02-dhc-dns zone suffix option draft----Page:5
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When using in access network (cont.) Usage CPE will work as a DHCP client to request the prefix from aggregation device, and as a DHCP server to configure an IP address and FQDN to each terminal. Terminal or CPE performs DNS update. Disadvantages DNS zone suffix should be manually configured in the CPE; Doing DNS update from user side may conflict with the intension of FQDN option. Aggregation device CPE Terminal Terminal ISP core network ISP network User network IP prefix delegation Using DHCP DHCP server Terminal FQDN Using FQDN option – method 1 |