if your router are directly connected, you should use the same network address 192.168.30.x for exemple.and you can not use 192.168.30.0 ip address, it's the network address. you should use a number between 1 and 254.regards and good luck

the group identifiers is used only to autentify multi hsrp group on same vlan. MSFC use the same Mac address on all vlan, if you don't brige between your vlan you could not be a problem.regards