Active/Active DC design considerations - Without DNS

you have a lot of different options to achieve an active active design when your customers are targeting an ip address,

 

so you need to provide with some more information,

 

how will the you connect the two data centers?

 

are they going to be l2 or l3 connected? will they have shared segments ?

 

how do you advertise your external prefix to the internet ?

 

does the target ip address is currently a vip or a server?

 

 

when you are targeting an ip address you will use ltm, if you are planning some kind of l2 extention between the sites

 

you can just install a box at each site and configure it as active/passive, then you need to control the prefix advertisment

 

and for that you have lots of ways too (mostly done on the external routers)