i have the network topology in the diagram below. i was given the Internal address block of 22.214.171.124 for assigning IP addresses.
Router 1 has a public ip address to the ISP
router 2 i assigned it the network 126.96.36.199/24 which allows enough space for the 204 hosts
router 3 i assigned it the network 188.8.131.52/26 which allows enough space for the 50 hosts
router 4 connected to r1 and frame relay.
router 6 i assigned it the 4 networks 184.108.40.206/26, 220.127.116.11/26, 18.104.22.168/64, 22.214.171.124/64 which allows enough space for the 4 * 44 hosts networks.
router 5 i assigned it the 6 networks 126.96.36.199/24, 188.8.131.52/24, 184.108.40.206/24 - 220.127.116.11/24 which allows enough space for the 6 * 210 hosts networks.
my question is what ip addresses should i assign the serial ports of r1 - r2, r1 - r3, r1 - r4, etc. should i use another network(18.104.22.168) or use up free addresses in lets say the 22.214.171.124 block like 126.96.36.199/30, 188.8.131.52/30, 184.108.40.206/30 ?
what is good practice in this situation as i will be summarize the addresses for smaller routing tables.
the routing protocol i will be using will be OSPF.
R1 will be implementing Nat.