ArubaOS and Controllers

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New Contributor
Posts: 3
Registered: ‎12-04-2009

DHCP and client-identifier

Guys,

using two controllers running 3.4.0.5, I'd like to see the client computers' dhcp-client-identifiers. I already tried setting the syslog's DHCP option to debug - but saw no names.

Any ideas?

Thanks,
Peter
Guru Elite
Posts: 21,504
Registered: ‎03-29-2007

Client Identifier


Guys,

using two controllers running 3.4.0.5, I'd like to see the client computers' dhcp-client-identifiers. I already tried setting the syslog's DHCP option to debug - but saw no names.

Any ideas?

Thanks,
Peter




Did you do a packet capture to see if it is in there?


Colin Joseph
Aruba Customer Engineering

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

New Contributor
Posts: 3
Registered: ‎12-04-2009

Re: DHCP and client-identifier




Haven't tried yet, shall I? I watched the syslog output for quite a while, observed a lot of boxes requesting IPs - but never saw any names...

Guru Elite
Posts: 21,504
Registered: ‎03-29-2007

Logs and Names

The logs on Aruba would only show things like the DHCP Discover, Offer, NAK, etc. It would not show the contents of the client-id, only the mac address and the IP address of that client. Any additional options would be seen in either some sort of packet capture or on the DHCP server if it logs that option.


Colin Joseph
Aruba Customer Engineering

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

New Contributor
Posts: 3
Registered: ‎12-04-2009

Re: DHCP and client-identifier




So, since we're using the internal DHCP server, this is a clear fail. Thanks for making things clear.

Peter

Guru Elite
Posts: 21,504
Registered: ‎03-29-2007

DHCP Information

The question is what information specifically are you looking for in the DHCP server and how do you want to use it. The internal DHCP server on the Aruba controller is only recommended for use for guests and not enterprise use. The preferred route is to use an external full-featured DHCP server, which would have the options people want like dynamic DNS registration, etc. You can get information about what clients have received DHCP by using the "show ip dhcp binding" command:

(Aruba3600) #show ip dhcp binding 

lease 1.1.1.254 {
starts Mon Dec 07 14:46:33 2009;
ends Tue Dec 08 14:46:33 2009;
tstp Tue Dec 08 14:46:33 2009;
binding state active;
next binding state free;
hardware ethernet 00:1a:1e:c0:24:0a;
uid "\001\000\032\036\300$\012";
}
lease 1.1.1.253 {
starts Mon Dec 07 15:18:34 2009;
ends Tue Dec 08 15:18:34 2009;
tstp Tue Dec 08 15:18:34 2009;
binding state active;
next binding state free;
hardware ethernet 00:0b:86:c5:4c:c8;
uid "\001\000\013\206\305L\310";
}



Colin Joseph
Aruba Customer Engineering

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

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