examples in the VCS admin and agent guides.
the link below is about setting up a NIC and some other agents
https://www.veritas.com/support/en_US/article.100025018
Good luck.