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Frequent Contributor II
Posts: 169
Registered: ‎11-18-2011

DHCP from RAP local server not controller

Hello everyone -

 

Leave it to me to have another odd question :)

 

So we have the controller located in one office (site1), with mpls connections to 2 other offices (site2 and site3) (10mb connection). Each of the offices at the end of the mpls connection has a local DHCP server on their network. The main location has 2 dhcp servers.

 

So here's what we see, when a person connects to the RAP at site 2, the ip address of the computer comes from the dhcp server at site1, we are seeing some issues with routing on this and would rather have the dhcp servers at site2 and site3 hand out ip addresses to all wireless clients at those locations.

 

So is this even possible? (hopefully this makes sense...)

 

Lirria

 

Guru Elite
Posts: 21,280
Registered: ‎03-29-2007

Re: DHCP from RAP local server not controller

Change the forwarding mode of that Virtual AP at those locations to "Bridged" instead of "tunneled"

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Frequent Contributor II
Posts: 169
Registered: ‎11-18-2011

Re: DHCP from RAP local server not controller

How will that effect local traffice - will all local traffic still be sent thru the RAP's local internet connection not the connection at site1?

 

Currently all remote aps are set to split-tunnel.

 

 

Lirria

Guru Elite
Posts: 21,280
Registered: ‎03-29-2007

Re: DHCP from RAP local server not controller

Local traffic will be bridged to the local network (the sub net of the rap). It will follow the traffic patterns of whatever you are doing locally in that sub net.


Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Frequent Contributor II
Posts: 169
Registered: ‎11-18-2011

Re: DHCP from RAP local server not controller

So instead of splittunnel I really want bridged?

 

I just don't want to make a massivie change that adversly impacts the 7 remote aps that we are currently running.

 

And (just because I'm very confused at the moment) how will this impact the RAP5's and RAP2's that are deployed? Will the clients there actually pull an ip from their local systems too?

 

Don't get me wrong - this sounds like exactly what I'm needing - just want to be sure before changing it.

 

 

Lirria

Guru Elite
Posts: 21,280
Registered: ‎03-29-2007

Re: DHCP from RAP local server not controller

If all those raps are on your private wan, you cab make the change. If not you need to create an ap group for aps that are on your private wan and change the forwarding mode of that virtual ap to bridged.a


Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Frequent Contributor II
Posts: 169
Registered: ‎11-18-2011

Re: DHCP from RAP local server not controller

So it sounds like I need 2 different virtual ap configurations.

 

1 for the ones on the MPLS (direct connect to our offices)

 

and then 1 for the RAP's which just come in  over their local isp.

 

I'll create a new Virtual ap group and put the ones on the MPLS on it and see what happens.

 

Keep your fingers crossed :)

 

Lirria

Guru Elite
Posts: 21,280
Registered: ‎03-29-2007

Re: DHCP from RAP local server not controller

You will also need to make sure the default dot1x role In the new AAA profile for that virtual ap allows all traffic, and does not have split rules.


Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Frequent Contributor II
Posts: 169
Registered: ‎11-18-2011

Re: DHCP from RAP local server not controller

Well that did go so well - I must have some errors someplace - couldn't even pull an ip from the local network, traffic not flowing at all - *sigh* I"ll recheck tomorrow - must of missed something in the config.

 

Lirria

Guru Elite
Posts: 21,280
Registered: ‎03-29-2007

Re: DHCP from RAP local server not controller

When you change the Virtual AP to bridged, change the VLAN to 1, as well.

 

Why?  In the Ap-group, there is an ap system profile which contains the Native VLAN parameter, which dedides if traffic that is bridged will be tagged (if the VAP vlan doesn't match this Native VLAN parameter), or just passed through (if the Virtual AP vlan does match -- by default it is one).  If it is anything besides one, it will tag the traffic, and it will not work.

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

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