$ns node-config -addressType hierarchical
AddrParams set domain_num_ 2 ;# domain number
lappend cluster_num 1 1 ;# cluster number for each domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel $num_wired_nodes [expr $num_mobile_nodes + $num_bs_nodes];
AddrParams set nodes_num_ $eilastlevel
不知道是否有人了解这几行的意思，能帮忙解释一下