A table that contains operational characteristics of the
virtual routers (XRRP instances) configured on this routing
device. Currently on a given router for a given VLAN up to
2 instances can be supported (i.e. router can be the owner
of one XRRP instance and backup up to one other). The
theoretical maximum of XRRP instances on the router can
be MAX_VLAN*2, currently it is limited to 512.