Reply
Highlighted
Accepted Solution

Rookie questions about DHCP

smashytech
Techie
Posts: 4
2437     0

Hi,

 

Ive been using infoblox as an administrator for some time now. But I havn't really got more indepth more than managing defined scopes.

However now we've installed a new grid-member that should  take over all DHCP functions.

So, i was under the impression that if i add a new server and assign DHCP function on this, it would automaticly sync with the old one, making the scopes available on 2 members. However this didn't happen and I'm wondering if im misinformed, or if I've configured something wrong?

 

The other options ive seen is possibly to export the database in a .csv file and import it on the newer one. How have you guys done this before?

 

As a rookie within these topics, could I get an recommendation for either a webseriers or a good beginners guide? Smiley Happy

 

Regards,

Re: Rookie questions about DHCP

Expert
Posts: 81
2438     0

Hello, smashytech
You seem to have an architecture issue rather than a DHCP configuration problem.

 

The configuration you're trying to reach (high available DHCP service) is achievable by using:

2 Members in a HA Pair
2 Members in a DHCP Failover Association

 

In the first case, if you create an HA Pair using two appliances, you can assign a range to this HA Pair and the IP lease will be made by the active node of this HA pair. If the active node fails for some reason, the passive pair will automatically be placed online (as active) will little or no impact to your dhcp clients.

 

From the other hand, if you use DHCP Failover association, you will have a highly available, "active-active" DHCP infrasctructure, with two appliances servicing IP addresses (and sharing the same DHCP range, with mechanisms to control the leasing of IP addresses in case of failure).

 

Please note that you do not need to have two different appliances (two different and separate Infoblox Grids) to "share a DHCP range". You really do not need to use backup files restored in other appliances to do this and this configuration will lead you to several issues as duplicated IP address, lack of control on your IPAM, will make everything harder to manage and you will lose all benefits that Infoblox Grid can deliver. I highly suggest you to take a look at these two mechanisms and how do you configure DHCP using then. NIOS documentation (admin guide) has several architecture examples that you can use as reference.

 

I also recommend you to take a time to understand how grid services work (database replication, configuration inheritance, etc). This information are also available in NIOS Admin Guide.

 

At training area have some on-demand classes with the basic you need to now before get in depth on Infoblox. Take a look: https://www.infoblox.com/support/training/infoblox-fundamentals/

 

Hope this helps!

Paulo

 

Re: Rookie questions about DHCP

smashytech
Techie
Posts: 4
2438     0

thanks @PCosta, that pretty much cleared it up for me. Ill also take a look at the trainingcentre!

Cheers!

Re: Rookie questions about DHCP

nige316
Techie
Posts: 1
2438     0

Hi PCosta,

 

So is it possible to have both 2 Members in a HA Pair and 2 Members in a DHCP Failover Association, therefore 4 available DHCP servers?

DHCP failover association currently stuck in Recover state.

 

Thanks

Re: Rookie questions about DHCP

TTiscareno Community Manager
Community Manager
Posts: 244
2438     0

@nige316 wrote:

Hi PCosta,

 

So is it possible to have both 2 Members in a HA Pair and 2 Members in a DHCP Failover Association, therefore 4 available DHCP servers?

DHCP failover association currently stuck in Recover state.

 

Thanks


To help make sure that you get the visibility that you deserve, please be sure to start a new thread for an issue you might be seeing. This is because frequently, no two problems are identical, and we don't want your post to get buried and overlooked in an older thread.

 

A DHCP Failover Association will have two servers, and these two servers can be deployed in an HA pair for extra redundancy. With regards to your DHCP Failover status, there are many reasons why you might be seeing that. The best way to solve that will be to open a case with Infoblox Support and they can help troubleshoot that for you.


Regards,

Tony

Showing results for 
Search instead for 
Do you mean 

Recommended for You