North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical How can we provide enough IP address to MAN network
Hi nanog, When we build MAN (Metropolitan Area Network), we're basically enable the ip layer communication between millions of end system - taking into account the number of family, business building PCs,etc. Recall the scarcity of IPv4 address, I wonder how this huge ip address demand was met in US ? In my mind, we have the following choices: 1. Build the MAN into a private address network, a class A network 10.x.x.x will be sufficient for most metropolitan. But the cons is: need PAT/NAT to access public Internet, and that leads to the potential performance bottleneck. 2. Just wondering, can we use a distributed DHCP system? In this scenario, we can almost convert the address consuming MAN into a 10 to 1 (or 20 to 1) address pool, which achieve nearly the same address utilization efficiency of dialup address pool. Cons: don't know the scalability of DHCP, any comments? 3. Build the MAN into a IPv6 network, and use address conversion at the interconnection point between v4 and v6. Just an idea, feeling that conversion efficiency between v4-v6 should be better than NAT/PAT, any support comments? thanks ! Yu Ning -------------------------------------- (Mr.) Yu Ning, Chief Eng. Internet Network Product Dep. Data Com. Bureau, China Telecom Beijing, P.R.C. +86-10-62072357/54 --------------------------------------
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