We have 2 x cisco 6500 switches running as a core switches, recently one of the core failed and the other took over.. but this was not the issue.
The issue is we have a single DHCP server which was connected to the core which failed and hence there was an outage for all the end users, we don't have teaming configured on the DHCP server.
We are planning to add another DHCP server and connect it to the other core switch and add two IP helper-addresse under each SVI interfaces. This way we are not sure whether the client request would be sent to both the DHCP servers at the same? Ofcourse we don't want this...
If it works sequentially i.e, if the first DHCP is unavailable then it does go to the second.. this is fine but we are not sure whether it works in such a way.
Pls do forward any document or comments on this.
Appreciate your feedback.
Thanks & Regards,