Suppose external Router R1 has interface a connected with interface b of the site Router R2. And Router R1 using IP address 18.104.22.168/8 for a. Router R2 has 4 subnets 22.214.171.124/10, 126.96.36.199/10, 188.8.131.52/10, 184.108.40.206/10. My first question is router R1 with interface a and router R2 interface b has same ip address 220.127.116.11/8 or interface a using 18.104.22.168/8 and interface b using 22.214.171.124/10?
My second question is router R2's interface c has ip address 126.96.36.199/10?or any of the IP address of the block 188.8.131.52/10 for example 184.108.40.206/10?
My question is switch port interface N and host interface M could share same Mac address or switch has 3 different Mac address for it's interface N, P, Q?