2011/2/1 Joe <sj_h...@hotmail.com>: > > hi, > > we plan to implement DHCP server farm in our network. Currently , there > are there problems burning my head. could anybody
You're making this way, way too complicated. Run two DHCP servers. Allocate two different netblocks to each server. For Example, if your network is a /24, allocate a couple of /26's. Both will answer on a request. The client will ack to whatever address it decides to accept. Full redundancy. > To our experience, this needs to set up DHCP server on two sites and > syncronize their content in real time. > Beside this , we hope there should be as less modification as possible > on edge router when one DHCP server is down. > should anycast architecture helpful ? or should we just set up two > dhcp servers on two sites and sync. with ISC DHCPD? Don't even bother with the syncing, and anycast is the wrong protocol here. > 2. How to set up accouting and authentication with DHCP? That's the wrong place to do it. 802.1X is better here, or PPPOE/ACLs that need RADIUS auth to get past. > 3. Someone said PPPOE is not good for customer looking for long time online > , DHCP is an good option. But, to my understanding That's funny, because many major ISPs (like telcos) have done this for years. -j
