/31 bit Point to Point ip address configuration .
Can we assign /31 address on the point to point link & save 50 % of ip address? Answer is yes. R2(config)#int fa0/0 R2(config-if)#ip address 192.168.1.0 255.255.255.254 % Warning: use /31 mask on non point-to-point interface cautiously R4(config)#int fa0/0 R4(config-if)#ip address 192.168.1.1 255.255.255.254 % Warning: use /31 mask on non point-to-point interface cautiously Let’s try to ping :) R4#ping 192.168.1.0 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.0, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms Ok do we need privilege mode to ping ? no . R4> ping 192.168.1.0 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.0, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms Let’s check the ip route: R4#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP...