In baby networks, area alone one IP subnet is getting managed, DHCP audience acquaint anon with DHCP servers. However, DHCP servers can aswell accommodate IP addresses for assorted subnets. In this case, a DHCP applicant that has not yet acquired an IP abode cannot acquaint anon with the DHCP server application IP routing, because it doesn't accept a routable IP address, nor does it apperceive the IP abode of a router. In adjustment to acquiesce DHCP audience on subnets not anon served by DHCP servers to acquaint with DHCP servers, DHCP advertisement agents can be installed on these subnets. The DHCP applicant broadcasts on the bounded link; the advertisement abettor receives the advertisement and transmits it to one or added DHCP servers application unicast. The advertisement abettor food its own IP abode in the GIADDR acreage of the DHCP packet. The DHCP server uses the GIADDR to actuate the subnet on which the advertisement abettor accustomed the broadcast, and allocates an IP abode on that subnet. When the DHCP server replies to the client, it sends the acknowledgment to the GIADDR address, afresh application unicast. The advertisement abettor again retransmits the acknowledgment on the bounded network.
No comments:
Post a Comment